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Female infertility refers to
infertility In biology, infertility is the inability of a male and female organism to Sexual reproduction, reproduce. It is usually not the natural state of a healthy organism that has reached sexual maturity, so children who have not undergone puberty, whi ...
in women, which is the inability to conceive after
sexual intercourse Sexual intercourse (also coitus or copulation) is a sexual activity typically involving the insertion of the Erection, erect male Human penis, penis inside the female vagina and followed by Pelvic thrust, thrusting motions for sexual pleasure ...
. It affects an estimated 48 million women, globally. Female infertility varies widely by region. The highest rates of female infertility are found in
Eastern Europe Eastern Europe is a subregion of the Europe, European continent. As a largely ambiguous term, it has a wide range of geopolitical, geographical, ethnic, cultural and socio-economic connotations. Its eastern boundary is marked by the Ural Mountain ...
and South
Central Asia Central Asia is a region of Asia consisting of Kazakhstan, Kyrgyzstan, Tajikistan, Turkmenistan, and Uzbekistan. The countries as a group are also colloquially referred to as the "-stans" as all have names ending with the Persian language, Pers ...
, followed by
South Asia South Asia is the southern Subregion#Asia, subregion of Asia that is defined in both geographical and Ethnicity, ethnic-Culture, cultural terms. South Asia, with a population of 2.04 billion, contains a quarter (25%) of the world's populatio ...
,
Sub-Saharan Africa Sub-Saharan Africa is the area and regions of the continent of Africa that lie south of the Sahara. These include Central Africa, East Africa, Southern Africa, and West Africa. Geopolitically, in addition to the list of sovereign states and ...
, and
Middle East and North Africa The Middle East and North Africa (MENA), also referred to as West Asia and North Africa (WANA) or South West Asia and North Africa (SWANA), is a geographic region which comprises the Middle East (also called West Asia) and North Africa together ...
. Female infertility rates are lowest in
East Asia East Asia is a geocultural region of Asia. It includes China, Japan, Mongolia, North Korea, South Korea, and Taiwan, plus two special administrative regions of China, Hong Kong and Macau. The economies of Economy of China, China, Economy of Ja ...
and
Latin America Latin America is the cultural region of the Americas where Romance languages are predominantly spoken, primarily Spanish language, Spanish and Portuguese language, Portuguese. Latin America is defined according to cultural identity, not geogr ...
. Fertility is affected by a variety of factors, including
hormones A hormone (from the Greek participle , "setting in motion") is a class of signaling molecules in multicellular organisms that are sent to distant organs or tissues by complex biological processes to regulate physiology and behavior. Hormones a ...
, nutritional status, disease, and malformations of the uterus. Infertility affects women from around the world, and the social stigmas affecting infertile women may vary from region to region.


Cause

Causes or factors of female infertility can basically be classified regarding whether they are acquired or genetic, or strictly by location. Although factors of female infertility can be classified as either acquired or genetic, female infertility is usually more or less a combination of
nature and nurture Nature versus nurture is a long-standing debate in biology and society about the relative influence on human beings of their genetic inheritance (nature) and the environmental conditions of their development ( nurture). The alliterative expression ...
. Also, the presence of any single
risk factor In epidemiology, a risk factor or determinant is a variable associated with an increased risk of disease or infection. Due to a lack of harmonization across disciplines, determinant, in its more widely accepted scientific meaning, is often use ...
of female infertility (such as smoking, mentioned further below) does not necessarily cause infertility, and even if a woman is definitely infertile, the infertility cannot definitely be blamed on any single risk factor even if the risk factor is (or has been) present.


Hormonal dysfunction

Ovulatory hormonal disorders are the greatest single contributing factor to female infertility.
Anovulation Anovulation is when the ovaries do not release an oocyte during a menstrual cycle. Therefore, ovulation does not take place. However, a woman who does not ovulate at each menstrual cycle is not necessarily going through menopause. Chronic anovulat ...
, or the failure to ovulate, is primarily caused by insufficient hormone levels, including low
estrogen Estrogen (also spelled oestrogen in British English; see spelling differences) is a category of sex hormone responsible for the development and regulation of the female reproductive system and secondary sex characteristics. There are three ...
levels, insufficient
GnRH Gonadotropin-releasing hormone (GnRH) is a releasing hormone responsible for the release of follicle-stimulating hormone (FSH) and luteinizing hormone (LH) from the anterior pituitary. GnRH is a tropic peptide hormone synthesized and released ...
secretion, as well as insufficient levels of other hormones secreted by the
hypothalamus The hypothalamus (: hypothalami; ) is a small part of the vertebrate brain that contains a number of nucleus (neuroanatomy), nuclei with a variety of functions. One of the most important functions is to link the nervous system to the endocrin ...
and
pituitary The pituitary gland or hypophysis is an endocrine gland in vertebrates. In humans, the pituitary gland is located at the base of the brain, protruding off the bottom of the hypothalamus. The pituitary gland and the hypothalamus control much of th ...
glands. However, women with normal estrogen levels can also suffer from low fertility, such as in the case of women with
PCOS Polycystic ovary syndrome, or polycystic ovarian syndrome, (PCOS) is the most common endocrine disorder in women of reproductive age. The name is a misnomer, as not all women with this condition develop cysts on their ovaries. The name origi ...
. It is not understood why women with PCOS and normal estrogen levels can still be infertile. However, it is believed that imbalanced secretion of
GnRH Gonadotropin-releasing hormone (GnRH) is a releasing hormone responsible for the release of follicle-stimulating hormone (FSH) and luteinizing hormone (LH) from the anterior pituitary. GnRH is a tropic peptide hormone synthesized and released ...
can explain why such women fail to conceive, highlighting the need for hormonal balance in women with PCOS.


