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Vegetarianism is the practice of abstaining from the
consumption Consumption may refer to: * Eating *Resource consumption *Tuberculosis, an infectious disease, historically known as consumption * Consumer (food chain), receipt of energy by consuming other organisms * Consumption (economics), the purchasing of n ...
of
meat Meat is animal Tissue (biology), tissue, often muscle, that is eaten as food. Humans have hunted and farmed other animals for meat since prehistory. The Neolithic Revolution allowed the domestication of vertebrates, including chickens, sheep, ...
(
red meat In gastronomy, red meat is commonly red when raw (and a dark color after it is cooked), in contrast to white meat, which is pale in color before (and after) cooking. In culinary terms, only flesh from mammals or fowl (not fish) is classified ...
,
poultry Poultry () are domesticated birds kept by humans for the purpose of harvesting animal products such as meat, Eggs as food, eggs or feathers. The practice of animal husbandry, raising poultry is known as poultry farming. These birds are most typ ...
,
seafood Seafood is any form of Marine life, sea life regarded as food by humans, prominently including Fish as food, fish and shellfish. Shellfish include various species of Mollusca, molluscs (e.g., bivalve molluscs such as clams, oysters, and mussel ...
,
insects Insects (from Latin ') are hexapod invertebrates of the class Insecta. They are the largest group within the arthropod phylum. Insects have a chitinous exoskeleton, a three-part body (head, thorax and abdomen), three pairs of jointed ...
, and the
flesh Flesh is any aggregation of soft tissues of an organism. Various multicellular organisms have soft tissues that may be called "flesh". In mammals, including humans, ''flesh'' encompasses muscles, fats and other loose connective tissues, ...
of any other
animal Animals are multicellular, eukaryotic organisms in the Biology, biological Kingdom (biology), kingdom Animalia (). With few exceptions, animals heterotroph, consume organic material, Cellular respiration#Aerobic respiration, breathe oxygen, ...
). It may also include abstaining from eating all
by-product A by-product or byproduct is a secondary product derived from a production process, manufacturing process or chemical reaction; it is not the primary product or service being produced. A by-product can be useful and marketable or it can be cons ...
s of
animal slaughter Animal slaughter is the killing of animals, usually referring to killing Domestication, domestic livestock. It is estimated that each year, 80 billion land animals are slaughtered for food. Most animals are slaughtered for Human food, food; how ...
. A person who practices vegetarianism is known as a vegetarian. Vegetarianism may be adopted for various reasons. Many people object to eating meat out of respect for
sentient Sentience is the ability to experience feelings and sensations. It may not necessarily imply higher cognitive functions such as awareness, reasoning, or complex thought processes. Some writers define sentience exclusively as the capacity for ''v ...
animal life. Such ethical motivations have been codified under various religious beliefs as well as
animal rights Animal rights is the philosophy according to which many or all Animal consciousness, sentient animals have Moral patienthood, moral worth independent of their Utilitarianism, utility to humans, and that their most basic interests—such as ...
advocacy. Other motivations for vegetarianism are health-related, political,
environmental Environment most often refers to: __NOTOC__ * Natural environment, referring respectively to all living and non-living things occurring naturally and the physical and biological factors along with their chemical interactions that affect an organism ...
, cultural,
aesthetic Aesthetics (also spelled esthetics) is the branch of philosophy concerned with the nature of beauty and taste, which in a broad sense incorporates the philosophy of art.Slater, B. H.Aesthetics ''Internet Encyclopedia of Philosophy,'' , acces ...
,
economic An economy is an area of the Production (economics), production, Distribution (economics), distribution and trade, as well as Consumption (economics), consumption of Goods (economics), goods and Service (economics), services. In general, it is ...
, taste-related, or relate to other
personal Personal may refer to: Aspects of persons' respective individualities * Privacy * Personality * Personal, personal advertisement, variety of classified advertisement used to find romance or friendship Companies * Personal, Inc., a Washington, ...
preference In psychology, economics and philosophy, preference is a technical term usually used in relation to choosing between alternatives. For example, someone prefers A over B if they would rather choose A than B. Preferences are central to decision the ...
s. A small number of towns and cities around the world are exclusively vegetarian or have outlawed meat, including
Rishikesh Rishikesh, also spelt as Hrishikesh, is a city near Dehradun in the Indian state Uttarakhand. The northern part of Rishikesh is in the Dehradun district while the southern part is in the Tehri Garhwal district. It is situated on the right bank ...
, which banned meat, fish, and eggs in 1956. A larger number of towns and cities are vegetarian-friendly. In other locations, finding vegetarian food can pose some difficulties. There are many variations of the vegetarian diet: an
ovo-vegetarian Ovo vegetarianism is a type of vegetarianism Vegetarianism is the practice of abstaining from the Eating, consumption of meat (red meat, poultry, seafood, insects as food, insects, and the flesh of any other animal). It may also include abst ...
diet includes
eggs An egg is an organic vessel in which an embryo begins to develop. Egg, EGG or eggs may also refer to: Biology * Egg cell, the female reproductive cell (gamete) in oogamous organisms Food * Eggs as food Places * Egg, Austria * Egg, Switzerland ...
and a
lacto-vegetarian A lacto-vegetarian (sometimes referred to as a lactarian; from the Latin root lact-, ''milk'') diet abstains from the consumption of meat as well as Egg as food, eggs, while still consuming dairy products such as milk, cheese (without animal renn ...
diet includes
dairy product Dairy products or milk products are food products made from (or containing) milk. The most common dairy animals are cow, water buffalo, goat, nanny goat, and Sheep, ewe. Dairy products include common grocery store food around the world such as y ...
s, while a
lacto-ovo vegetarian Lacto-ovo vegetarianism or ovo-lacto vegetarianism is a type of vegetarianism which forbids animal flesh but allows the consumption of animal products such as dairy product, dairy and Egg as food, eggs. Unlike pescetarianism, it does not include ...
diet includes both. As the strictest of vegetarian diets, a
vegan Veganism is the practice of abstaining from the use of animal products and the consumption of animal source foods, and an associated philosophy that rejects the commodity status of animals. A person who practices veganism is known as a ve ...
diet excludes all
animal product An animal product is any material derived from the body of a non-human animal or their excretions. Examples are meat, fat, blood, milk, eggs, honey, and lesser known products, such as isinglass, rennet, and cochineal. The word animals inc ...
s, and can be accompanied by abstention from the use of animal-derived products, such as leather shoes. Vegetarian diets pose some difficulties. For vitamin B12, depending on the presence or absence of eggs and
dairy product Dairy products or milk products are food products made from (or containing) milk. The most common dairy animals are cow, water buffalo, goat, nanny goat, and Sheep, ewe. Dairy products include common grocery store food around the world such as y ...
s in the diet or other reliable B12 sources, vegetarians may incur a
nutritional deficiency Malnutrition occurs when an organism gets too few or too many nutrients, resulting in health problems. Specifically, it is a deficiency, excess, or imbalance of energy, protein and other nutrients which adversely affects the body's tissues a ...
. Packaged and processed foods may contain minor quantities of animal ingredients. While some vegetarians scrutinize product labels for such ingredients, others do not object to consuming them, or are unaware of their presence.


Etymology

The first written use of the term "vegetarian" originated in the early 19th century, when authors referred to a ''vegetable regimen'' diet. Historically, 'vegetable' could be used to refer to any type of edible
vegetation Vegetation is an assemblage of plants and the ground cover they provide. It is a general term, without specific reference to particular Taxon, taxa, life forms, structure, Spatial ecology, spatial extent, or any other specific Botany, botanic ...
. Modern dictionaries explain its origin as a
compound Compound may refer to: Architecture and built environments * Compound (enclosure), a cluster of buildings having a shared purpose, usually inside a fence or wall ** Compound (fortification), a version of the above fortified with defensive struc ...
of ''
vegetable Vegetables are edible parts of plants that are consumed by humans or other animals as food. This original meaning is still commonly used, and is applied to plants collectively to refer to all edible plant matter, including edible flower, flo ...
'' (
adjective An adjective (abbreviations, abbreviated ) is a word that describes or defines a noun or noun phrase. Its semantic role is to change information given by the noun. Traditionally, adjectives are considered one of the main part of speech, parts of ...
) and the suffix '' -arian'' (in the sense of '' agrarian''). The term was popularized with the foundation of the
Vegetarian Society The Vegetarian Society of the United Kingdom (VSUK) is a British Registered charity in England, registered charity. It campaigns for dietary changes, licenses Vegetarian Society Approved trademarks for Vegetarianism, vegetarian and Veganism, v ...
in
Manchester Manchester () is a city and the metropolitan borough of Greater Manchester, England. It had an estimated population of in . Greater Manchester is the third-most populous metropolitan area in the United Kingdom, with a population of 2.92&nbs ...
in 1847,''OED'' vol. 19, second edition (1989), p. 476; ''Webster's Third New International Dictionary'' p. 2537; ''The Oxford Dictionary of English Etymology'', ''Oxford'', 1966, p. 972; ''The Barnhart Dictionary of Etymology'' (1988), p. 1196; Colin Spencer, ''The Heretic's Feast. A History of Vegetarianism'', London 1993, p. 252. The ''OED'' writes that the word came into general use after the formation of the Vegetarian Society at Ramsgate in 1847, though it offers two examples of usage from 1839 and 1842: * 1839: "If I had had to be my own cook, I should inevitably become a vegetarian." (F. A. Kemble, ''Jrnl. Residence on Georgian Plantation'' (1863) 251) * 1842: "To tell a healthy vegetarian that his diet is very uncongenial with the wants of his nature." (''Healthian'', Apr. 34) The 1839 occurrence remains under discussion; the Oxford English Dictionary's 1839 source is in fact an 1863 publication:
Fanny Kemble Frances Anne Kemble (later Butler; 27 November 180915 January 1893) was a British actress from a Kemble family, theatre family in the early and mid-nineteenth century. She was a well-known and popular writer and abolitionist whose published wor ...
, ''Journal of a Residence on a Georgian Plantation 1838–1839''. The original manuscript has not been located.
although it may have appeared in print before 1847. The earliest occurrences of the term seem to be related to Alcott House—a school on the north side of
Ham Common, London Ham Common is an area of common land in Ham, London. It is a conservation area in, and managed by, the London Borough of Richmond upon Thames. It comprises , the second largest area of common land in the borough, smaller than Barnes Common. I ...
—which was opened in July 1838 by
James Pierrepont Greaves James Pierrepont Greaves (1 February 1777 – 11 March 1842), was an English mystic, educational reformer, socialist and progressive thinker who founded Alcott House, a short-lived utopian community and free school in Surrey. He describe ...
. From 1841, it was known as ''A Concordium, or Industry Harmony College'', and the institution then began to publish its own pamphlet, ''The Healthian''. It provides some of the earliest appearances of the term "vegetarian".