Acquired

According to the
American Society for Reproductive Medicine The American Society for Reproductive Medicine (ASRM) is a nonprofit, multidisciplinary organization for advancement of the science and practice of reproductive medicine. The society has its headquarters in Washington, D.C., and its administrat ...
(ASRM), age, smoking, sexually transmitted infections, and being overweight or underweight can all affect fertility. In broad sense, acquired factors practically include any factor that is not based on a
genetic mutation In biology, a mutation is an alteration in the nucleic acid sequence of the genome of an organism, virus, or extrachromosomal DNA. Viral genomes contain either DNA or RNA. Mutations result from errors during DNA or viral replication, mitosis ...
, including any intrauterine exposure to toxins during fetal development, which may present as infertility many years later as an adult.


Age

A woman's fertility is affected by her age. The average age of a girl's first period (
menarche Menarche ( ; ) is the first menstrual cycle, or first menstruation, menstrual bleeding, in female humans. From both social and medical perspectives, it is often considered the central event of female puberty, as it signals the possibility of fe ...
) is 12–13 (12.5 years in the
United States The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...
, 12.72 in
Canada Canada is a country in North America. Its Provinces and territories of Canada, ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, making it the world's List of coun ...
, 12.9 in the UK), but, in postmenarchal girls, about 80% of the cycles are
anovulatory Anovulation is when the ovaries do not release an oocyte during a menstrual cycle. Therefore, ovulation does not take place. However, a woman who does not ovulate at each menstrual cycle is not necessarily going through menopause. Chronic anovul ...
in the first year after menarche, 50% in the third and 10% in the sixth year. A woman's fertility peaks in the early and mid 20s, after which it starts to decline, with this decline being accelerated after age 35. However, the exact estimates of a woman's chances to conceive after a certain age are not clear, with research giving differing results. The chances of a couple to successfully conceive at an advanced age depend on many factors, including the general health of a woman and the fertility of the male partner.
Menopause Menopause, also known as the climacteric, is the time when Menstruation, menstrual periods permanently stop, marking the end of the Human reproduction, reproductive stage for the female human. It typically occurs between the ages of 45 and 5 ...
typically occurs between 44 and 58 years of age. DNA testing is rarely carried out to confirm claims of maternity at advanced ages, but in one large study, among 12,549 African and Middle Eastern immigrant mothers, confirmed by DNA testing, only two mothers were found to be older than fifty, the oldest mother being 52.1 years at conception (and the youngest mother 10.7 years old).Forster P, Hohoff C, Dunkelmann B, Schürenkamp M, Pfeiffer H, Neuhuber F, Brinkmann B. (2015) "Elevated germline mutation rate in teenage fathers". ''Proc Biol Sci'' 282:2014289

/ref>


Tobacco smoking

Tobacco smoking Tobacco smoking is the practice of burning tobacco and ingesting the resulting smoke. The smoke may be inhaled, as is done with cigarettes, or released from the mouth, as is generally done with pipes and cigars. The practice is believed to hav ...
is harmful to the ovaries, and the degree of damage is dependent upon the amount and length of time a woman smokes or is exposed to a smoke-filled environment. Nicotine and other harmful chemicals in cigarettes interfere with the body's ability to create
estrogen Estrogen (also spelled oestrogen in British English; see spelling differences) is a category of sex hormone responsible for the development and regulation of the female reproductive system and secondary sex characteristics. There are three ...
, a hormone that regulates
folliculogenesis :''Although the process is similar in many animals, this article will deal exclusively with human folliculogenesis.'' In biology, folliculogenesis is the maturation of the ovarian follicle, a densely packed shell of somatic cells that contains an ...
and
ovulation Ovulation is an important part of the menstrual cycle in female vertebrates where the egg cells are released from the ovaries as part of the ovarian cycle. In female humans ovulation typically occurs near the midpoint in the menstrual cycle and ...
. Also, cigarette smoking interferes with folliculogenesis, embryo transport, endometrial receptivity, endometrial angiogenesis, uterine blood flow and the uterine myometrium. Some damage is irreversible, but stopping smoking can prevent further damage.FERTILITY FACT > Female Risks
By the American Society for Reproductive Medicine (ASRM). Retrieved on Jan 4, 2009
Smokers are 60% more likely to be infertile than non-smokers. Smoking reduces the chances of IVF producing a live birth by 34% and increases the risk of an IVF pregnancy miscarrying by 30%.Regulated fertility services: a commissioning aid - June 2009
, from the Department of Health UK
Also, female smokers have an earlier onset of
menopause Menopause, also known as the climacteric, is the time when Menstruation, menstrual periods permanently stop, marking the end of the Human reproduction, reproductive stage for the female human. It typically occurs between the ages of 45 and 5 ...
by approximately 1–4 years.


Sexually transmitted infections

Sexually transmitted infection A sexually transmitted infection (STI), also referred to as a sexually transmitted disease (STD) and the older term venereal disease (VD), is an infection that is Transmission (medicine), spread by Human sexual activity, sexual activity, e ...
s are a leading cause of infertility. They often display few, if any visible symptoms, with the risk of failing to seek proper treatment in time to prevent decreased fertility.


Body weight and eating disorders

Twelve percent of all infertility cases are a result of a woman either being
underweight An underweight person is a person whose body weight is considered too low to be healthy. A person who is underweight is malnourished. Assessment The body mass index, a ratio of a person's weight to their height, has traditionally been used t ...
or
overweight Being overweight is having more body fat than is optimally healthy. Being overweight is especially common where food supplies are plentiful and lifestyles are sedentary. , excess weight reached epidemic proportions globally, with more than ...
.
Fat cells Adipocytes, also known as lipocytes and fat cells, are the cell (biology), cells that primarily compose adipose tissue, specialized in storing energy as fat. Adipocytes are derived from mesenchymal stem cells which give rise to adipocytes through ...
produce estrogen, in addition to the primary
sex organ A sex organ, also known as a reproductive organ, is a part of an organism that is involved in sexual reproduction. Sex organs constitute the primary sex characteristics of an organism. Sex organs are responsible for producing and transporting ...
s. Too much body fat causes production of too much estrogen and the body begins to react as if it is on birth control, limiting the odds of getting pregnant. Too little body fat causes insufficient production of estrogen and disruption of the
menstrual cycle The menstrual cycle is a series of natural changes in hormone production and the structures of the uterus and ovaries of the female reproductive system that makes pregnancy possible. The ovarian cycle controls the production and release of eg ...
. Both under and overweight women have irregular cycles in which ovulation does not occur or is inadequate. Proper nutrition in early life is also a major factor for later fertility. A study in the US indicated that approximately 20% of infertile women had a past or current eating disorder, which is five times higher than the general lifetime prevalence rate. A review from 2010 concluded that overweight and obese subfertile women have a reduced probability of successful fertility treatment and their pregnancies are associated with more complications and higher costs. In hypothetical groups of 1,000 women undergoing fertility care, the study counted approximately 800 live births for normal weight and 690 live births for overweight and obese anovulatory women. For ovulatory women, the study counted approximately 700 live births for normal weight, 550 live births for overweight and 530 live births for obese women. The increase in cost per live birth in anovulatory overweight and obese women were, respectively, 54 and 100% higher than their normal weight counterparts, for ovulatory women they were 44 and 70% higher, respectively.


Radiation

Exposure to radiation poses a high risk of infertility, depending on the frequency, power, and exposure duration.
Radiotherapy Radiation therapy or radiotherapy (RT, RTx, or XRT) is a treatment using ionizing radiation, generally provided as part of cancer therapy to either kill or control the growth of malignant cells. It is normally delivered by a linear particle ...
is reported to cause infertility.