History

In 2025, a study published in ''
Science Science is a systematic discipline that builds and organises knowledge in the form of testable hypotheses and predictions about the universe. Modern science is typically divided into twoor threemajor branches: the natural sciences, which stu ...
'' measured nitrogen isotope ratios in fossilized teeth and determined that
Australopithecus ''Australopithecus'' (, ; or (, ) is a genus of early hominins that existed in Africa during the Pliocene and Early Pleistocene. The genera ''Homo'' (which includes modern humans), ''Paranthropus'', and ''Kenyanthropus'' evolved from some ''Aus ...
was almost entirely vegetarian. The earliest record of vegetarianism comes from the 9th century BCE, inculcating tolerance towards all living beings. Parshwanatha and
Mahavira Mahavira (Devanagari: महावीर, ), also known as Vardhamana (Devanagari: वर्धमान, ), was the 24th ''Tirthankara'' (Supreme Preacher and Ford Maker) of Jainism. Although the dates and most historical details of his lif ...
, the 23rd and 24th ''
tirthankaras In Jainism, a ''Tirthankara'' (; ) is a saviour and supreme preacher of the ''dharma'' (righteous path). The word ''tirthankara'' signifies the founder of a '' tirtha'', a fordable passage across '' saṃsāra'', the sea of interminable birt ...
'' in
Jainism Jainism ( ), also known as Jain Dharma, is an Indian religions, Indian religion whose three main pillars are nonviolence (), asceticism (), and a rejection of all simplistic and one-sided views of truth and reality (). Jainism traces its s ...
, respectively, revived and advocated
ahimsa (, IAST: , ) is the ancient Indian principle of nonviolence which applies to actions towards all living beings. It is a key virtue in Indian religions like Jainism, Buddhism and Hinduism. (also spelled Ahinsa) is one of the cardinal vi ...
and
Jain vegetarianism Jain vegetarianism is practised by the followers of Jain culture and philosophy. It is one of the most rigorous forms of spiritually motivated diet on the Indian subcontinent and beyond. The Jain cuisine is completely lacto-vegetarian and excl ...
between the 8th and 6th centuries BCE; the most comprehensive and strictest form of vegetarianism. In Indian culture, vegetarianism has been closely connected with the attitude of
nonviolence Nonviolence is the personal practice of not causing harm to others under any condition. It may come from the belief that hurting people, animals and/or the environment is unnecessary to achieve an outcome and it may refer to a general philosoph ...
towards animals (called ''
ahimsa (, IAST: , ) is the ancient Indian principle of nonviolence which applies to actions towards all living beings. It is a key virtue in Indian religions like Jainism, Buddhism and Hinduism. (also spelled Ahinsa) is one of the cardinal vi ...
'' in India) for millennia and was promoted by religious groups and philosophers.''Religious Vegetarianism From Hesiod to the Dalai Lama'', ed.
Kerry S. Walters Kerry S. Walters (born 1954) is Professor emeritus of Philosophy at Gettysburg College and author of numerous books on philosophy, religion, and American history as well as over 200 articles in academic journals, trade magazines, and newspapers. H ...
and Lisa Portmess, Albany 2001, p. 13–46.
The
Ācārāṅga Sūtra The Ācārāṅga Sūtra, the foremost and oldest Jain text (''First book'' c. 5th–4th century BCE; Second book c. Late 4th–2nd century BCE), is the first of the twelve Angas, part of the agamas which were compiled based on the teachings o ...
from 5th century BCE advocates Jain-vegetarianism and forbids the monks from walking on grass in order to avoid inflicting pain on them and prevent small insects dwelling inside from getting killed. The ancient Indian work of the ''
Tirukkuṟaḷ The ''Tirukkuṟaḷ'' (), or shortly the ''Kural'' (), is a classic Tamil language text on commoner's morality consisting of 1,330 short couplets, or kurals, of seven words each. The text is divided into three books with aphoristic teaching ...
'', dated before the 5th century CE, explicitly and unambiguously emphasizes shunning meat and
non-killing Nonkilling refers to the absence of killing, threats to kill, and conditions conducive to killing in human society. It traces its origin from the broader concept of ahimsa or nonviolence, one of the central tenets of Indian religions, namely, Ja ...
as a common man's virtues. Chapter 26 of the Tirukkural, particularly
couplet In poetry, a couplet ( ) or distich ( ) is a pair of successive lines that rhyme and have the same metre. A couplet may be formal (closed) or run-on (open). In a formal (closed) couplet, each of the two lines is end-stopped, implying that there ...
s 251–260, deals exclusively on moral vegetarianism or veganism. Among the
Hellenes Greeks or Hellenes (; , ) are an ethnic group and nation native to Greece, Cyprus, southern Albania, Anatolia, parts of Italy and Egypt, and to a lesser extent, other countries surrounding the Eastern Mediterranean and Black Sea. They also f ...
,
Egyptians Egyptians (, ; , ; ) are an ethnic group native to the Nile, Nile Valley in Egypt. Egyptian identity is closely tied to Geography of Egypt, geography. The population is concentrated in the Nile Valley, a small strip of cultivable land stretchi ...
, and others, vegetarianism had medical or
ritual purification Ritual purification is a ritual prescribed by a religion through which a person is considered to be freed of ''uncleanliness'', especially prior to the worship of a deity, and ritual purity is a state of ritual cleanliness. Ritual purification ...
purposes. Vegetarianism was also practiced in
ancient Greece Ancient Greece () was a northeastern Mediterranean civilization, existing from the Greek Dark Ages of the 12th–9th centuries BC to the end of classical antiquity (), that comprised a loose collection of culturally and linguistically r ...
and the earliest reliable evidence for vegetarian theory and practice in Greece dates from the 6th century BCE. The
Orphics Orphism is the name given to a set of religious beliefs and practices originating in the ancient Greek and Hellenistic world, associated with literature ascribed to the mythical poet Orpheus, who descended into the Greek underworld and returned ...
, a religious movement spreading in Greece at that time, also practiced and promoted vegetarianism. Greek teacher
Pythagoras Pythagoras of Samos (;  BC) was an ancient Ionian Greek philosopher, polymath, and the eponymous founder of Pythagoreanism. His political and religious teachings were well known in Magna Graecia and influenced the philosophies of P ...
, who promoted the altruistic doctrine of
metempsychosis In philosophy and theology, metempsychosis () is the transmigration of the soul, especially its reincarnation after death. The term is derived from ancient Greek philosophy, and has been recontextualized by modern philosophers such as Arthur Sc ...
, may have practiced vegetarianism, but is also recorded as eating meat. A fictionalized portrayal of Pythagoras appears in
Ovid Publius Ovidius Naso (; 20 March 43 BC – AD 17/18), known in English as Ovid ( ), was a Augustan literature (ancient Rome), Roman poet who lived during the reign of Augustus. He was a younger contemporary of Virgil and Horace, with whom he i ...
's ''
Metamorphoses The ''Metamorphoses'' (, , ) is a Latin Narrative poetry, narrative poem from 8 Common Era, CE by the Ancient Rome, Roman poet Ovid. It is considered his ''Masterpiece, magnum opus''. The poem chronicles the history of the world from its Cre ...
'', in which he advocates a form of strict vegetarianism. It was through this portrayal that Pythagoras was best known to English-speakers throughout the early modern period and, prior to the coinage of the word "vegetarianism", vegetarians were referred to in English as "
Pythagoreans Pythagoreanism originated in the 6th century BC, based on and around the teachings and beliefs held by Pythagoras and his followers, the Pythagoreans. Pythagoras established the first Pythagorean community in the Ancient Greece, ancient Greek co ...
". Vegetarianism was also practiced about six centuries later in another instance (30 BCE–50 CE) in the northern
Thracian The Thracians (; ; ) were an Indo-European speaking people who inhabited large parts of Southeast Europe in ancient history.. "The Thracians were an Indo-European people who occupied the area that today is shared between north-eastern Greece, ...
region by the
Moesi In Roman literature of the early 1st century CE, the Moesi ( or ; , ''Moisoí'' or Μυσοί, ''Mysoí''; or ''Moesae'') appear as a Paleo-Balkan people who lived in the region around the Timok River to the south of the Danube. The Moesi do ...
tribe (who inhabited present-day
Serbia , image_flag = Flag of Serbia.svg , national_motto = , image_coat = Coat of arms of Serbia.svg , national_anthem = () , image_map = , map_caption = Location of Serbia (gree ...
and
Bulgaria Bulgaria, officially the Republic of Bulgaria, is a country in Southeast Europe. It is situated on the eastern portion of the Balkans directly south of the Danube river and west of the Black Sea. Bulgaria is bordered by Greece and Turkey t ...
), feeding themselves on honey, milk, and cheese. In
Japan Japan is an island country in East Asia. Located in the Pacific Ocean off the northeast coast of the Asia, Asian mainland, it is bordered on the west by the Sea of Japan and extends from the Sea of Okhotsk in the north to the East China Sea ...
in 675, the
Emperor Tenmu was the 40th Emperor of Japan,Imperial Household Agency (''Kunaichō'') 天武天皇 (40) retrieved 2013-8-22. according to the traditional order of succession. Ponsonby-Fane, Richard. (1959). ''The Imperial House of Japan'', p. 53. He ascended ...
prohibited the killing and the eating of meat during the busy farming period between April and September but excluded the eating of wild birds and wild animals. These bans and several others that followed over the centuries were overturned in the nineteenth century during the
Meiji Restoration The , referred to at the time as the , and also known as the Meiji Renovation, Revolution, Regeneration, Reform, or Renewal, was a political event that restored Imperial House of Japan, imperial rule to Japan in 1868 under Emperor Meiji. Althoug ...
. In China, during the
Song dynasty The Song dynasty ( ) was an Dynasties of China, imperial dynasty of China that ruled from 960 to 1279. The dynasty was founded by Emperor Taizu of Song, who usurped the throne of the Later Zhou dynasty and went on to conquer the rest of the Fiv ...
,
Buddhist cuisine Buddhist cuisine is an Asian cuisine that is followed by Bhikkhu, monks and many believers from areas historically influenced by Mahayana Buddhism. It is vegetarian or vegan, and it is based on the Dharmic concept of ahimsa (non-violence). Vege ...
became popular enough that vegetarian restaurants appeared where chefs used ingredients such as
beans A bean is the seed of some plants in the legume family (Fabaceae) used as a vegetable for human consumption or animal feed. The seeds are often preserved through drying (a ''pulse''), but fresh beans are also sold. Dried beans are tradition ...
,
gluten Gluten is a structural protein naturally found in certain Cereal, cereal grains. The term ''gluten'' usually refers to the elastic network of a wheat grain's proteins, gliadin and glutenin primarily, that forms readily with the addition of water ...
, root vegetables and
mushrooms A mushroom or toadstool is the fleshy, spore-bearing fruiting body of a fungus, typically produced above ground on soil or another food source. ''Toadstool'' generally refers to a poisonous mushroom. The standard for the name "mushroom" is ...
to create
meat analogue A meat alternative or meat substitute (also called plant-based meat, mock meat, or alternative protein), is a food product made from vegetarian or vegan ingredients, eaten as a replacement for meat. Meat alternatives typically approximate qual ...
s including pork, fowl, eggs and crab roe and many meat substitutes used even today such as
tofu or bean curd is a food prepared by Coagulation (milk), coagulating soy milk and then pressing the resulting curds into solid white blocks of varying softness: ''silken'', ''soft'', ''firm'', and ''extra (or super) firm''. It originated in Chin ...
,
seitan Seitan (, ; ) is a food made from gluten, the main protein of wheat. It is also known as miànjīn ( zh, links=no, t=麵筋), fu (), milgogi (), wheat meat, gluten meat, or simply gluten. Wheat gluten is an alternative to soybean-based foods, ...
and konjac originate in Chinese Buddhist cuisine. Following the Christianization of the Roman Empire in
late antiquity Late antiquity marks the period that comes after the end of classical antiquity and stretches into the onset of the Early Middle Ages. Late antiquity as a period was popularized by Peter Brown (historian), Peter Brown in 1971, and this periodiza ...
, vegetarianism practically disappeared from Europe, as it did elsewhere, except in India. Several orders of
monk A monk (; from , ''monachos'', "single, solitary" via Latin ) is a man who is a member of a religious order and lives in a monastery. A monk usually lives his life in prayer and contemplation. The concept is ancient and can be seen in many reli ...
s in
medieval Europe In the history of Europe, the Middle Ages or medieval period lasted approximately from the 5th to the late 15th centuries, similarly to the post-classical period of World history (field), global history. It began with the fall of the West ...
restricted or banned the consumption of meat for
ascetic Asceticism is a lifestyle characterized by abstinence from worldly pleasures through self-discipline, self-imposed poverty, and simple living, often for the purpose of pursuing spiritual goals. Ascetics may withdraw from the world for their pra ...
reasons, but none of them eschewed fish. Moreover, the medieval definition of "fish" included such animals as seals,
porpoise Porpoises () are small Oceanic dolphin, dolphin-like cetaceans classified under the family Phocoenidae. Although similar in appearance to dolphins, they are more closely related to narwhals and Beluga whale, belugas than to the Oceanic dolphi ...
s,
dolphin A dolphin is an aquatic mammal in the cetacean clade Odontoceti (toothed whale). Dolphins belong to the families Delphinidae (the oceanic dolphins), Platanistidae (the Indian river dolphins), Iniidae (the New World river dolphins), Pontopori ...
s,
barnacle geese The barnacle goose (''Branta leucopsis'') is a species of goose that belongs to the genus '' Branta'' of black geese, which contains species with extensive black in the plumage, distinguishing them from the grey '' Anser'' species. Despite its s ...
,
puffin Puffins are any of three species of small alcids (auks) in the bird genus ''Fratercula''. These are pelagic seabirds that feed primarily by diving in the water. They breed in large colonies on coastal cliffs or offshore islands, nesting in crev ...
s, and
beavers Beavers (genus ''Castor'') are large, semiaquatic rodents of the Northern Hemisphere. There are two existing species: the North American beaver (''Castor canadensis'') and the Eurasian beaver (''C. fiber''). Beavers are the second-large ...
. Vegetarianism re-emerged during the
Renaissance The Renaissance ( , ) is a Periodization, period of history and a European cultural movement covering the 15th and 16th centuries. It marked the transition from the Middle Ages to modernity and was characterized by an effort to revive and sur ...
, becoming more widespread in the 19th and 20th centuries. In 1847, the first
Vegetarian Society The Vegetarian Society of the United Kingdom (VSUK) is a British Registered charity in England, registered charity. It campaigns for dietary changes, licenses Vegetarian Society Approved trademarks for Vegetarianism, vegetarian and Veganism, v ...
was founded in the United Kingdom; Germany, the Netherlands, and other countries followed. In 1886, the vegetarian colony
Nueva Germania Nueva Germania (New Germania, ) is a district of San Pedro Department in Paraguay. It was founded as a German settlement on 23 August 1887 by Bernhard Förster and Elisabeth Nietzsche to create a model community in the New World based on antise ...
was founded in
Paraguay Paraguay, officially the Republic of Paraguay, is a landlocked country in South America. It is bordered by Argentina to the Argentina–Paraguay border, south and southwest, Brazil to the Brazil–Paraguay border, east and northeast, and Boli ...
, though its vegetarian aspect would prove short-lived. The
International Vegetarian Union The International Vegetarian Union (IVU) is an international non-profit organization whose purpose is to promote vegetarianism. The IVU was founded in 1908 in Dresden, Germany. It is an umbrella organisation, which includes organisations from ...
, an association of the national societies, was founded in 1908. In the Western world, the popularity of vegetarianism grew during the 20th century as a result of nutritional, ethical, and—more recently—environmental and economic concerns.


Locations

The percentage of vegetarians varies by country. In general, vegetarians are a minority, except in a small number of cities, towns, and intentional communities around the world that are exclusively vegetarian due to religious and cultural influences. A small number of religious centers in India have banned all meat sales within municipal boundaries. Since 1956, Rishikesh has banned meat, fish, and eggs. In 2014, Palitana banned meat sales. All-vegetarian locations are: *
Cheremshanka, Altai Republic Cheremshanka (; , ''Kalbalu'') is a rural locality (a selo) in Souzginskoye Rural Settlement of Mayminsky District, the Altai Republic, Russia. The population was 445 as of 2016. Geography Cheremshanka is located on the Katun River, 22 km sou ...
in Russia * Community of the Ark, La Borie Noble, France *
Haridwar Haridwar (; ; formerly Mayapuri) is a city and municipal corporation in the Haridwar district of Uttarakhand, India. With a population of 228,832 in 2011, it is the second-largest city in the state and the largest in the district. The city is s ...
in Uttarakhand, India * New Vrindaban in West Virginia, United States *
Palitana Palitana is a city in the Bhavnagar district of the Indian state of Gujarat. It is one of the most significant pilgrimage destinations for followers of Jainism, renowned for the Shatrunjaya hill temples, a sprawling complex of over 900 marble t ...
in Gujarat, India *
Pushkar Pushkar is a temple town near Ajmer City and headquarters of Pushkar tehsil in the Ajmer district in the Indian state of Rajasthan. It is situated about northwest of Ajmer and about southwest of Jaipur.Rishikesh Rishikesh, also spelt as Hrishikesh, is a city near Dehradun in the Indian state Uttarakhand. The northern part of Rishikesh is in the Dehradun district while the southern part is in the Tehri Garhwal district. It is situated on the right bank ...
in Uttarakhand, India *
Tirumala Tirumala is a Hindu religious temple town in Tirupati district of the Indian state of Andhra Pradesh. It is one of the neighbourhoods of the Tirupati city. The town is a part of Tirupati Urban Development Authority and located in Tirupat ...
in Andhra Pradesh, India * The Farm in Tennessee, United States Heavily-vegetarian locations are: *
Bengaluru Bengaluru, also known as Bangalore (List of renamed places in India#Karnataka, its official name until 1 November 2014), is the Capital city, capital and largest city of the southern States and union territories of India, Indian state of Kar ...
the capital of Karnataka, India *
Chennai Chennai, also known as Madras (List of renamed places in India#Tamil Nadu, its official name until 1996), is the capital city, capital and List of cities in Tamil Nadu by population, largest city of Tamil Nadu, the southernmost states and ...
the capital of Tamil Nadu, India *
Chiang Mai Chiang Mai, sometimes written as Chiengmai or Chiangmai, is the largest city in northern Thailand, the capital of Chiang Mai province and the List of municipalities in Thailand#Largest cities by urban population, second largest city in Thailan ...
in Thailand *
Loma Linda, California Loma Linda ( Spanish for "Beautiful Hill") is a city in San Bernardino County, California, United States, that was incorporated in 1970. The population was 24,791 at the 2020 census, up from 23,261 at the 2010 census. The central area of the ...
in the United States *
Shashamane Shashamane (, ) is a city in southern Ethiopia. Located in the Oromia Region with a 2007 Census population of 100,454, but with an estimated 208,368 inhabitants in mid 2022; the town is known for its Rastafarian community. A couple of years ago, ...
in Oromia Region, Ethiopia *
Varanasi Varanasi (, also Benares, Banaras ) or Kashi, is a city on the Ganges river in northern India that has a central place in the traditions of pilgrimage, death, and mourning in the Hindu world.* * * * The city has a syncretic tradition of I ...
in Uttar Pradesh, India Former all-vegetarian locations are: * Alcott House in Surrey, United Kingdom * Fruitlands in Massachusetts, United States