Chemotherapy

Chemotherapy Chemotherapy (often abbreviated chemo, sometimes CTX and CTx) is the type of cancer treatment that uses one or more anti-cancer drugs (list of chemotherapeutic agents, chemotherapeutic agents or alkylating agents) in a standard chemotherapy re ...
poses a high risk of infertility. Chemotherapies with high risk of infertility include procarbazine and other alkylating drugs such as cyclophosphamide, ifosfamide, busulfan, melphalan, chlorambucil and chlormethine. Drugs with medium risk include doxorubicin and platinum analogs such as cisplatin and carboplatin. On the other hand, therapies with low risk of gonadotoxicity include plant derivatives such as vincristine and vinblastine, antibiotics such as bleomycin and dactinomycin and antimetabolites such as methotrexate, mercaptopurine and 5-fluorouracil. Female infertility by chemotherapy appears to be secondary to
premature ovarian failure Primary ovarian insufficiency (POI), also called premature ovarian insufficiency and premature ovarian failure, is the partial or total loss of reproductive and hormonal function of the ovaries before age 40 because of follicular ( egg produc ...
by loss of primordial follicles. This loss is not necessarily a direct effect of the chemotherapeutic agents, but could be due to an increased rate of growth initiation to replace damaged developing follicles. Antral follicle count decreases after three series of chemotherapy, whereas
follicle stimulating hormone Follicle-stimulating hormone (FSH) is a gonadotropin, a glycoprotein polypeptide hormone. FSH is synthesized and secreted by the gonadotropic cells of the anterior pituitary gland and regulates the development, growth, pubertal maturation, ...
(FSH) reaches menopausal levels after four series. Other hormonal changes in chemotherapy include decrease in inhibin B and
anti-Müllerian hormone Anti-Müllerian hormone (AMH), also known as Müllerian-inhibiting hormone (MIH), is a glycoprotein hormone structurally related to Activin and inhibin, inhibin and activin from the transforming growth factor beta superfamily, whose key roles a ...
levels. Women may choose between several methods of
fertility preservation Fertility preservation is the effort to help cancer patients retain their fertility, or ability to procreate. Research into how cancer, ageing and other health conditions effect reproductive health and preservation options are growing. Specifically ...
prior to chemotherapy, including
cryopreservation Cryopreservation or cryoconservation is a process where biological material - cells, tissues, or organs - are frozen to preserve the material for an extended period of time. At low temperatures (typically or using liquid nitrogen) any cell ...
of ovarian tissue, oocytes or embryos.


Immune infertility

Antisperm antibodies (ASA) have been considered as infertility cause in around 10–30% of infertile couples. ASA production are directed against surface antigens on sperm, which can interfere with sperm motility and transport through the female reproductive tract, inhibiting capacitation and
acrosome reaction For fertilization to happen between a sperm and egg cell, a sperm must first fuse with the plasma membrane and then penetrate the female egg cell to fertilize it. While the fusion of the sperm cell with the egg cell's plasma membrane is relatively ...
, impaired
fertilization Fertilisation or fertilization (see American and British English spelling differences#-ise, -ize (-isation, -ization), spelling differences), also known as generative fertilisation, syngamy and impregnation, is the fusion of gametes to give ...
, influence on the implantation process, and impaired growth and development of the
embryo An embryo ( ) is the initial stage of development for a multicellular organism. In organisms that reproduce sexually, embryonic development is the part of the life cycle that begins just after fertilization of the female egg cell by the male sp ...
. Factors contributing to the formation of antisperm antibodies in women are disturbance of normal immunoregulatory mechanisms, infection, violation of the integrity of the mucous membranes, rape and unprotected oral or anal sex.