Varieties

There are a number of vegetarian diets that exclude or include various foods: *
Fruitarianism Fruitarianism () is a diet that consists primarily of consuming fruits and possibly nuts and seeds, but without any animal products. Fruitarian diets are subject to criticism and health concerns. Fruitarianism may be adopted for different rea ...
permits only fruit, nuts, seeds, and other plant matter that can be gathered without harming the plant. *
Macrobiotic diet A macrobiotic diet (or macrobiotics) is an unconventional restrictive diet based on ideas about types of food drawn from Zen Buddhism. The diet tries to balance the supposed yin and yang elements of food and cookware. Major principles of macrobi ...
s consist mostly of
whole grain A whole grain is a grain of any cereal and pseudocereal that contains the endosperm, germ, and bran, in contrast to refined grains, which retain only the endosperm. As part of a general healthy diet, consumption of whole grains is associated ...
s and
bean A bean is the seed of some plants in the legume family (Fabaceae) used as a vegetable for human consumption or animal feed. The seeds are often preserved through drying (a ''pulse''), but fresh beans are also sold. Dried beans are traditi ...
s. *
Lacto vegetarianism A lacto-vegetarian (sometimes referred to as a lactarian; from the Latin root lact-, ''milk'') diet abstains from the consumption of meat as well as Egg as food, eggs, while still consuming dairy products such as milk, cheese (without animal renn ...
includes dairy products but not eggs. *
Ovo vegetarianism Ovo vegetarianism is a type of vegetarianism which allows for the consumption of eggs but not dairy products, in contrast with lacto vegetarianism. Those who practice ovo vegetarianism are called ovo-vegetarians. "Ovo" comes from the Latin word ...
includes eggs but not dairy products. *
Lacto-ovo vegetarianism Lacto-ovo vegetarianism or ovo-lacto vegetarianism is a type of vegetarianism which forbids animal flesh but allows the consumption of animal products such as dairy and eggs. Unlike pescetarianism, it does not include fish or other seafood. A ...
(or ovo-lacto vegetarianism) includes animal products such as eggs, milk, and honey. *
Sattvic diet A sattvic diet is a type of plant-based diet within Ayurveda where food is divided into what is defined as three yogic qualities ( guna) known as sattva. In this system of dietary classification, foods that decrease the energy of the body ar ...
(also known as yogic diet), a
plant-based diet A plant-based diet is a diet consisting mostly or entirely of plant-based foods. It encompasses a wide range of dietary patterns that contain low amounts of animal products and high amounts of fiber-rich plant products such as vegetables ...
which may also include dairy and honey, but excludes eggs, red lentils,
durian The durian () is the edible fruit of several tree species belonging to the genus ''Durio''. There are 30 recognized species, at least nine of which produce edible fruit. ''Durio zibethinus'', native to Borneo and Sumatra, is the only species ...
, mushrooms, ''
allium ''Allium'' is a large genus of monocotyledonous flowering plants with around 1000 accepted species, making ''Allium'' the largest genus in the family Amaryllidaceae and among the largest plant genera in the world. Many of the species are edible, ...
s'',
blue cheese Blue cheese is any cheese made with the addition of Microbial food cultures, cultures of edible Mold (fungus), molds, which create blue-green spots or veins through the cheese. Blue cheeses vary in flavor from mild to strong and from slightly ...
s, fermented foods or sauces, and alcoholic drinks. Coffee, black or green tea,
chocolate Chocolate is a food made from roasted and ground cocoa beans that can be a liquid, solid, or paste, either by itself or to flavoring, flavor other foods. Cocoa beans are the processed seeds of the cacao tree (''Theobroma cacao''); unprocesse ...
,
nutmeg Nutmeg is the seed, or the ground spice derived from the seed, of several tree species of the genus '' Myristica''; fragrant nutmeg or true nutmeg ('' M. fragrans'') is a dark-leaved evergreen tree cultivated for two spices derived from its fru ...
, and any other type of stimulant (including excessively
pungent Pungency ( ) is the taste of food commonly referred to as spiciness, hotness or heat, found in foods such as chili peppers. Highly pungent tastes may be experienced as unpleasant. The term piquancy ( ) is sometimes applied to foods with a lower ...
spices) are sometimes excluded, as well. *
Veganism Veganism is the practice of abstaining from the use of animal products and the consumption of animal source foods, and an associated philosophy that rejects the commodity status of animals. A person who practices veganism is known as a vega ...
excludes all animal flesh and by-products, such as eggs, milk, honey,
edible bird's nest Edible bird's nests, also known as swallow nests ( zh, c=燕窝, p=yànwō), are bird nests created from solidified saliva by edible-nest swiftlets, Indian swiftlets and other swiftlets of the genera ''Aerodramus'', '' Hydrochous'', '' Scho ...
and items refined or manufactured through any such product, such as animal-tested
baking soda Sodium bicarbonate (IUPAC name: sodium hydrogencarbonate), commonly known as baking soda or bicarbonate of soda (or simply “bicarb” especially in the UK) is a chemical compound with the formula NaHCO3. It is a salt (chemistry), salt compose ...
or white sugar refined with
bone char Bone char () is a porous, black, granular material produced by charring animal bones. Its composition varies depending on how it is made; however, it consists mainly of tricalcium phosphate (or hydroxyapatite) 57–80%, calcium carbonate 6–10% ...
. **
Raw veganism Raw foodism, also known as rawism or a raw food diet, is the dietary practice of eating only or mostly food that is uncooked and unprocessed. Depending on the philosophy, or type of lifestyle and results desired, raw food diets may include ...
includes only fresh and uncooked fruit, nuts, seeds, and vegetables. Food must not be heated above to be considered "raw". Usually, raw vegan food is only ever "cooked" with a
food dehydrator Tomato slices ready to be dried in a convection-type food dehydrator. In this model, multiple trays can be stacked on top of each other and warm air flows around the food. A food dehydrator is a device that removes moisture from food to aid in i ...
at low temperatures. Within the " ovo-" groups, there are many who refuse to consume fertilized
egg An egg is an organic vessel grown by an animal to carry a possibly fertilized egg cell (a zygote) and to incubate from it an embryo within the egg until the embryo has become an animal fetus that can survive on its own, at which point the ...
s (with balut being an extreme example); however, such distinction is typically not specifically addressed. Some vegetarians also avoid products that may use animal ingredients not included in their labels or which use animal products in their manufacturing. For example, sugars that are whitened with
bone char Bone char () is a porous, black, granular material produced by charring animal bones. Its composition varies depending on how it is made; however, it consists mainly of tricalcium phosphate (or hydroxyapatite) 57–80%, calcium carbonate 6–10% ...
, cheeses that use animal
rennet Rennet () is a complex set of enzymes produced in the stomachs of ruminant mammals. Chymosin, its key component, is a protease, protease enzyme that curdling, curdles the casein in milk. In addition to chymosin, rennet contains other enzymes, su ...
(
enzyme An enzyme () is a protein that acts as a biological catalyst by accelerating chemical reactions. The molecules upon which enzymes may act are called substrate (chemistry), substrates, and the enzyme converts the substrates into different mol ...
s from animal stomach lining), gelatin (derived from the
collagen Collagen () is the main structural protein in the extracellular matrix of the connective tissues of many animals. It is the most abundant protein in mammals, making up 25% to 35% of protein content. Amino acids are bound together to form a trip ...
inside animals' skin, bones, and
connective tissue Connective tissue is one of the four primary types of animal tissue, a group of cells that are similar in structure, along with epithelial tissue, muscle tissue, and nervous tissue. It develops mostly from the mesenchyme, derived from the mesod ...
), some
cane sugar Sucrose, a disaccharide, is a sugar composed of glucose and fructose subunits. It is produced naturally in plants and is the main constituent of white sugar. It has the molecular formula . For human consumption, sucrose is extracted and refined ...
(but not
beet sugar Sucrose, a disaccharide, is a sugar composed of glucose and fructose subunits. It is produced naturally in plants and is the main constituent of white sugar. It has the molecular formula . For human consumption, sucrose is extracted and refined ...
) and beverages (such as apple juice and alcohol) clarified with gelatin or crushed shellfish and
sturgeon Sturgeon (from Old English ultimately from Proto-Indo-European language, Proto-Indo-European *''str̥(Hx)yón''-) is the common name for the 27 species of fish belonging to the family Acipenseridae. The earliest sturgeon fossils date to the ...
, while other vegetarians are unaware of, or do not mind, such ingredients. In the 21st century, 90% of rennet and
chymosin Chymosin or rennin is a protease found in rennet. It is an aspartic endopeptidase belonging to MEROPS A1 family. It is produced by newborn ruminant animals in the lining of the abomasum to curdle the milk they ingest, allowing a longer reside ...
used in cheesemaking are derived from industrial
fermentation Fermentation is a type of anaerobic metabolism which harnesses the redox potential of the reactants to make adenosine triphosphate (ATP) and organic end products. Organic molecules, such as glucose or other sugars, are catabolized and reduce ...
processes, which satisfy both
kosher (also or , ) is a set of dietary laws dealing with the foods that Jewish people are permitted to eat and how those foods must be prepared according to Jewish law. Food that may be consumed is deemed kosher ( in English, ), from the Ashke ...
and
halal ''Halal'' (; ) is an Arabic word that translates to in English. Although the term ''halal'' is often associated with Islamic dietary laws, particularly meat that is slaughtered according to Islamic guidelines, it also governs ethical practices ...
requirements. Individuals sometimes label themselves "vegetarian" while practicing a semi-vegetarian diet, as some dictionary definitions describe vegetarianism as sometimes including the consumption of fish,
Shorter Oxford English Dictionary The ''Shorter Oxford English Dictionary'' (''SOED'') is an English language dictionary published by the Oxford University Press. The SOED is a two-volume abridgement of the twenty-volume ''Oxford English Dictionary'' (''OED''). Print editions ...
(2002 and 2007) defines "vegetarian" (noun) as "A person who on principle abstains from animal food; ''esp.'' one who avoids meat but will eat dairy produce and eggs and sometimes also fish (
cf. The abbreviation cf. (short for either Latin or , both meaning 'compare') is generally used in writing to refer the reader to other material to make a comparison with the topic being discussed. However some sources offer differing or even contr ...
VEGAN ''noun'')."
or only include
mammal A mammal () is a vertebrate animal of the Class (biology), class Mammalia (). Mammals are characterised by the presence of milk-producing mammary glands for feeding their young, a broad neocortex region of the brain, fur or hair, and three ...
ian flesh as part of their definition of meat, while other definitions exclude fish and all animal flesh. In other cases, individuals may describe themselves as "flexitarian". These diets may be followed by those who reduce animal flesh consumed as a way of transitioning to a complete vegetarian diet or for health, ethical, environmental, or other reasons. Semi-vegetarian diets include: *
Pescetarianism Pescetarianism ( ; sometimes spelled pescatarianism) is a dietary practice in which seafood is the only source of meat in an otherwise vegetarian diet. The inclusion of other animal products, such as eggs and dairy, is optional. According to ...
, which includes fish and possibly other forms of seafood. *
Pollotarianism Pollotarianism is the practice of adhering to a diet that incorporates poultry as the only source of meat in an otherwise vegetarian diet. While ''pollo'' specifically means chicken in both Spanish and in Italian (with ''pollame'' meaning poul ...
, which includes chicken and possibly other poultry. Semi-vegetarianism is contested by vegetarian groups, such as the
Vegetarian Society The Vegetarian Society of the United Kingdom (VSUK) is a British Registered charity in England, registered charity. It campaigns for dietary changes, licenses Vegetarian Society Approved trademarks for Vegetarianism, vegetarian and Veganism, v ...
, which states that vegetarianism excludes all animal flesh. Consumption of eggs is not considered to be a part of a vegetarian diet in India, as egg is an animal product that gives birth to the next generation of the relevant species.


Health research

In Western countries, the most common motive for people practicing vegetarianism is health consciousness. The
Academy of Nutrition and Dietetics The Academy of Nutrition and Dietetics is a multi-unit enterprise that includes a 501(c)(6) trade association in the United States. With over 112,000 members, the association claims to be the largest organization of food and nutrition professiona ...
has stated that at all stages of life, a properly planned vegetarian diet can be "healthful, nutritionally adequate, and may be beneficial in the prevention and treatment of certain diseases." Vegetarian diets offer lower levels of
saturated fat A saturated fat is a type of fat in which the fatty acid chains have all single bonds between the carbon atoms. A fat known as a glyceride is made of two kinds of smaller molecules: a short glycerol backbone, and fatty acids that each cont ...
,
cholesterol Cholesterol is the principal sterol of all higher animals, distributed in body Tissue (biology), tissues, especially the brain and spinal cord, and in Animal fat, animal fats and oils. Cholesterol is biosynthesis, biosynthesized by all anima ...
and animal protein, and higher levels of carbohydrates,
fibre Fiber (spelled fibre in British English; from ) is a natural or artificial substance that is significantly longer than it is wide. Fibers are often used in the manufacture of other materials. The strongest engineering materials often incorp ...
,
magnesium Magnesium is a chemical element; it has Symbol (chemistry), symbol Mg and atomic number 12. It is a shiny gray metal having a low density, low melting point and high chemical reactivity. Like the other alkaline earth metals (group 2 ...
,
potassium Potassium is a chemical element; it has Symbol (chemistry), symbol K (from Neo-Latin ) and atomic number19. It is a silvery white metal that is soft enough to easily cut with a knife. Potassium metal reacts rapidly with atmospheric oxygen to ...
,
folate Folate, also known as vitamin B9 and folacin, is one of the B vitamins. Manufactured folic acid, which is converted into folate by the body, is used as a dietary supplement and in food fortification as it is more stable during processing and ...
,
vitamin Vitamins are Organic compound, organic molecules (or a set of closely related molecules called vitamer, vitamers) that are essential to an organism in small quantities for proper metabolism, metabolic function. Nutrient#Essential nutrients, ...
s C and E, and
phytochemical Phytochemicals are naturally-occurring chemicals present in or extracted from plants. Some phytochemicals are nutrients for the plant, while others are metabolites produced to enhance plant survivability and reproduction. The fields of ext ...
s.