Other acquired factors

*
Adhesions Adhesions are fibrous bands that form between tissues and organs, often as a result of injury during surgery. They may be thought of as internal scar tissue that connects tissues not normally connected. Pathophysiology Adhesions form as a nat ...
secondary to
surgery Surgery is a medical specialty that uses manual and instrumental techniques to diagnose or treat pathological conditions (e.g., trauma, disease, injury, malignancy), to alter bodily functions (e.g., malabsorption created by bariatric surgery s ...
in the
peritoneal cavity The peritoneal cavity is a potential space located between the two layers of the peritoneum—the parietal peritoneum, the serous membrane that lines the abdominal wall, and visceral peritoneum, which surrounds the internal organs. While situated ...
is the leading cause of acquired infertility. A meta-analysis in 2012 came to the conclusion that there is only little evidence for the surgical principle that using less invasive techniques, introducing less foreign bodies or causing less ischemia reduces the extent and severity of adhesions. *
Diabetes mellitus Diabetes mellitus, commonly known as diabetes, is a group of common endocrine diseases characterized by sustained hyperglycemia, high blood sugar levels. Diabetes is due to either the pancreas not producing enough of the hormone insulin, or th ...
. A review of type 1 diabetes came to the result that, despite modern treatment, women with diabetes are at increased risk of female infertility, such as reflected by delayed puberty and menarche, menstrual irregularities (especially
oligomenorrhoea Oligomenorrhea is characterised by infrequent menstrual periods. Generally, the menstrual periods occur at intervals of greater than 35 days, with fewer than 9 periods in a year, where previously there had been a regularly established pattern. The ...
), mild
hyperandrogenism Hyperandrogenism is a medical condition characterized by high levels of androgens. It is more common in women than men. Symptoms of hyperandrogenism may include acne, seborrhea, hair loss on the scalp, increased body or facial hair, and infre ...
,
polycystic ovarian syndrome Polycystic ovary syndrome, or polycystic ovarian syndrome, (PCOS) is the most common endocrine disorder in women of reproductive age. The name is a misnomer, as not all women with this condition develop cysts on their ovaries. The name origi ...
, fewer live born children and possibly earlier
menopause Menopause, also known as the climacteric, is the time when Menstruation, menstrual periods permanently stop, marking the end of the Human reproduction, reproductive stage for the female human. It typically occurs between the ages of 45 and 5 ...
. Animal models indicate that abnormalities on the molecular level caused by diabetes include defective
leptin Leptin (from Ancient Greek, Greek λεπτός ''leptos'', "thin" or "light" or "small"), also known as obese protein, is a protein hormone predominantly made by adipocytes (cells of adipose tissue). Its primary role is likely to regulate long ...
,
insulin Insulin (, from Latin ''insula'', 'island') is a peptide hormone produced by beta cells of the pancreatic islets encoded in humans by the insulin (''INS)'' gene. It is the main Anabolism, anabolic hormone of the body. It regulates the metabol ...
and
kisspeptin Kisspeptins (including kisspeptin-54 (KP-54), formerly known as metastin) are proteins encoded by the ''KISS1'' gene in humans. Kisspeptins are ligands of the G-protein coupled receptor, GPR54. ''Kiss1'' was originally identified as a human me ...
signalling. *
Coeliac disease Coeliac disease (British English) or celiac disease (American English) is a long-term autoimmune disorder, primarily affecting the small intestine. Patients develop intolerance to gluten, which is present in foods such as wheat, rye, spelt ...
. Non-gastrointestinal symptoms of coeliac disease may include disorders of fertility, such as delayed menarche, amenorrea, infertility or early menopause; and
pregnancy Pregnancy is the time during which one or more offspring gestation, gestates inside a woman's uterus. A multiple birth, multiple pregnancy involves more than one offspring, such as with twins. Conception (biology), Conception usually occurs ...
complications, such as
intrauterine growth restriction Intrauterine growth restriction (IUGR), or fetal growth restriction, is the poor growth of a fetus while in the womb during pregnancy. IUGR is defined by clinical features of malnutrition and evidence of reduced growth regardless of an infant's ...
(IUGR),
small for gestational age Small for gestational age (SGA) newborns are those who are smaller in size than normal for the gestational age. SGA is most commonly defined as a weight below the 10th percentile for the gestational age. SGA predicts susceptibility to hypoglycemi ...
(SGA) babies, recurrent
abortion Abortion is the early termination of a pregnancy by removal or expulsion of an embryo or fetus. Abortions that occur without intervention are known as miscarriages or "spontaneous abortions", and occur in roughly 30–40% of all pregnan ...
s, preterm deliveries or
low birth weight Low birth weight (LBW) is defined by the World Health Organization as a birth weight of an infant of or less, regardless of gestational age. Infants born with LBW have added health risks which require close management, often in a neonatal inten ...
(LBW) babies. Nevertheless,
gluten-free diet A gluten-free diet (GFD) is a nutritional plan that strictly excludes gluten, which is a mixture of prolamin proteins found in wheat (and all of its species and hybrids, such as spelt, kamut, and triticale), as well as barley, rye, and oats ...
reduces the risk. Some authors suggest that physicians should investigate the presence of undiagnosed coeliac disease in women with unexplained infertility, recurrent miscarriage or IUGR. *Significant
liver The liver is a major metabolic organ (anatomy), organ exclusively found in vertebrates, which performs many essential biological Function (biology), functions such as detoxification of the organism, and the Protein biosynthesis, synthesis of var ...
or
kidney In humans, the kidneys are two reddish-brown bean-shaped blood-filtering organ (anatomy), organs that are a multilobar, multipapillary form of mammalian kidneys, usually without signs of external lobulation. They are located on the left and rig ...
disease *
Thrombophilia Thrombophilia (sometimes called hypercoagulability or a prothrombotic state) is an abnormality of blood coagulation that increases the risk of thrombosis (blood clots in blood vessels). Such abnormalities can be identified in 50% of people who ...
*
Cannabis smoking Cannabis smoking (known Colloquialism, colloquially as smoking weed or smoking pot) is the inhalation of smoke or vapor released by heating the flowers, leaves, or extracts of Cannabis (drug), cannabis and releasing the main Psychoactive drug ...
, such as of
marijuana Cannabis (), commonly known as marijuana (), weed, pot, and ganja, List of slang names for cannabis, among other names, is a non-chemically uniform psychoactive drug from the ''Cannabis'' plant. Native to Central or South Asia, cannabis has ...
causes disturbances in the
endocannabinoid system The endocannabinoid system (ECS) is a biological system composed of endocannabinoids, which are neurotransmitters that bind to cannabinoid receptors, and cannabinoid receptor proteins that are expressed throughout the central nervous system ( ...
, potentially causing infertility *Radiation, such as in
radiation therapy Radiation therapy or radiotherapy (RT, RTx, or XRT) is a therapy, treatment using ionizing radiation, generally provided as part of treatment of cancer, cancer therapy to either kill or control the growth of malignancy, malignant cell (biology), ...
. The radiation dose to the ovaries that generally causes permanent female infertility is 20.3 Gy at birth, 18.4 Gy at 10 years, 16.5 Gy at 20 years and 14.3 Gy at 30 years. After
total body irradiation Total body irradiation (TBI) is a form of radiotherapy used primarily as part of the preparative regimen for haematopoietic stem cell (or bone marrow) transplantation. As the name implies, TBI involves irradiation of the entire body, though in mod ...
, recovery of gonadal function occurs in 10−14% of cases, and the number of pregnancies observed after
hematopoietic stem cell transplantation Hematopoietic stem-cell transplantation (HSCT) is the transplantation of multipotent hematopoietic stem cells, usually derived from bone marrow, peripheral blood, or umbilical cord blood, in order to replicate inside a patient and produce ...
involving such as procedure is lower than 2%.


Genetic factors

There are many
gene In biology, the word gene has two meanings. The Mendelian gene is a basic unit of heredity. The molecular gene is a sequence of nucleotides in DNA that is transcribed to produce a functional RNA. There are two types of molecular genes: protei ...
s wherein
mutation In biology, a mutation is an alteration in the nucleic acid sequence of the genome of an organism, virus, or extrachromosomal DNA. Viral genomes contain either DNA or RNA. Mutations result from errors during DNA or viral replication, ...
causes female infertility, as shown in table below. Also, there are additional conditions involving female infertility which are believed to be genetic but where no single gene has been found to be responsible, notably Mayer-Rokitansky-Küstner-Hauser Syndrome (MRKH). Finally, an unknown number of genetic mutations cause a state of subfertility, which in addition to other factors such as environmental ones may manifest as frank infertility.
Chromosomal abnormalities A chromosomal abnormality, chromosomal anomaly, chromosomal aberration, chromosomal mutation, or chromosomal disorder is a missing, extra, or irregular portion of chromosomal DNA. These can occur in the form of numerical abnormalities, where ther ...
causing female infertility include
Turner syndrome Turner syndrome (TS), commonly known as 45,X, or 45,X0,Also written as 45,XO. is a chromosomal disorder in which cells of females have only one X chromosome instead of two, or are partially missing an X chromosome (sex chromosome monosomy) lea ...
. Oocyte donation is an alternative for patients with Turner syndrome. Some of these gene or chromosome abnormalities cause
intersex conditions Intersex people are those born with any of several Sexual characteristics, sex characteristics, including chromosome patterns, gonads, or sex organ, genitals that, according to the Office of the United Nations High Commissioner for Human ...
, such as
androgen insensitivity syndrome Androgen insensitivity syndrome (AIS) is a condition involving the inability to respond to androgens, typically due to androgen receptor dysfunction. It affects 1 in 20,000 to 64,000 XY (karyotype, karyotypically male) births. The condition result ...
.


By location


Hypothalamic-pituitary factors

* Hypothalamic dysfunction *
Hyperprolactinemia Hyperprolactinaemia (also spelled hyperprolactinemia) is a condition characterized by abnormally high levels of prolactin in the blood. In women, normal prolactin levels average to about 13 ng/mL, while in men, they average 5 ng/mL. ...


Ovarian factors

*
Chemotherapy Chemotherapy (often abbreviated chemo, sometimes CTX and CTx) is the type of cancer treatment that uses one or more anti-cancer drugs (list of chemotherapeutic agents, chemotherapeutic agents or alkylating agents) in a standard chemotherapy re ...
(as detailed previously) with certain agents have a high risk of toxicity on the ovaries. *Many genetic defects (as also detailed previously) also disturb ovarian function. *
Polycystic ovary syndrome Polycystic ovary syndrome, or polycystic ovarian syndrome, (PCOS) is the most common endocrine disorder in women of reproductive age. The name is a misnomer, as not all women with this condition develop cysts on their ovaries. The name origin ...
(also see infertility in polycystic ovary syndrome) •2 of these 3 criteria: 1) Anovulation/oligovulation 2) Hyperandrogenism 3) PCO Ultrasound •Must be excluded: o Congenital Suprarenal hyperplasia o Androgen producer tumors o Hyperprolactinemia Some of PCOS's consequences are: •Insulin Resistance in 80% of PCOS women. •Higher incidence of spontaneous miscarriage. •Higher risk of developing diabetes mellitus type 2 *
Anovulation Anovulation is when the ovaries do not release an oocyte during a menstrual cycle. Therefore, ovulation does not take place. However, a woman who does not ovulate at each menstrual cycle is not necessarily going through menopause. Chronic anovulat ...
. Female infertility caused by anovulation is called "anovulatory infertility", as opposed to "ovulatory infertility" in which ovulation is present. *Diminished
ovarian reserve Ovarian reserve is a term that is used to determine the capacity of the ovary to provide egg cells that are capable of fertilization resulting in a healthy and successful pregnancy. With advanced maternal age, the number of egg cell that can be suc ...
, also see
Poor Ovarian Reserve Poor ovarian reserve is a condition of low fertility characterized by 1): low numbers of remaining oocytes in the ovaries or 2) possibly impaired preantral oocyte development or recruitment. Recent research suggests that premature ovarian aging ...
- Ultrasound: antral follicle count (AFC) >6AF - Hormones: FSH, E2, AMH * Premature menopause *
Menopause Menopause, also known as the climacteric, is the time when Menstruation, menstrual periods permanently stop, marking the end of the Human reproduction, reproductive stage for the female human. It typically occurs between the ages of 45 and 5 ...
*Luteal dysfunction *Gonadal dysgenesis (
Turner syndrome Turner syndrome (TS), commonly known as 45,X, or 45,X0,Also written as 45,XO. is a chromosomal disorder in which cells of females have only one X chromosome instead of two, or are partially missing an X chromosome (sex chromosome monosomy) lea ...
)