Bones

Studies have shown that a (non-lacto) vegetarian diet may increase the risk of calcium deficiency and low
bone mineral density Bone density, or bone mineral density, is the amount of bone mineral in bone tissue. The concept is of mass of mineral per volume of bone (relating to density in the physics sense), although clinically it is measured by proxy according to opti ...
. A 2019 review found that vegetarians have lower bone mineral density at the
femoral neck The femoral neck (also femur neck or neck of the femur) is a flattened pyramidal process of bone, connecting the femoral head with the femoral shaft, and forming with the latter a wide angle opening medialward. Structure The neck is flattene ...
and
lumbar spine The lumbar vertebrae are located between the thoracic vertebrae and pelvis. They form the lower part of the back in humans, and the tail end of the back in quadrupeds. In humans, there are five lumbar vertebrae. The term is used to describe t ...
compared to omnivores. A 2020 meta-analysis found that infants fed a lacto-vegetarian diet exhibited normal growth and development. A 2021 review found no differences in growth between vegetarian and meat-eating children.


Diabetes

Vegetarian diets are under preliminary research for their potential to help people with
type 2 diabetes Type 2 diabetes (T2D), formerly known as adult-onset diabetes, is a form of diabetes mellitus that is characterized by high blood sugar, insulin resistance, and relative lack of insulin. Common symptoms include increased thirst, frequent ...
.


Cardiovascular system

Meta-analyses have reported a reduced risk of death from
ischemic heart disease Coronary artery disease (CAD), also called coronary heart disease (CHD), or ischemic heart disease (IHD), is a type of heart disease involving the reduction of blood flow to the cardiac muscle due to a build-up of atheromatous plaque in the ...
and from
cerebrovascular disease Cerebrovascular disease includes a variety of medical conditions that affect the blood vessels of the brain and the cerebral circulation. Arteries supplying oxygen and nutrients to the brain are often damaged or deformed in these disorders. Th ...
among vegetarians.


Mental health

Reviews of vegan and vegetarian diets showed a possible association with depression and
anxiety Anxiety is an emotion characterised by an unpleasant state of inner wikt:turmoil, turmoil and includes feelings of dread over Anticipation, anticipated events. Anxiety is different from fear in that fear is defined as the emotional response ...
, particularly among people under 26 years old. Another review found no significant associations between a vegetarian diet and depression or anxiety.


Eating disorders

The
American Dietetic Association The Academy of Nutrition and Dietetics is a multi-unit enterprise that includes a 501(c)(6) trade association in the United States. With over 112,000 members, the association claims to be the largest organization of food and nutrition professiona ...
discussed that vegetarian diets may be more common among adolescents with
eating disorder An eating disorder is a mental disorder defined by abnormal eating behaviors that adversely affect a person's health, physical or mental health, mental health. These behaviors may include eating too much food or too little food. Types of eatin ...
s, indicating that vegetarian diets do not cause eating disorders, but rather "vegetarian diets may be selected to camouflage an existing eating disorder".


Mortality risk

A 2012 study found a reduced risk in all-cause mortality in vegetarians. A 2017 review found a lower mortality (−25%) from ischemic heart disease.


Diet composition and nutrition

Western vegetarian diets are typically high in
carotenoid Carotenoids () are yellow, orange, and red organic pigments that are produced by plants and algae, as well as several bacteria, archaea, and fungi. Carotenoids give the characteristic color to pumpkins, carrots, parsnips, corn, tomatoes, cana ...
s, but relatively low in
omega-3 fatty acid Omega−3 fatty acids, also called omega−3 oils, ω−3 fatty acids or ''n''−3 fatty acids, are polyunsaturated fatty acids (PUFAs) characterized by the presence of a double bond three atoms away from the terminal methyl group in their ...
s and vitamin B12. Vegans can have particularly low intake of
vitamin B B vitamins are a class of water-soluble vitamins that play important roles in cell metabolism and synthesis of red blood cells. They are a chemically diverse class of compounds. Dietary supplements containing all eight are referred to as a vita ...
and
calcium Calcium is a chemical element; it has symbol Ca and atomic number 20. As an alkaline earth metal, calcium is a reactive metal that forms a dark oxide-nitride layer when exposed to air. Its physical and chemical properties are most similar to it ...
if they do not eat enough items such as
collard greens Collard is a group of loose-leafed cultivars of ''Brassica oleracea'' (the same species as many common vegetables like cabbage and broccoli). Part of the acephala cultivar group (or kale group), collard is also classified as the variety ''B.& ...
,
leafy greens Leaf vegetables, also called leafy greens, vegetable greens, or simply greens, are plant leaves eaten as a vegetable, sometimes accompanied by their petioles and shoots, if tender. Leaf vegetables eaten raw in a salad can be called salad gre ...
,
tempeh Tempe or tempeh (; , ) is a traditional Indonesian food made from fermented soybeans. It is made by a natural culturing and controlled fermentation process that binds soybeans into a cake form. A fungus, '' Rhizopus oligosporus'' or '' Rhizopu ...
and
tofu or bean curd is a food prepared by Coagulation (milk), coagulating soy milk and then pressing the resulting curds into solid white blocks of varying softness: ''silken'', ''soft'', ''firm'', and ''extra (or super) firm''. It originated in Chin ...
(soy). High levels of dietary fiber,
folic acid Folate, also known as vitamin B9 and folacin, is one of the B vitamins. Manufactured folic acid, which is converted into folate by the body, is used as a dietary supplement and in food fortification as it is more stable during processing and ...
, vitamins C and E, and magnesium, and low consumption of saturated fat are all considered to be beneficial aspects of a vegetarian diet. A well planned vegetarian diet will provide all nutrients in a meat-eater's diet to the same level for all stages of life.


Protein

Protein intake in vegetarian diets tends to be lower than in meat diets but can meet the daily requirements for most people. Studies at
Harvard University Harvard University is a Private university, private Ivy League research university in Cambridge, Massachusetts, United States. Founded in 1636 and named for its first benefactor, the History of the Puritans in North America, Puritan clergyma ...
as well as other studies conducted in the United States, United Kingdom, Canada, Australia,
New Zealand New Zealand () is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and List of islands of New Zealand, over 600 smaller islands. It is the List of isla ...
, and various European countries, confirmed that vegetarian diets provide sufficient protein intake as long as a variety of plant sources are available and consumed.


Iron

Vegetarian diets typically contain similar levels of iron to non-vegetarian diets, but this has lower
bioavailability In pharmacology, bioavailability is a subcategory of absorption and is the fraction (%) of an administered drug that reaches the systemic circulation. By definition, when a medication is administered intravenously, its bioavailability is 100%. H ...
than iron from meat sources, and its absorption can sometimes be inhibited by other dietary constituents. According to the Vegetarian Resource Group, consuming food that contains vitamin C, such as citrus fruit or juices, tomatoes, or broccoli, is a good way to increase the amount of iron absorbed at a meal. Vegetarian foods rich in iron include black beans,
cashew Cashew is the common name of a tropical evergreen tree ''Anacardium occidentale'', in the family Anacardiaceae. It is native to South America and is the source of the cashew nut and the cashew apple, an accessory fruit. The tree can grow as t ...
s,
hempseed Hemp, or industrial hemp, is a plant in the botanical class of ''Cannabis sativa'' cultivars grown specifically for industrial and consumable use. It can be used to make a wide range of products. Along with bamboo, hemp is among the fastest ...
,
kidney bean The kidney bean is a variety of the common bean (''Phaseolus vulgaris'') named for its resemblance to a human kidney. Classification There are different classifications of kidney beans, such as: *Red kidney bean (also known as common kidney ...
s,
broccoli Broccoli (''Brassica oleracea'' var. ''italica'') is an edible green plant in the Brassicaceae, cabbage family (family Brassicaceae, genus ''Brassica'') whose large Pseudanthium, flowering head, plant stem, stalk and small associated leafy gre ...
,
lentil The lentil (''Vicia lens'' or ''Lens culinaris'') is an annual plant, annual legume grown for its Lens (geometry), lens-shaped edible seeds or ''pulses'', also called ''lentils''. It is about tall, and the seeds grow in Legume, pods, usually w ...
s,
oatmeal Oatmeal is a preparation of oats that have been dehusked, steamed, and flattened, or a coarse flour of hulled oat grains ( groats) that have either been milled (ground), rolled, or steel-cut. Ground oats are also called white oats. Steel- ...
,
raisin A raisin is a Dried fruit, dried grape. Raisins are produced in many regions of the world and may be eaten raw or used in cooking, baking, and brewing. In the United Kingdom, Republic of Ireland, Ireland, New Zealand, Australia and South Afri ...
s,
jaggery Jaggery is a List of unrefined sweeteners, traditional non-centrifugal cane sugar consumed in the Indian subcontinent, Southeast Asia, North America, Central America, Brazil and Africa. It is a concentrated product of Sugarcane juice, cane jui ...
,
spinach Spinach (''Spinacia oleracea'') is a leafy green flowering plant native to Central Asia, Central and Western Asia. It is of the order Caryophyllales, family Amaranthaceae, subfamily Chenopodioideae. Its leaves are a common vegetable consumed eit ...
,
cabbage Cabbage, comprising several cultivars of '' Brassica oleracea'', is a leafy green, red (purple), or white (pale green) biennial plant grown as an annual vegetable crop for its dense-leaved heads. It is descended from the wild cabbage ( ''B.& ...
, lettuce,
black-eyed pea The black-eyed pea or black-eyed bean is a legume grown around the world for its medium-sized, edible bean. It is a subspecies of the cowpea, an Old World plant domesticated in Africa, and is sometimes simply called a cowpea. The common commerci ...
s,
soybean The soybean, soy bean, or soya bean (''Glycine max'') is a species of legume native to East Asia, widely grown for its edible bean. Soy is a staple crop, the world's most grown legume, and an important animal feed. Soy is a key source o ...
s, many
breakfast cereal Breakfast cereal is a category of food, including food products, made from food processing, processed cereal, cereal grains, that are eaten as part of breakfast or as a snack food, primarily in Western societies. Although warm, cooked cereals li ...
s,
sunflower seed A sunflower seed is a seed from a sunflower (''Helianthus annuus''). There are three types of commonly used sunflower seeds: linoleic (most common), high oleic, and sunflower oil seeds. Each variety has its own unique levels of monounsatura ...
s,
chickpea The chickpea or chick pea (''Cicer arietinum'') is an annual plant, annual legume of the family (biology), family Fabaceae, subfamily Faboideae, cultivated for its edible seeds. Its different types are variously known as gram," Bengal gram, ga ...
s,
tomato juice Tomato juice is a juice made from tomatoes, usually used as a beverage, either plain or in cocktails such as a Bloody Mary (cocktail), Bloody Mary, a Caesar (cocktail), Caesar, or Michelada. Production Many commercial manufacturers of tomato ju ...
,
tempeh Tempe or tempeh (; , ) is a traditional Indonesian food made from fermented soybeans. It is made by a natural culturing and controlled fermentation process that binds soybeans into a cake form. A fungus, '' Rhizopus oligosporus'' or '' Rhizopu ...
,
molasses Molasses () is a viscous byproduct, principally obtained from the refining of sugarcane or sugar beet juice into sugar. Molasses varies in the amount of sugar, the method of extraction, and the age of the plant. Sugarcane molasses is usuall ...
,
thyme Thyme () is a culinary herb consisting of the dried aerial parts of some members of the genus ''Thymus (plant), Thymus'' of flowering plants in the mint family Lamiaceae. Thymes are native to Eurasia and north Africa. Thymes have culinary, medici ...
, and whole-wheat bread. The related vegan diets can often be higher in iron than vegetarian diets, because dairy products are low in iron. Iron stores often tend to be lower in vegetarians than non-vegetarians, and a few small studies report very high rates of iron deficiency (up to 40%, and 58% of the respective vegetarian or vegan groups). However, the
American Dietetic Association The Academy of Nutrition and Dietetics is a multi-unit enterprise that includes a 501(c)(6) trade association in the United States. With over 112,000 members, the association claims to be the largest organization of food and nutrition professiona ...
states that iron deficiency is no more common in vegetarians than non-vegetarians (adult males are rarely iron deficient); iron deficiency
anaemia Anemia (also spelt anaemia in British English) is a blood disorder in which the blood has a reduced ability to carry oxygen. This can be due to a lower than normal number of red blood cells, a reduction in the amount of hemoglobin availab ...
is rare no matter the diet.


Vitamin B12

Vitamin B12 is not generally present in plants but is naturally found in foods of animal origin. Lacto-ovo vegetarians can obtain B12 from
dairy product Dairy products or milk products are food products made from (or containing) milk. The most common dairy animals are cow, water buffalo, goat, nanny goat, and Sheep, ewe. Dairy products include common grocery store food around the world such as y ...
s and eggs, and vegans can obtain it from manufactured fortified foods (including
plant-based A plant-based diet is a diet consisting mostly or entirely of plant-based foods. It encompasses a wide range of dietary patterns that contain low amounts of animal products and high amounts of fiber-rich plant products such as vegetables, ...
products and
breakfast cereal Breakfast cereal is a category of food, including food products, made from food processing, processed cereal, cereal grains, that are eaten as part of breakfast or as a snack food, primarily in Western societies. Although warm, cooked cereals li ...
s) and dietary supplements. A strict vegan diet avoiding consumption of all animal products risks vitamin B12 deficiency, which can lead to
hyperhomocysteinemia Hyperhomocysteinemia is a medical condition characterized by an abnormally high level of total homocysteine (that is, including homocystine and homocysteine-cysteine disulfide) in the blood, conventionally described as above 15 μmol/L. As ...
, a risk factor for several health disorders, including
anemia Anemia (also spelt anaemia in British English) is a blood disorder in which the blood has a reduced ability to carry oxygen. This can be due to a lower than normal number of red blood cells, a reduction in the amount of hemoglobin availabl ...
, neurological deficits,
gastrointestinal The gastrointestinal tract (GI tract, digestive tract, alimentary canal) is the tract or passageway of the digestive system that leads from the mouth to the anus. The tract is the largest of the body's systems, after the cardiovascular system. ...
problems,
platelet Platelets or thrombocytes () are a part of blood whose function (along with the coagulation#Coagulation factors, coagulation factors) is to react to bleeding from blood vessel injury by clumping to form a thrombus, blood clot. Platelets have no ...
disorders, and increased risk for
cardiovascular diseases Cardiovascular disease (CVD) is any disease involving the heart or blood vessels. CVDs constitute a class of diseases that includes: coronary artery diseases (e.g. angina, heart attack), heart failure, hypertensive heart disease, rheuma ...
. The recommended daily dietary intake of B12 in the United States and Canada is 0.4
mcg The Melbourne Cricket Ground (MCG), also known locally as the 'G, is a sports stadium located in Yarra Park, Melbourne, Victoria. Founded and managed by the Melbourne Cricket Club, it is the largest stadium in the Southern Hemisphere, the el ...
(ages 0–6 months), rising to 1.8 mcg (9–13 years), 2.4 mcg (14+ years), and 2.8 mcg (lactating female). While the body's daily requirement for vitamin B12 is in
microgram In the metric system, a microgram or microgramme is a unit of mass equal to one millionth () of a gram. The unit symbol is μg according to the International System of Units (SI); the recommended symbol in the United States and United Kingdom wh ...
amounts, deficiency of the vitamin through strict practice of a vegetarian diet without supplementation can increase the risk of several chronic diseases.


Fatty acids

Plant-based, or vegetarian, sources of
Omega 3 Omega−3 fatty acids, also called omega−3 oils, ω−3 fatty acids or ''n''−3 fatty acids, are polyunsaturated fatty acids (PUFAs) characterized by the presence of a double bond three atoms away from the terminal methyl group in their c ...
fatty acids include
soy The soybean, soy bean, or soya bean (''Glycine max'') is a species of legume native to East Asia, widely grown for its edible bean. Soy is a staple crop, the world's most grown legume, and an important animal feed. Soy is a key source of f ...
,
walnut A walnut is the edible seed of any tree of the genus '' Juglans'' (family Juglandaceae), particularly the Persian or English walnut, '' Juglans regia''. They are accessory fruit because the outer covering of the fruit is technically an i ...
s, pumpkin seeds,
canola oil Close-up of canola blooms Canola flower Rapeseed oil is one of the oldest known vegetable oils. There are both edible and industrial forms produced from rapeseed, the seed of several cultivars of the plant family Brassicaceae. Historical ...
,
kiwifruit Kiwifruit (often shortened to kiwi), or Chinese gooseberry, is the edible berry (botany), berry of several species of woody vines in the genus ''Actinidia''. The most common cultivar group of kiwifruit (Actinidia chinensis var. deliciosa, ...
,
hempseed Hemp, or industrial hemp, is a plant in the botanical class of ''Cannabis sativa'' cultivars grown specifically for industrial and consumable use. It can be used to make a wide range of products. Along with bamboo, hemp is among the fastest ...
,
algae Algae ( , ; : alga ) is an informal term for any organisms of a large and diverse group of photosynthesis, photosynthetic organisms that are not plants, and includes species from multiple distinct clades. Such organisms range from unicellular ...
,
chia seed Chia seeds ( ) are the edible seeds of ''Salvia hispanica'', a flowering plant in the Mentha, mint family (Lamiaceae) native to central and southern Mexico, or of the related ''Salvia columbariae'', ''Salvia polystachia'', or ''Salvia tiliifolia' ...
,
flaxseed Flax, also known as common flax or linseed, is a flowering plant, ''Linum usitatissimum'', in the family Linaceae. It is cultivated as a food and fiber crop in regions of the world with temperate climates. In 2022, France produced 75% of the ...
, echium seed and
leafy vegetables Leaf vegetables, also called leafy greens, vegetable greens, or simply greens, are plant leaves eaten as a vegetable, sometimes accompanied by their petioles and shoots, if tender. Leaf vegetables eaten raw in a salad can be called salad gree ...
such as lettuce,
spinach Spinach (''Spinacia oleracea'') is a leafy green flowering plant native to Central Asia, Central and Western Asia. It is of the order Caryophyllales, family Amaranthaceae, subfamily Chenopodioideae. Its leaves are a common vegetable consumed eit ...
,
cabbage Cabbage, comprising several cultivars of '' Brassica oleracea'', is a leafy green, red (purple), or white (pale green) biennial plant grown as an annual vegetable crop for its dense-leaved heads. It is descended from the wild cabbage ( ''B.& ...
and
purslane Purslane is a common name for several mostly unrelated plants with edible leaves and may refer to: * Portulacaceae, a family of succulent flowering plants, and especially: ** '' Portulaca oleracea'', a species of ''Portulaca'' eaten as a leaf vege ...
. Purslane contains more Omega 3 than any other known leafy green.
Olive The olive, botanical name ''Olea europaea'' ("European olive"), is a species of Subtropics, subtropical evergreen tree in the Family (biology), family Oleaceae. Originating in Anatolia, Asia Minor, it is abundant throughout the Mediterranean ...
s (and
olive oil Olive oil is a vegetable oil obtained by pressing whole olives (the fruit of ''Olea europaea'', a traditional Tree fruit, tree crop of the Mediterranean Basin) and extracting the oil. It is commonly used in cooking for frying foods, as a cond ...
) are another important plant source of unsaturated fatty acids. Plant foods can provide alpha-linolenic acid which the human body uses to synthesize the long-chain n-3 fatty acids EPA and DHA. EPA and DHA can be obtained directly in high amounts from oily fish, fish oil, or algae oil. Vegetarians, and particularly vegans, have lower levels of EPA and DHA than meat-eaters. While the health effects of low levels of EPA and DHA are unknown, it is unlikely that supplementation with alpha-linolenic acid will significantly increase levels.. Significantly, for vegetarians, certain
algae Algae ( , ; : alga ) is an informal term for any organisms of a large and diverse group of photosynthesis, photosynthetic organisms that are not plants, and includes species from multiple distinct clades. Such organisms range from unicellular ...
such as spirulina are good sources of gamma-linolenic acid (GLA), alpha-linolenic acid (ALA),
linoleic acid Linoleic acid (LA) is an organic compound with the formula . Both alkene groups () are ''cis''. It is a fatty acid sometimes denoted 18:2 (n−6) or 18:2 ''cis''-9,12. A linoleate is a salt or ester of this acid. Linoleic acid is a polyunsat ...
(LA), stearidonic acid (SDA),
eicosapentaenoic acid Eicosapentaenoic acid (EPA; also icosapentaenoic acid) is an omega−3 fatty acid. In physiological literature, it is given the name 20:5(''n''−3). It also has the trivial name timnodonic acid. In chemical structure, EPA is a carboxylic acid wi ...
(EPA),
docosahexaenoic acid Docosahexaenoic acid (DHA) is an omega−3 fatty acid that is an important component of the human brain, cerebral cortex, skin, and retina. It is given the fatty acid notation 22:6(''n''−3). It can be synthesized from alpha-linolenic acid or ...
(DHA), and
arachidonic acid Arachidonic acid (AA, sometimes ARA) is a polyunsaturated omega−6 fatty acid 20:4(ω−6), or 20:4(5,8,11,14). It is a precursor in the formation of leukotrienes, prostaglandins, and thromboxanes. Together with omega−3 fatty acids an ...
(AA).


Calcium

Calcium Calcium is a chemical element; it has symbol Ca and atomic number 20. As an alkaline earth metal, calcium is a reactive metal that forms a dark oxide-nitride layer when exposed to air. Its physical and chemical properties are most similar to it ...
intake in vegetarians and vegans can be similar to non-vegetarians, as long as the diet is properly planned. Lacto-ovo vegetarians that include dairy products can still obtain calcium from dairy sources like milk, yogurt, and cheese. Non-dairy milks that are fortified with calcium, such as soymilk and
almond milk Almond milk is a plant-based milk substitute with a watery texture and nutty flavor manufactured from almonds, although some types or brands are flavored in imitation of cow's milk. It does not contain cholesterol or lactose and is low in saturat ...
can also contribute a significant amount of calcium in the diet.
Broccoli Broccoli (''Brassica oleracea'' var. ''italica'') is an edible green plant in the Brassicaceae, cabbage family (family Brassicaceae, genus ''Brassica'') whose large Pseudanthium, flowering head, plant stem, stalk and small associated leafy gre ...
,
bok choy Bok choy (American English, Canadian English, and Australian English), pak choi (British English, South African English, and Caribbean English) or pok choi is a type of Chinese cabbage ('' Brassica rapa'' subsp. ''chinensis'') cultivated as a le ...
, and
kale Kale (), also called leaf cabbage, belongs to a group of cabbage (''Brassica oleracea'') cultivars primarily grown for their Leaf vegetable, edible leaves; it has also been used as an ornamental plant. Its multiple different cultivars vary quite ...
have also been found to have calcium that is well absorbed in the body. Though the calcium content per serving is lower in these vegetables than a glass of milk, the absorption of the calcium into the body is higher. Other foods that contain calcium include calcium-set tofu, blackstrap molasses,
turnip greens The turnip or white turnip (''Brassica rapa'' subsp. ''rapa'') is a root vegetable commonly grown in temperate climates worldwide for its white, fleshy taproot. Small, tender varieties are grown for human consumption, while larger varieties ar ...
, mustard greens, soybeans, tempeh, almonds, okra, dried figs, and
tahini Tahini () (, or in Iraq: (rashi-راشي)) is a Middle Eastern condiment (a seed butter) made from ground sesame seeds. The most common variety comes from hulled seeds, but unhulled ones can also be used; the latter variety is slightly bitter, ...
. Though calcium can be found in
Spinach Spinach (''Spinacia oleracea'') is a leafy green flowering plant native to Central Asia, Central and Western Asia. It is of the order Caryophyllales, family Amaranthaceae, subfamily Chenopodioideae. Its leaves are a common vegetable consumed eit ...
,
swiss chard Chard (; ''Beta vulgaris'' subsp. ''vulgaris'', Cicla Group and Flavescens Group) is a green leafy vegetable. In the cultivars of the Flavescens Group, or Swiss chard, the leaf stalks are large and often prepared separately from the leaf bl ...
,
bean A bean is the seed of some plants in the legume family (Fabaceae) used as a vegetable for human consumption or animal feed. The seeds are often preserved through drying (a ''pulse''), but fresh beans are also sold. Dried beans are traditi ...
s and
beet greens The beetroot (British English) or beet (North American English) is the taproot portion of a ''Beta vulgaris'' subsp. ''vulgaris'' plant in the Conditiva Group. The plant is a root vegetable also known as the table beet, garden beet, dinner be ...
, they are generally not considered to be a good source since the calcium binds to oxalic acid and is poorly absorbed into the body. Phytic acid found in nuts, seeds, and beans may also impact calcium absorption rates. See the National Institutes of Health Office of Dietary Supplements for calcium needs for various ages, the Vegetarian Resource Group and the Vegetarian Nutrition Calcium Fact Sheet from the Academy of Nutrition and Dietetics for more specifics on how to obtain adequate calcium intake on a vegetarian or vegan diet.


Vitamin D

Vitamin D needs can be met via the human body's own generation upon sufficient and sensible exposure to ultraviolet (UV) light in sunlight. Products including milk,
soy milk Soy milk (or soymilk), also known as soya milk, is a plant-based milk produced by soaking and grinding soybeans, boiling the mixture, and filtering out remaining particulates. It is a stable emulsion of oil, water, and protein. Its original ...
and
cereal grain A cereal is a grass cultivated for its edible grain. Cereals are the world's largest crops, and are therefore staple foods. They include rice, wheat, rye, oats, barley, millet, and maize (Corn). Edible grains from other plant families, suc ...
s may be
fortified A fortification (also called a fort, fortress, fastness, or stronghold) is a military construction designed for the defense of territories in warfare, and is used to establish rule in a region during peacetime. The term is derived from Lat ...
to provide a source of vitamin D. For those who do not get adequate sun exposure or food sources, vitamin D supplementation may be necessary.


Vitamin D2

*
Plants Plants are the eukaryotes that form the kingdom Plantae; they are predominantly photosynthetic. This means that they obtain their energy from sunlight, using chloroplasts derived from endosymbiosis with cyanobacteria to produce sugars f ...
**
Alfalfa Alfalfa () (''Medicago sativa''), also called lucerne, is a perennial plant, perennial flowering plant in the legume family Fabaceae. It is cultivated as an important forage crop in many countries around the world. It is used for grazing, hay, ...
(''Medicago sativa subsp. sativa''), shoot: 4.8 μg (192 IU) vitamin D2, 0.1 μg (4 IU) vitamin D3 *
Fungus A fungus (: fungi , , , or ; or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and mold (fungus), molds, as well as the more familiar mushrooms. These organisms are classified as one ...
, from USDA nutrient database, per 100 g: ** Mushrooms, portabella, exposed to
ultraviolet light Ultraviolet radiation, also known as simply UV, is electromagnetic radiation of wavelengths of 10–400 nanometers, shorter than that of visible light, but longer than X-rays. UV radiation is present in sunlight and constitutes about 10% of th ...
, raw: Vitamin D2: 11.2 μg (446 IU) ** Mushrooms, portabella, exposed to ultraviolet light, grilled: Vitamin D2: 13.1 μg (524 IU) ** Mushrooms, shiitake, dried: Vitamin D2: 3.9 μg (154 IU) ** Mushrooms, shiitake, raw: Vitamin D2: 0.4 μg (18 IU) ** Mushrooms, portabella, raw: Vitamin D2: 0.3 μg (10 IU) ** Mushroom powder, any species, illuminated with sunlight or artificial ultraviolet light sources Vitamin D2, or
ergocalciferol Ergocalciferol, also known as vitamin D2 and nonspecifically calciferol, is a type of vitamin D found in food. It is used as a dietary supplement to prevent and treat vitamin D deficiency due to poor absorption by the intestines or liver dis ...
is found in fungus (except
alfalfa Alfalfa () (''Medicago sativa''), also called lucerne, is a perennial plant, perennial flowering plant in the legume family Fabaceae. It is cultivated as an important forage crop in many countries around the world. It is used for grazing, hay, ...
which is a
plantae Plants are the eukaryotes that form the kingdom Plantae; they are predominantly photosynthetic. This means that they obtain their energy from sunlight, using chloroplasts derived from endosymbiosis with cyanobacteria to produce sugars fro ...
) and created from
viosterol Ergocalciferol, also known as vitamin D2 and nonspecifically calciferol, is a type of vitamin D found in food. It is used as a dietary supplement to prevent and treat vitamin D deficiency due to poor absorption by the intestines or liver dise ...
, which in turn is created when ultraviolet light activates
ergosterol Ergosterol (ergosta-5,7,22-trien-3β-ol) is a mycosterol found in cell membranes of fungi and protozoa, serving many of the same functions that cholesterol serves in animal cells. Because many fungi and protozoa cannot survive without ergostero ...
(which is found in fungi and named as a
sterol A sterol is any organic compound with a Skeletal formula, skeleton closely related to Cholestanol, cholestan-3-ol. The simplest sterol is gonan-3-ol, which has a formula of , and is derived from that of gonane by replacement of a hydrogen atom on ...
from
ergot Ergot ( ) or ergot fungi refers to a group of fungi of the genus ''Claviceps''. The most prominent member of this group is '' Claviceps purpurea'' ("rye ergot fungus"). This fungus grows on rye and related plants, and produces alkaloids that c ...
). Any UV-irradiated fungus including
yeast Yeasts are eukaryotic, single-celled microorganisms classified as members of the fungus kingdom (biology), kingdom. The first yeast originated hundreds of millions of years ago, and at least 1,500 species are currently recognized. They are est ...
form vitamin D2. Human bioavailability of vitamin D2 from vitamin D2-enhanced button mushrooms via UV-B irradiation is effective in improving vitamin D status and not different from a vitamin D2 supplement according to study. For example, vitamin D2 from UV-irradiated yeast baked into bread is bioavailable. By visual assessment or using a chromometer, no significant discoloration of irradiated mushrooms, as measured by the degree of "whiteness", was observed making it hard to discover if they have been treated without labeling. Claims have been made that a normal serving (approx. 3 oz or 1/2 cup, or 60 grams) of mushrooms treated with ultraviolet light increase their vitamin D content to levels up to 80 micrograms, or 2700 IU if exposed to just 5 minutes of UV light after being harvested.