Tubal (ectopic)/peritoneal factors

*
Endometriosis Endometriosis is a disease in which Tissue (biology), tissue similar to the endometrium, the lining of the uterus, grows in other places in the body, outside the uterus. It occurs in women and a limited number of other female mammals. Endomet ...
(also see
endometriosis and infertility Endometriosis and its complications are a major cause of female infertility. Endometriosis is a dysfunction characterized by the migration of endometrial tissue to areas outside of the endometrium of the uterus. The most common places to find stray ...
) *Pelvic
adhesions Adhesions are fibrous bands that form between tissues and organs, often as a result of injury during surgery. They may be thought of as internal scar tissue that connects tissues not normally connected. Pathophysiology Adhesions form as a nat ...
*
Pelvic inflammatory disease Pelvic inflammatory disease (PID), also known as pelvic inflammatory disorder, is an infection of the upper part of the female reproductive system, mainly the uterus, fallopian tubes, and ovaries, and inside of the pelvis. Often, there may be no ...
(PID, usually due to
chlamydia Chlamydia, or more specifically a chlamydia infection, is a sexually transmitted infection caused by the bacterium ''Chlamydia trachomatis''. Most people who are infected have no symptoms. When symptoms do appear, they may occur only several w ...
) *Tubal dysfunction *Previous
ectopic pregnancy Ectopic pregnancy is a complication of pregnancy in which the embryo attaches outside the uterus. Signs and symptoms classically include abdominal pain and vaginal bleeding, but fewer than 50 percent of affected women have both of these sympto ...
. A randomized study in 2013 came to the result that the rates of intrauterine pregnancy two years after treatment of ectopic pregnancy are approximately 64% with radical surgery, 67% with medication, and 70% with conservative surgery. In comparison, the cumulative pregnancy rate of women under 40 years of age in the general population over two years is over 90%. *
Hydrosalpinx A hydrosalpinx is a condition that occurs when a fallopian tube is blocked and fills with serous or clear fluid near the ovary (distal to the uterus). The blocked tube may become substantially distended giving the tube a characteristic sausage-lik ...
is the most frequent. This happens when there is a presence of fluid on the tubes. We have some ways to test it: Hysterosalphingography, in which we can see both the uterus (Hystero) and the tubes. Hysterosonosalphingography, that we see only the uterus. This test is used to check if the tubes are permeable or if there is any obstacle in the path to the uterus. We have to introduce a liquid contrast via vagina, and we check its path via x-ray. If the tube is blocked, the contrast liquid will be stopped in the tubes, but if it's not blocked, it will end in the abdominal cavity. The flow of this contrast needs peristaltic movements. This blockage can be produced by sexually transmitted infections, previous surgery, peritonitis or endometriosis. •Permeability Hysterosalpingography (HSG) Ultrasoud + Hysterosonosalpingography (HSSG) Chlamydia serology Laparoscopy: methylene blue •Tubal examination (endoscopy): laparoscopy, faloscopy, fertiloscopy