Choline

Choline Choline is a cation with the chemical formula . Choline forms various Salt (chemistry), salts, such as choline chloride and choline bitartrate. An essential nutrient for animals, it is a structural component of phospholipids and cell membrane ...
is a nutrient that helps transfer signals between nerve cells and is involved in liver function. It is highest in dairy foods and meat but it is possible to be obtained through a vegan diet.


Ethics and diet


General

With regard to the ethics of eating meat, scholars consider vegetarianism an
ideology An ideology is a set of beliefs or values attributed to a person or group of persons, especially those held for reasons that are not purely about belief in certain knowledge, in which "practical elements are as prominent as theoretical ones". Form ...
and a
social movement A social movement is either a loosely or carefully organized effort by a large group of people to achieve a particular goal, typically a Social issue, social or Political movement, political one. This may be to carry out a social change, or to re ...
. Ethical reasons for choosing vegetarianism vary and are usually predicated on the interests of
non-human animals Personhood is the status of being a person. Defining personhood is a controversial topic in philosophy and law and is closely tied with legal and political concepts of citizenship, equality, and liberty. According to law, only a legal person (eit ...
. In many societies, controversies and debates have arisen over the ethics of eating animals. Some people, while not vegetarians, refuse to eat the flesh of certain animals due to cultural
taboo A taboo is a social group's ban, prohibition or avoidance of something (usually an utterance or behavior) based on the group's sense that it is excessively repulsive, offensive, sacred or allowed only for certain people.''Encyclopædia Britannica ...
, such as cats, dogs, horses or rabbits. Others support meat eating for scientific, nutritional and cultural reasons, including religious ones. Some meat eaters abstain from the meat of animals reared in particular ways, such as factory farms, or avoid certain meats, such as
veal Veal is the meat of Calf (animal), calves, in contrast to the beef from older cattle. Veal can be produced from a calf of either sex and any List of cattle breeds, breed; however, most veal comes from young male calves of Dairy cattle, dairy b ...
or
foie gras ; (, ) is a specialty food product made of the liver of a Domestic duck, duck or Domestic goose, goose. According to French law, ''foie gras'' is defined as the liver of a duck or goose fattened by ''gavage'' (force feeding). ''Foie gras'' i ...
. Some people follow vegetarian or
vegan Veganism is the practice of abstaining from the use of animal products and the consumption of animal source foods, and an associated philosophy that rejects the commodity status of animals. A person who practices veganism is known as a ve ...
diets not because of moral concerns involving the raising or consumption of animals in general, but because of concerns about the specific treatment and practices involved in the processing of animals for food. Others still avoid meat out of concern that meat production places a greater burden on the environment than production of an equivalent amount of plant
protein Proteins are large biomolecules and macromolecules that comprise one or more long chains of amino acid residue (biochemistry), residues. Proteins perform a vast array of functions within organisms, including Enzyme catalysis, catalysing metab ...
. Ethical objections based on consideration for animals are generally divided into opposition to the act of killing in general, and opposition to certain
agricultural practices Agriculture encompasses crop and livestock production, aquaculture, and forestry for food and non-food products. Agriculture was a key factor in the rise of sedentary human civilization, whereby farming of domesticated species created food ...
surrounding the
production Production may refer to: Economics and business * Production (economics) * Production, the act of manufacturing goods * Production, in the outline of industrial organization, the act of making products (goods and services) * Production as a stat ...
of meat.


Ethics of killing for food

Ethical vegetarians believe that killing an animal, like killing a human, especially one who has equal or lesser cognitive abilities than the animals in question, can only be justified in extreme circumstances and that consuming a living creature for its enjoyable taste, convenience, or
nutrition Nutrition is the biochemistry, biochemical and physiology, physiological process by which an organism uses food and water to support its life. The intake of these substances provides organisms with nutrients (divided into Macronutrient, macro- ...
value is not a sufficient cause. Another common view is that humans are morally conscious of their behavior in a way other animals are not, and therefore subject to higher standards. Jeff McMahan proposes that denying the right to life and humane treatment to animals with equal or greater cognitive abilities than mentally disabled humans is an arbitrary and discriminatory practice based on habit instead of logic. Opponents of ethical vegetarianism argue that animals are not moral equals to humans and so consider the comparison of eating livestock with killing people to be fallacious. This view does not excuse cruelty, but maintains that animals do not possess the rights a human has.


Dairy and eggs

One of the main differences between a
vegan Veganism is the practice of abstaining from the use of animal products and the consumption of animal source foods, and an associated philosophy that rejects the commodity status of animals. A person who practices veganism is known as a ve ...
and a lacto-ovo vegetarian diet is the avoidance of both
eggs An egg is an organic vessel in which an embryo begins to develop. Egg, EGG or eggs may also refer to: Biology * Egg cell, the female reproductive cell (gamete) in oogamous organisms Food * Eggs as food Places * Egg, Austria * Egg, Switzerland ...
and
dairy product Dairy products or milk products are food products made from (or containing) milk. The most common dairy animals are cow, water buffalo, goat, nanny goat, and Sheep, ewe. Dairy products include common grocery store food around the world such as y ...
s such as milk, cheese, butter and yogurt. Ethical vegans do not consume dairy or eggs because they state that their production causes the animal suffering or a premature death. To produce milk from
dairy cattle Dairy cattle (also called dairy cows) are cattle bred with the ability to produce large quantities of milk, from which dairy products are made. Dairy cattle generally are of the species '' Bos taurus''. Historically, little distinction was ...
, farmers separate calves from their mothers soon after birth to retain cow milk for human consumption.


Treatment of animals

Ethical vegetarianism Conversations regarding the ethics of eating meat are focused on whether or not it is moral to eat non-human animals. People who abstain from eating meat are generally known as " vegetarians" and people who avoid all animal by-products are known ...
has become popular in developed countries particularly because of the spread of
factory farming Intensive animal farming, industrial livestock production, and macro-farms, also known as factory farming, is a type of intensive agriculture, specifically an approach to mass animal husbandry designed to maximize production while minimizing co ...
and environmental consciousness. Some believe that the current mass-demand for meat cannot be satisfied without a mass-production system that disregards the welfare of animals, while others believe that practices like well-managed
free-range Free range denotes a method of farming husbandry where the animals can roam freely outdoors for at least part of the day, rather than being confined in an enclosure for 24 hours each day. On many farms, the outdoors ranging area is fenced, t ...
farming or the consumption of
game A game is a structured type of play usually undertaken for entertainment or fun, and sometimes used as an educational tool. Many games are also considered to be work (such as professional players of spectator sports or video games) or art ...
(particularly from species whose natural predators have been significantly eliminated) could substantially alleviate consumer demand for mass-produced meat.


Religion and diet

Jainism Jainism ( ), also known as Jain Dharma, is an Indian religions, Indian religion whose three main pillars are nonviolence (), asceticism (), and a rejection of all simplistic and one-sided views of truth and reality (). Jainism traces its s ...
teaches vegetarianism as moral conduct, as do some sects of
Hinduism Hinduism () is an Hypernymy and hyponymy, umbrella term for a range of Indian religions, Indian List of religions and spiritual traditions#Indian religions, religious and spiritual traditions (Sampradaya, ''sampradaya''s) that are unified ...
. Buddhism in general does not prohibit meat eating, but
Mahayana Buddhism Mahāyāna ( ; , , ; ) is a term for a broad group of Buddhist traditions, texts, philosophies, and practices developed in ancient India ( onwards). It is considered one of the three main existing branches of Buddhism, the others being Thera ...
encourages vegetarianism as beneficial for developing compassion. Other denominations that advocate a vegetarian diet include the Seventh-day Adventist Church, Seventh-day Adventists, the Rastafari movement, the Ananda Marga movement and the Hare Krishnas. Sikhism does not equate spirituality with diet and does not specify a vegetarian or meat diet.


Baháʼí Faith

While there are no dietary restrictions in the Baháʼí Faith, `Abdu'l-Bahá, the son of the religion's founder, noted that a vegetarian diet consisting of fruits and grains was desirable, except for people with a weak constitution or those that are sick. He stated that there are no requirements that Baháʼís become vegetarian, but that a future society should gradually become vegetarian. `Abdu'l-Bahá also stated that killing animals was contrary to compassion. While Shoghi Effendi, the head of the Bahá'í Faith in the first half of the 20th century, stated that a purely vegetarian diet would be preferable since it avoided killing animals, both he and the Universal House of Justice, the governing body of the Baháʼís have stated that these teachings do not constitute a Baháʼí practice and that Baháʼís can choose to eat whatever they wish but should be respectful of others' beliefs.


Buddhism

Theravadins in general eat meat. If Buddhist monks "see, hear or know" a living animal was killed specifically for them to eat, they must refuse it or else incur an offense. However, this does not include eating meat which was given as alms or commercially purchased. In the Theravada canon, Shakyamuni Buddha did not make any comment discouraging them from eating meat (except specific types, such as human, elephant meat, elephant, Horse meat, horse, Dog meat, dog, Snake meat, snake, lion, tiger, leopard, Bear meat, bear, and hyena flesh) but he specifically refused to institute vegetarianism in his monastic code when a suggestion had been made. In several Sanskrit texts of Mahayana Buddhism, Buddha instructs his followers to avoid meat. However, each branch of Mahayana Buddhism selects which sutra to follow, and some branches, including the majority of Tibetan and Japanese Buddhists, actually do eat meat. Meanwhile, Chinese, Korean, Vietnamese Buddhism (in some sectors of East Asian Buddhism) monks and nuns are expected to abstain from meat, and traditionally, to abstain from eggs and dairy as well. Different Buddhist traditions have differing teachings on diet, which may also vary for ordained monks and nuns compared to others. Many interpret the Five Precepts, precept "not to kill" to require abstinence from meat, but not all. In Taiwan, ''su'' vegetarianism excludes not only all animal products but also vegetables in the
allium ''Allium'' is a large genus of monocotyledonous flowering plants with around 1000 accepted species, making ''Allium'' the largest genus in the family Amaryllidaceae and among the largest plant genera in the world. Many of the species are edible, ...
family (which have the characteristic aroma of onion and garlic): onion, garlic, scallions, leeks, chives, or shallots.


Christianity

Various groups within Christianity have practiced specific dietary restrictions for various reasons. The Council of Jerusalem in around 50 AD, recommended Christians keep following some of the Jewish food laws concerning meat. The early sect known as the Ebionites are considered to have practiced vegetarianism. Surviving fragments from their Gospel of the Ebionites#Vegetarianism, Gospel indicate their belief that – as Christ is the Passover sacrifice and eating the Passover lamb is no longer required – a vegetarian diet may (or should) be observed. However, orthodox Christianity does not accept their teaching as authentic. Indeed, their specific injunction to strict vegetarianism was cited as one of the Ebionites' "errors". At a much later time, the Bible Christian Church (vegetarian), Bible Christian Church founded by Reverend William Cowherd in 1809 followed a vegetarian diet. Cowherd was one of the philosophical forerunners of the
Vegetarian Society The Vegetarian Society of the United Kingdom (VSUK) is a British Registered charity in England, registered charity. It campaigns for dietary changes, licenses Vegetarian Society Approved trademarks for Vegetarianism, vegetarian and Veganism, v ...
.; Gregory, James (2007) ''Of Victorians and Vegetarians''. London: I. B. Tauris pp. 30–35. Cowherd encouraged members to abstain from eating of meat as a form of Temperance (virtue), temperance. Seventh-day Adventist Church, Seventh-day Adventists are encouraged to engage in healthy eating practices, and lacto-ovo-vegetarian diets are recommended by the General Conference of Seventh-day Adventists Nutrition Council (GCNC). They have also sponsored and participated in many scientific studies exploring the impact of dietary decisions upon health outcomes. The GCNC has in addition adapted the United States Department of Agriculture, USDA's Food guide pyramid#USDA food pyramid, food pyramid for a vegetarian dietary approach. However, the only kinds of meat specifically frowned upon by the SDA health message are unclean animals, unclean meats, or those forbidden in scripture. Additionally, some monastic orders follow a pescatarian diet, and members of the Eastern Orthodox Church follow a vegan diet during fasts. There is also a strong association between the Quakers and vegetarianism dating back at least to the 18th century. The association grew in prominence during the 19th century, coupled with growing Quaker concerns in connection with alcohol consumption, anti-vivisection and social purity. The association between the Quaker tradition and vegetarianism, however, becomes most significant with the founding of the Friends' Vegetarian Society in 1902 "to spread a kindlier way of living amongst the Society of Friends."


Seventh-day Adventist

The Seventh-day Adventist Church is well known for presenting a health message that recommends Christian vegetarianism, vegetarianism and expects adherence to the Kashrut, kosher laws in Leviticus 11. Obedience to these laws means abstinence from pork, shellfish, and other animals proscribed as "unclean animals, unclean". The church discourages its members from consuming alcoholic beverages, tobacco or illegal drugs (compare Christianity and alcohol). In addition, some Adventists avoid coffee, tea, cola, and other beverages containing caffeine. The pioneers of the Adventist Church had much to do with the common acceptance of
breakfast cereal Breakfast cereal is a category of food, including food products, made from food processing, processed cereal, cereal grains, that are eaten as part of breakfast or as a snack food, primarily in Western societies. Although warm, cooked cereals li ...
s into the Western diet, and the "modern commercial concept of cereal food" originated among Adventists. John Harvey Kellogg was one of the early founders of Adventist health work. His development of breakfast cereals as a health food led to the founding of Kellogg Company, Kellogg's by his brother William K. Kellogg, William. In both Australia and
New Zealand New Zealand () is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and List of islands of New Zealand, over 600 smaller islands. It is the List of isla ...
, the church-owned Sanitarium Health and Wellbeing Company is a leading manufacturer of health and vegetarian-related products, most prominently Weet-Bix. Kellogg encouraged his students Daniel H. Kress and Lauretta E. Kress to study medicine together at the University of Michigan Medical School and become public advocates of vegetarianism; together they published an important vegetarian cookbook and became early founders of what was later Washington Adventist Hospital. Research funded by the U.S. National Institutes of Health has shown that the average Adventist in California lives 4 to 10 years longer than the average Californian. Adventist Health Studies, The research, as cited by the cover story of the November 2005 issue of ''National Geographic (magazine), National Geographic'', asserts that Adventists live longer because they do not smoke or drink alcohol, have a day of rest every week, and maintain a healthy, low-fat vegetarian diet that is rich in nuts and beans. The cohesiveness of Adventists' social networks has also been put forward as an explanation for their extended lifespan. Since Dan Buettner's 2005 ''National Geographic (magazine), National Geographic'' story about Adventist longevity, his book, ''The Blue Zones: Lessons for Living Longer From the People Who've Lived the Longest'', named
Loma Linda, California Loma Linda ( Spanish for "Beautiful Hill") is a city in San Bernardino County, California, United States, that was incorporated in 1970. The population was 24,791 at the 2020 census, up from 23,261 at the 2010 census. The central area of the ...
, a "Blue Zone, blue zone" because of the large concentration of Seventh-day Adventists. He cites the Adventist emphasis on health, diet, and Sabbath-keeping as primary factors for Adventist longevity. An estimated 35% of Adventists practice vegetarianism or veganism, according to a 2002 worldwide survey of local church leaders. North American Adventist health study recruitments from 2001 to 2007 found a similar prevalence of vegetarianism/veganism. A small majority of Adventists, 54%, were conventional meat-eaters. Of the remaining 46% it was found that 28% were Ovo vegetarianism, Ovo/Lacto vegetarianism, Lacto-Lacto-ovo vegetarianism, vegetarians, 10% were Pescetarianism, Pesco-vegetarians and 8% were vegans. It is common for Adventists who choose to eat meat to also eat plant-based foods; 6% of the "meat-eaters" group restricted their intake of meat/fish to no more than once per week.


Hinduism

Though there is no strict rule on what to consume and what not to, the food habits of Hindus vary according to their specific caste and sub-caste, community, location, custom and varying traditions. Historically and currently, a majority of Hindus (about 70%) eat meat, while a large proportion of Hindus are vegetarian (about 30%). Some sects of
Hinduism Hinduism () is an Hypernymy and hyponymy, umbrella term for a range of Indian religions, Indian List of religions and spiritual traditions#Indian religions, religious and spiritual traditions (Sampradaya, ''sampradaya''s) that are unified ...
such as Vaishnavism follow the purest form of vegetarianism as an ideal while Shaktism and Tantric hinduism, Tantric sects freely consume chicken, mutton (goat and sheep meat), fish and eggs. The reasons stated by Jains and Vaishnavas are: the principle of nonviolence (''
ahimsa (, IAST: , ) is the ancient Indian principle of nonviolence which applies to actions towards all living beings. It is a key virtue in Indian religions like Jainism, Buddhism and Hinduism. (also spelled Ahinsa) is one of the cardinal vi ...
'') applied to animals; the intention to offer only "pure" (vegetarian) food to a deity and then to receive it back as ''prasada''; and the conviction that a sattvic diet, ''sattvic'' diet is beneficial for a healthy body. A ''sattvic'' diet is Lacto vegetarianism, lacto-vegetarian, which includes dairy, but excludes eggs. An overwhelming majority of the Hindus consider the cow to be a holy and sacred animal whose Cattle slaughter in India, slaughter for meat is forbidden. Thus, beef is a taboo for the majority of Hindus, Jains and Sikhs


Islam

Some followers of Islam, or Muslims, chose to be vegetarian for health, ethical, or personal reasons. However, the choice to become vegetarian for non-medical reasons can sometimes be controversial due to conflicting fatwas and differing interpretations of the Quran. Though some more traditional Muslims may keep quiet about their vegetarian diet, the number of vegetarian Muslims is increasing. Sri Lankan Sufi master Bawa Muhaiyaddeen, who established The Bawa Muhaiyaddeen Fellowship of North America in Philadelphia. The former President of India, Indian president Dr. A. P. J. Abdul Kalam was also famously a vegetarian. In January 1996, The International Vegetarian Union announced the formation of the Muslim Vegetarian/Vegan Society. Many non-vegetarian Muslims will select vegetarian (or seafood) options when dining in non-halal restaurants. However, this is a matter of not having the right kind of meat rather than preferring not to eat meat on the whole.


Jainism

Followers of
Jainism Jainism ( ), also known as Jain Dharma, is an Indian religions, Indian religion whose three main pillars are nonviolence (), asceticism (), and a rejection of all simplistic and one-sided views of truth and reality (). Jainism traces its s ...
believe that all living organisms, including microorganisms, are living and have a soul, and have one or more senses out of five senses. They go to great lengths to minimise any harm to any living organism. Most Jains are lacto-vegetarians, but more devout Jains do not eat root vegetables, because they believe that root vegetables contain many more microorganisms as compared to other vegetables, and that, by eating them, violence against these microorganisms is inevitable. They therefore prefer eating beans and fruits, whose cultivation involves killing fewer microorganisms. No products obtained from already-dead animals are allowed because of potential violence against decomposing microorganisms. Some particularly dedicated individuals are fruitarianism, fruitarians. Honey is forbidden, being the regurgitation of nectar by bees and potentially containing eggs, excreta and dead bees. Many Jains do not consume plant parts that grow underground such as roots and bulbs, because the plants themselves and tiny animals may be killed when the plants are pulled up.


Judaism

While classical Jewish law neither requires nor prohibits the consumption of meat, Jewish vegetarians often cite Jewish principles regarding Jewish ethics#Treatment of animals, animal welfare, Jewish ethics#Environmental ethics, environmental ethics, moral character, and Jewish ethics#Health and self-respect, health as reasons for adopting a vegetarian or vegan diet. Rabbis may advocate vegetarianism or veganism primarily because of concerns about animal welfare, especially in light of the traditional prohibition on causing unnecessary "pain to living creatures" (Tza'ar ba'alei chayim, tza'ar ba'alei hayyim). Some Jewish vegetarian groups and activists believe that the halakha, halakhic permission to eat meat is a temporary leniency for those who are not ready yet to accept the vegetarian diet. The book of Daniel starts in its first chapter with the benefits of vegetarianism. Due to its size, its late time of origin and its revealing content, the book is of particular importance for the time of the following exile, which lasts now for 2000 years and technically still goes on until the Temple in Jerusalem is rebuilt. A diet described as "pulse and water" is presented along benefits such as accordance with the biblical dietary laws, health, beauty, wisdom and vision. Vegetarianism can be seen as a safeguard around the dietary laws or the beautification of them. Jewish vegetarianism and veganism have become especially popular among Israeli Jews. In 2016, Israel was described as "the most vegan country on Earth", as five percent of its population eschewed all animal products. Interest in veganism has grown among both non-Orthodox and Orthodox Jews in Israel.


Rastafari

Within the Afro-Caribbean community, a minority are Rastafari movement, Rastafari and follow the dietary regulations with varying degrees of strictness. The most orthodox eat only "Ital" or natural foods, in which the matching of herbs or spices with vegetables is the result of long tradition originating from the African ancestry and cultural heritage of Rastafari. "Ital", which is derived from the word vital, means essential to human existence. Ital cooking in its strictest form prohibits the use of salt, meat (especially pork), preservatives, colorings, flavorings and anything artificial. Most Rastafari are vegetarian.


Sikhism

The tenets of Sikhism do not advocate a particular stance on either vegetarianism or the consumption of meat,Gopal Singh, ''History of the Sikh People'', World Sikh Univ. Press, Delhi, : "Nowadays in the Community Kitchen attached to the Sikh temples, and called the Guru's Kitchen (or ''Guru-ka-langar''), meat dishes are not served at all. Maybe it is on account of its being, perhaps, expensive or not easy to keep for long. Or perhaps the Vaishnava tradition is too strong to be shaken off." but leave the decision of diet to the individual.Randip Singh,
Fools Who Wrangle Over Flesh
'', Sikh Philosophy Network, December 7, 2006. Retrieved January 15, 2010.
The tenth guru, Guru Gobind Singh, however, prohibited "Amritdhari" Sikhs, or those that follow the Sikh Rehat Maryada (the Official Sikh Code of Conduct) from eating Kutha meat, or meat which has been obtained from animals which have been killed in a ritualistic way. This is understood to have been for the political reason of maintaining independence from the then-new Muslim hegemony, as Muslims largely adhere to the ritualistic halal diet. "Amritdharis" that belong to some Sikh sects (e.g. Akhand Kirtani Jatha, Damdami Taksal, Namdhari and Rarionwalay, etc.) are vehemently against the consumption of meat and eggs (though they do consume and encourage the consumption of milk, butter and cheese). This vegetarian stance has been traced back to the times of the British Raj, with the advent of many new Vaishnava converts. In response to the varying views on diet throughout the Sikh population, Sikh Gurus have sought to clarify the Sikh view on diet, stressing their preference only for simplicity of diet. Guru Nanak said that over-consumption of food (Lobh, Greed) involves a drain on the Earth's resources and thus on life. Passages from the ''Guru Granth Sahib'' (the holy book of Sikhs, also known as the ''Adi Granth'') say that it is "foolish" to argue for the superiority of animal life, because though all life is related, only human life carries more importance: "Only fools argue whether to eat meat or not. Who can define what is meat and what is not meat? Who knows where the sin lies, being a vegetarian or a non-vegetarian?" The Sikh Langar (Sikhism), langar, or free temple meal, is largely lacto-vegetarian, though this is understood to be a result of efforts to present a meal that is respectful of the diets of any person who would wish to dine, rather than out of dogma.


Environment and diet

Environmental vegetarianism is based on the concern that the production of meat and animal products for mass consumption, especially through
factory farming Intensive animal farming, industrial livestock production, and macro-farms, also known as factory farming, is a type of intensive agriculture, specifically an approach to mass animal husbandry designed to maximize production while minimizing co ...
, is environmentalism, environmentally sustainable development, unsustainable. According to a 2006 United Nations initiative, the livestock industry is one of the largest contributors to environmental degradation worldwide, and modern practices of raising animals for food contribute on a "massive scale" to air and water pollution, land degradation, climate change, and Biodiversity loss, loss of biodiversity. The initiative concluded that "the livestock sector emerges as one of the top two or three most significant contributors to the most serious environmental problems, at every scale from local to global." In addition, animal agriculture is a large source of greenhouse gases. According to a 2006 report it is responsible for 18% of the world's greenhouse gas emissions as estimated in 100-year CO2 equivalents. Livestock sources (including enteric fermentation and manure) account for about 3.1 percent of US anthropogenic GHG emissions expressed as carbon dioxide equivalents. This EPA estimate is based on methodologies agreed to by the Conference of Parties of the UNFCCC, with 100-year global warming potentials from the IPCC Second Assessment Report used in estimating GHG emissions as carbon dioxide equivalents. Meat produced in a laboratory (called in vitro meat) may be more environmentally sustainable than regularly produced meat. Reactions of vegetarians vary. Rearing a relatively small number of grazing animals can be beneficial, as the Food Climate Research Network at Surrey University reports: "A little bit of livestock production is probably a good thing for the environment". In May 2009, Ghent, Belgium, was reported to be "the first [city] in the world to go vegetarian at least once a week" for environmental reasons, when local authorities decided to implement a "weekly meatless day". Civil servants would eat vegetarian meals one day per week, in recognition of the United Nations' report. Posters were put up by local authorities to encourage the population to take part on vegetarian days, and "veggie street maps" were printed to highlight vegetarian restaurants. In September 2009, schools in Ghent are due to have a weekly ''veggiedag'' ("vegetarian day") too. Public opinion and acceptance of meat-free food is expected to be more successful if its descriptive words focus less on the health aspects and more on the flavor.


Labor conditions and diet

Some groups, such as PETA, promote vegetarianism as a way to offset poor treatment and working conditions of workers in the contemporary meat industry. These groups cite studies showing the psychological damage caused by working in the meat industry, especially in factory and industrialised settings, and argue that the meat industry violates its labourers' human rights by assigning difficult and distressing tasks without adequate counselling, training and debriefing.Positive Safety Culture. The key to a safer meat industry
, A literature review July 2000, safework.sa.gov.au
However, the working conditions of agricultural workers as a whole, particularly non-permanent workers, remain poor and well below conditions prevailing in other economic sectors. Accidents, including pesticide poisoning, among farmers and plantation workers contribute to increased health risks, including increased mortality. According to the International Labour Organization, agriculture is one of the three most dangerous jobs in the world.


Economics and diet

Some vegetarians are economic vegetarians who avoid meat due to cost considerations. Vegetarians also have an impact on the economy. In 2022, sales of vegetarian food in the UK was estimated at £1.16 billion. The US-based Plant Based Food Association found that the sales of plant-based foods in the U.S. alone amounts to $13.7 billion a year. Vegans have been found to influence the business at restaurants through what is referred to as the Veganism#Vegan veto vote, vegan veto vote.


Economic vegetarianism

Similar to environmental vegetarianism is the concept of economic vegetarianism. An economic vegetarian is someone who practices vegetarianism from either the philosophical viewpoint concerning issues such as public health and curbing world starvation, the belief that the consumption of meat is economically unsound, part of a conscious simple living strategy or just out of necessity. According to the Worldwatch Institute, "Massive reductions in meat consumption in industrial nations will ease their health care burden while improving public health; declining livestock herds will take pressure off rangelands and grainlands, allowing the agricultural resource base to rejuvenate. As populations grow, lowering meat consumption worldwide will allow more efficient use of declining per capita land and water resources, while at the same time making grain more affordable to the world's chronically hungry." According to estimates in 2016, adoption of vegetarianism would contribute substantially to global healthcare and environmental savings.


Demographics

Prejudice researcher Gordon Hodson argues that vegetarians and vegans frequently face discrimination where eating meat is held as a cultural norm.


Turnover

Research suggests that, at least in the United States, vegetarianism has a high turnover rate, with less than 20% of adopters persisting for more than a year. Research shows that lacking social support contributes to lapses. A 2019 analysis found that adhering to any kind of restricted diet (gluten-free, vegetarian, kosher, teetotal) was associated with feelings of loneliness and increased social isolation. Vegetarians or vegans who adopted their diet abruptly might be more likely to eventually abandon it when compared to individuals adopting their diet gradually with incremental changes.


Country-specific information

The rate of vegetarianism by country varies substantially from relatively low levels in countries such as the Netherlands (5%) to more considerable levels in India (20–40%). Estimates for the number of vegetarians per country can be subject to methodological difficulties, as respondents may identify as vegetarian even if they include some meat in their diet, and thus some researchers suggest the percentage of vegetarians may be significantly overestimated.


Media

Vegetarianism is occasionally List of fictional vegetarian characters, depicted in mass media. Some scholars have argued that mass media serves as a "source of information for individuals" interested in vegetarianism or veganism, while there are "increasing social sanctions against eating meat". Over time, societal attitudes of vegetarianism have changed, as have perceptions of vegetarianism in popular culture, leading to more "vegetarian sentiment". Even so, there are still existing "meat-based" food metaphors which infuse daily speech, and those who are vegetarian and vegan are met with "acceptance, tolerance, or hostility" after they divulge they are vegetarian or vegan. Some writers, such as John L. Cunningham, editor of the Vegetarian Resource Group's newsletter, have argued for "more sympathetic vegetarian characters in the mass media".


Literature

In Western literature, vegetarianism, and topics that relate to it, have informed a "gamut of literary genres", whether literary fiction or those fictions focusing on utopias, dystopias, or apocalypses, with authors shaped by questions about human identity and "our relation to the environment", implicating vegetarianism and veganism. Others have pointed to the lack of "memorable characters" who are vegetarian. There are also vegetarian themes in horror fiction, science fiction and poetry. In 1818, Mary Shelley published the novel ''Frankenstein''. Writer and
animal rights Animal rights is the philosophy according to which many or all Animal consciousness, sentient animals have Moral patienthood, moral worth independent of their Utilitarianism, utility to humans, and that their most basic interests—such as ...
advocate Carol J. Adams argued in her seminal book, ''The Sexual Politics of Meat'' that Frankenstein's monster, the unnamed creature in the novel was a vegetarian. She argued that the book was "indebted to the vegetarian climate" of its day and that vegetarianism is a major theme in the novel as a whole. She notes that the creature gives an "emotional speech" talking about its dietary principles, which makes it a "more sympathetic being" than others. She also said that it connected with Vegetarianism in the Romantic Era who believed that the Garden of Eden was meatless, rewrote the myth of Prometheus, the ideas of Jean-Jacques Rousseau, and feminist symbolism. Adams concludes that it is more likely that the "vegetarian revelations" in the novel are "silenced" due to the lack of a "framework into which we can assimilate them." Apart from Adams, scholar Suzanne Samples pointed to "gendered spaces of eating and consumption" within Victorian era, Victorian England which influenced literary characters of the time. This included works such as Alfred, Lord Tennyson's poem titled ''The Charge of the Light Brigade (poem), The Charge of the Light Brigade,'' Christina Rossetti's volume of poetry titled ''Goblin Market and Other Poems'', Lewis Carroll's ''Alice's Adventures in Wonderland'', Mary Seacole's autographical account titled ''Wonderful Adventures of Mrs. Seacole in Many Lands'', and Anthony Trollope's novel titled ''Orley Farm (novel), Orley Farm''. Samples also argued that vegetarianism in the Victorian era "presented a unique lifestyle choice that avoided meat but promoted an awareness of health", which initially was seen as rebellious but later became more normalized. In Irene Clyde's 1909 feminist utopian novel, ''Beatrice the Sixteenth'', Mary Hatherley accidentally Time travel, travels through time, discovering a lost world, which is a Postgenderism, postgender society named Armeria, with the inhabitants following a strict vegetarian diet, having ceased to slaughter animals for over a thousand years. Some reviewers of the book praised the vegetarianism of the Armerians. James Joyce's 1922 novel, ''Ulysses (novel), Ulysses'' is said to have vegetarian themes. Scholar Peter Adkins argued that while Joyce was critical of the vegetarianism of George A.E. Russell, the novel engages with "questions of animal ethics through its portrayal of Ireland's cattle industry, animal slaughter and the cultural currency of meat," unlike some of his other novels. He also stated that the novel "historicizes and theorizes animal life and death," and that it demonstrates the ways that symbolism and materiality of meat are "co-opted within patriarchal political structures," putting it in the same space as theorists like Carol J. Adams, Donna J. Haraway, Laura Wright, and Cary Wolfe, and writers such as J. M. Coetzee. In 1997, S. Reneé Wheeler wrote in the ''Vegetarian Journal'', saying that "finding books with vegetarian themes" is important for helping children "feel legitimate in being vegetarian." In 2004, writer J. M. Coetzee argued that since the "mode of consciousness of nonhuman species is quite different from human consciousness," it is hard for writers to realize this for animals, with a "temptation to project upon them feelings and thoughts that Anthropomorphism, may belong only to our own human mind and heart," and stated that reviewers have ignored the presence of animals in his books. He also stated that animals are present in his "fiction either not at all or in a merely subsidiary role" because they occupy "a subsidiary place in our lives" and argued that it is not "possible to write about the inner lives of animals in any complex way." In 2014, ''The New Yorker'' published a short story by Jonathan Lethem titled "Pending Vegan" which follows "one family, a husband and wife and their four-year-old twin daughters" on a trip to SeaWorld in San Diego, California. The protagonist of the story, Paul Espeseth, renames himself "Pending Vegan" in order to acknowledge his "increasing uneasiness with the relationship between man and beast." In 2016, a three-part Korean novel by Han Kang titled ''The Vegetarian'' was published in the U.S., which focuses on a woman named Young-hye, who "sees vegetarianism as a way of not inflicting harm on anything," with eating meat symbolizing human violence itself, and later identifies as a plant rather than as a human "and stops eating entirely." Some argued the book was more about mental illness than vegetarianism. Others compared it to fictional works by Margaret Atwood.


Television

Vegetarians, and vegetarian themes, have appeared in various TV shows, such as ''Buffy the Vampire Slayer'', ''True Blood'', ''The Simpsons'', ''King of the Hill'', and ''South Park''. Mr. Spock of ''Star Trek: The Original Series, Star Trek'' has been called "television's first vegetarian." He and his fellow Vulcans do not eat meat due to a "philosophy of non-violence." He is identified as vegetarian following an episode where he was "transported back to pre-civilised times" and ate meat, and in Richard Marranca, in an issue of the ''Vegetarian Journal'', said that for Spock, like Kwai Chang Caine in Kung Fu (1972 TV series), ''Kung Fu'', "vegetarianism was something authentic and taken for granted; it was the right thing to do based on compassion and logic." In 1995, ''The Simpsons'' episode "Lisa the Vegetarian" aired. Before recording their lines for the episode, showrunner David Mirkin, who had recently stopped consuming meat, gave Linda and Paul McCartney "a container of his favorite turkey substitute," with both voicing characters in an episode which focused around vegetarianism. Critic Alan Siegel said that before the episode vegetarians had been portrayed as "rarely as anything but one-dimensional hippies" but that this episode was different as it was "told from the point of view of the person becoming a vegetarian." He said that the episode was one of the "first times on television that vegetarians saw an honest depiction of themselves" and of people's reaction to their dietary choices. The idea for the episode was originally proposed by David X. Cohen and the McCartneys agreed on the condition that Lisa remain a vegetarian, with both satisfied with how the episode turned out. In the episode, Lisa decides to stop eating meat after bonding with a lamb at a petting zoo. Her schoolmates and family members ridicule her for her beliefs, but with the help of Apu as well as Paul McCartney, Paul and Linda McCartney, she commits to vegetarianism. The staff promised that she would remain a vegetarian, resulting in one of the few permanent character changes made in the show.Groening, Matt (2005). Commentary for "Lisa the Vegetarian", in ''The Simpsons: The Complete Seventh Season'' [DVD]. 20th Century Fox. In an August 2020 interview, McCartney said that he and is wife were worried that Lisa "would be a vegetarian for a week, then Homer would persuade her to eat a hot dog," but were assured by the producers that she would remain that way, and he was delighted that they "kept their word." In September 1998, the ''King of the Hill'' episode "And They Call It Bobby Love" aired on FOX. In the episode, "Bobby Hill (King of the Hill), Bobby has a relationship with a vegetarian named Marie. She later dumps him after he eats a steak in front of her." In the March 2002 ''South Park'' episode "Fun with Veal", Stan Marsh becomes a vegetarian after he learns that veal is made of baby cows, which Cartman makes fun of. The episode ends with the boys, including Stan, getting grounded, but not before going out with their parents for burgers, meaning that Stan is no longer a vegetarian. In the DVD commentary, the creators said they wanted to balance their message of not eating baby animals, by at the same time not advocating people abstain from meat consumption altogether. Aang, in the animated series ''Avatar: The Last Airbender'' and ''The Legend of Korra'' was vegetarian. According to the show's creators, "Buddhism and Taoism have been huge inspirations behind the idea for ''Avatar''." As shown in "The King of Omashu" and "The Headband", a notable aspect of Aang's character is his vegetarian diet, which is consistent with Buddhism,
Hinduism Hinduism () is an Hypernymy and hyponymy, umbrella term for a range of Indian religions, Indian List of religions and spiritual traditions#Indian religions, religious and spiritual traditions (Sampradaya, ''sampradaya''s) that are unified ...
, and Taoism. In the Brahmajala Sutta (Theravada), Brahmajala Sutra, a Buddhist code of ethics, vegetarianism is encouraged. Other fictional characters who are vegetarians include Count Duckula#Count Duckula, Count Duckula in ''Count Duckula'', Beast Boy in ''Teen Titans (TV series), Teen Titans'' and ''Teen Titans Go!'', List of Supernatural characters#Vampires, Lenore in ''Supernatural (American TV series), Supernatural'', and Shaggy Rogers, Norville "Shaggy" Rogers in the animated series ''What's New, Scooby Doo?''. Before the latter animated series, Shaggy was known for having an "enormous appetite" earlier in the Scooby-Doo franchise. The decision to make Shaggy a vegetarian occurred after his voice actor, Casey Kasem, convinced the producers to do so, since he was a vegan who supported
animal rights Animal rights is the philosophy according to which many or all Animal consciousness, sentient animals have Moral patienthood, moral worth independent of their Utilitarianism, utility to humans, and that their most basic interests—such as ...
and opposed
factory farming Intensive animal farming, industrial livestock production, and macro-farms, also known as factory farming, is a type of intensive agriculture, specifically an approach to mass animal husbandry designed to maximize production while minimizing co ...
, saying he would refuse to voice Shaggy unless the character was vegetarian. An October 2019 ''South Park'' episode, "Let Them Eat Goo", featured a vegetarian character. Additionally, Steven Universe (character), Steven Universe, the protagonist in the show ''Steven Universe'' and the limited epilogue series, ''Steven Universe Future'', is a vegetarian. In the episode "Snow Day" of ''Steven Universe Future'', Steven tells the Gems he lives with that he has been a vegetarian for a month, drinks protein shakes and mentions that he does "his own skincare routine."


Film

In the 1999 film, ''Notting Hill (film), Notting Hill'', Keziah, played by Emma Bernard is a vegetarian. In one scene, Keziah tells William "Will" Thacker (played by Hugh Grant), that she is a fruitarian. She says she believes that "fruits and vegetables have feeling", meaning she opposes cooking them, only eating things that have "actually fallen off a tree or bush" and that are dead already, leading to what some describe as a negative depiction. In the 2000 film, ''But I'm A Cheerleader'', before Megan, one of the film's protagonists, is sent to a conversion therapy camp, her parents and others claim she is a lesbian because she is a vegetarian. ''Legally Blonde'', a 2001 film, also featured a vegetarian—Elle Woods. When she introduces herself at Harvard Law School, she describes herself and her dog as "Gemini vegetarians". In the 2012 film, ''Life of Pi (film), Life of Pi'', Pi, played by Suraj Sharma, is a vegetarian based on his 3 religions: Hindu, Christian, and Muslim. And in the ship scene, one Taiwanese Sailor, played by Bo-Chieh Wang, is a vegetarian from his Buddhism religion to eat rice and the vegetarian gravy. In the 2018 Hollywood blockbuster, ''Black Panther (film), Black Panther'', M’Baku (voiced by Winston Duke), the Jabari tribe leader who lives in the mountains of Wakanda, declares to a White CIA agent named Everett Ross (voiced by Martin Freeman), "if you say one more word, I'll feed you to my children!" After Everett is shaken by these words, he jokes, saying he is kidding because all those in his tribe, including himself, are vegetarians. Some praised this scene for challenging a stereotype of Black culture and the perception of what vegetarians look like. Duke later said that some Black outlets cooked vegan meals for him, and said that the scene is "kind of teaching kids that eating vegetables is cool," which is something he is for. Vegetarian themes have also been noted in the ''Twilight'' Twilight (novel series), novel (2005–2008) and The Twilight Saga (film series), film franchise (2008–2012), ''The Road'' (2006) and ''The Year of the Flood'' (2009). In March 2020, scholar Nathan Poirer reviewed ''Thinking Veganism in Literature and Culture: Towards a Vegan Theory'', a book edited by Emelia Quinn and Benjamin Westwood, and he concluded that veganism could "infiltrate popular culture without being perceived as threatening," while noting others who contribute to the book examining vegan cinema that "challenges the normality of human supremacy by situating humans as potential prey," and stating that the essays outline ways veganism can be successful in popular culture. Reviewers said that the Netflix original film, ''Okja'', which focused on
factory farming Intensive animal farming, industrial livestock production, and macro-farms, also known as factory farming, is a type of intensive agriculture, specifically an approach to mass animal husbandry designed to maximize production while minimizing co ...
, talks about genetically modified animals, and features a Radical environmentalism, radical environmentalist group, had an impact on people's diets. Some said the film would convince audience members to become vegetarians, saying the film encourages people to eat less meat, comparing it to the impact of the documentaries ''Food, Inc.'', ''Blackfish'', ''The Cove (film), The Cove'', and ''Cowspiracy'', Jonathan Safran Foer’s book, ''Eating Animals'', the films ''Charlotte’s Web'', ''Babe (film), Babe'', and ''Chicken Run'', and to the themes of ''Watership Down''. The film was also described as the "ultimate vegetarian film." The film's co-writer, Jon Ronson, who is also vegetarian, said that while the film will "turn people vegetarian", this was not his intention nor that of director Bong Joon-ho. In an interview with The Independent, Joon-ho said that he did not "expect the entire audience to convert to veganism after watching the film" and said that he does not have an issue with meat consumption, but asked the audience to consider where their food comes from, and said if that happens, then the "level of meat consumption will gradually decline." Joon-Ho told LA Times that in his view, the food industry is "always trying to do is try to thicken the walls of the slaughterhouse so that nobody can peer inside it," with LA Times noting that Joon-Ho became vegan after visiting a slaugherhouse in South Korea, but ended the diet change after two months. Paul Dano, who plays Jay in the film, also told GQ that that while he is a meat-eater, it made him want to "be more conscientious consumer" and said it is easy to "forget that when we put our dollar down we are supporting something." Other scholars noted vegetarian themes in the films ''The Fault in Our Stars (film), The Fault in Our Stars'', ''The Princess Diaries (film), The Princess Diaries'' series, and the 2009 film, ''Vegetarian (film), Vegetarian''.


See also

* European Vegetarian Union *
International Vegetarian Union The International Vegetarian Union (IVU) is an international non-profit organization whose purpose is to promote vegetarianism. The IVU was founded in 1908 in Dresden, Germany. It is an umbrella organisation, which includes organisations from ...
* List of vegetarians * Plant-based diet * ProVeg International * Vegetarian and vegan symbolism * Vegetarian cuisine * Vegetarian Diet Pyramid * Vegetarian nutrition


References


External links


The Complete Vegetarian Cookbook

The Logic of Vegetarianism: Essays and Dialogues by Henry S. Salt
{{Portal bar, Food, Medicine Vegetarianism, Vegetables, * Diets Applied ethics Intentional living Nonviolence