Uterine factors

*
Uterine malformation A uterine malformation is a type of female genital malformation resulting from an abnormal development of the Müllerian duct(s) during embryogenesis. Symptoms range from amenorrhea, infertility, recurrent pregnancy loss, and pain, to normal f ...
s *
Uterine fibroids Uterine fibroids, also known as uterine leiomyomas, fibromyoma or fibroids, are leiomyoma, benign smooth muscle tumors of the uterus, part of the female reproductive system. Most people with fibroids have no symptoms while others may have dysm ...
*
Asherman's syndrome Asherman's syndrome (AS) is an acquired uterine condition that occurs when scar tissue (adhesions) forms inside the uterus and/or the cervix. It is characterized by variable scarring inside the uterine cavity, where in many cases the front and bac ...
* Implantation failure without any known primary cause. It results in negative pregnancy test despite having performed e.g.
embryo transfer Embryo transfer refers to a step in the process of assisted reproduction in which embryos are placed into the uterus of a female with the intent to establish a pregnancy. This technique - which is often used in connection with in vitro fertili ...
. *Myomas Previously, a
bicornuate uterus A bicornuate uterus or bicornate uterus (from the Latin ''cornū'', meaning "horn"), is a type of müllerian anomalies, Müllerian anomaly in the human uterus, where there is a deep indentation at the Uterus#Structure, fundus (top) of the uterus. ...
was thought to be associated with infertility, but recent studies have not confirmed such an association.


Cervical factors

* Cervical stenosis * Antisperm antibodies *Non-receptive cervical
mucus Mucus (, ) is a slippery aqueous secretion produced by, and covering, mucous membranes. It is typically produced from cells found in mucous glands, although it may also originate from mixed glands, which contain both Serous fluid, serous and muc ...


Vaginal factors

*
Vaginismus Vaginismus is a condition in which involuntary muscle spasm interferes with vaginal intercourse or other penetration of the vagina. This often results in pain with attempts at sex. Often it begins when vaginal intercourse is first attempted. ...
*Vaginal obstruction


Interrupted meiosis

Meiosis Meiosis () is a special type of cell division of germ cells in sexually-reproducing organisms that produces the gametes, the sperm or egg cells. It involves two rounds of division that ultimately result in four cells, each with only one c ...
, a special type of
cell division Cell division is the process by which a parent cell (biology), cell divides into two daughter cells. Cell division usually occurs as part of a larger cell cycle in which the cell grows and replicates its chromosome(s) before dividing. In eukar ...
specific to germ cells, produces egg cells in women. During meiosis, accurate segregation of chromosomes must occur during two rounds of division to create, upon
fertilisation Fertilisation or fertilization (see spelling differences), also known as generative fertilisation, syngamy and impregnation, is the fusion of gametes to give rise to a zygote and initiate its development into a new individual organism or of ...
, a
zygote A zygote (; , ) is a eukaryote, eukaryotic cell (biology), cell formed by a fertilization event between two gametes. The zygote's genome is a combination of the DNA in each gamete, and contains all of the genetic information of a new individ ...
with a proper
diploid Ploidy () is the number of complete sets of chromosomes in a cell, and hence the number of possible alleles for autosomal and pseudoautosomal genes. Here ''sets of chromosomes'' refers to the number of maternal and paternal chromosome copies, ...
(euploid) set of chromosomes. About half of all spontaneous abortions are
aneuploid Aneuploidy is the presence of an abnormal number of chromosomes in a cell, for example a human somatic cell having 45 or 47 chromosomes instead of the usual 46. It does not include a difference of one or more complete sets of chromosomes. A cel ...
, that is, have an improper set of chromosomes. Human genetic variants that likely cause dysregulation of critical meiotic processes have been identified in 14 female infertility associated
gene In biology, the word gene has two meanings. The Mendelian gene is a basic unit of heredity. The molecular gene is a sequence of nucleotides in DNA that is transcribed to produce a functional RNA. There are two types of molecular genes: protei ...
s. A major cause of female infertility is premature ovarian insufficiency. This insufficiency is a heterogeneous disease that affects about 1% of women who are under the age of 40. Some instances of female infertility are caused by
DNA repair DNA repair is a collection of processes by which a cell (biology), cell identifies and corrects damage to the DNA molecules that encode its genome. A weakened capacity for DNA repair is a risk factor for the development of cancer. DNA is cons ...
dysregulation during meiosis.


Diagnosis

Diagnosis of infertility begins with a
medical history The medical history, case history, or anamnesis (from Greek: ἀνά, ''aná'', "open", and μνήσις, ''mnesis'', "memory") of a patient is a set of information the physicians collect over medical interviews. It involves the patient, and ev ...
and
physical exam In a physical examination, medical examination, clinical examination, or medical checkup, a medical practitioner examines a patient for any possible medical signs or symptoms of a medical condition. It generally consists of a series of questions ...
. The healthcare provider may order tests, including the following: * Lab tests ** Hormone testing, to measure levels of female hormones at certain times during a
menstrual cycle The menstrual cycle is a series of natural changes in hormone production and the structures of the uterus and ovaries of the female reproductive system that makes pregnancy possible. The ovarian cycle controls the production and release of eg ...
. ** Day 2 or 3 measure of FSH and
estrogen Estrogen (also spelled oestrogen in British English; see spelling differences) is a category of sex hormone responsible for the development and regulation of the female reproductive system and secondary sex characteristics. There are three ...
, to assess
ovarian reserve Ovarian reserve is a term that is used to determine the capacity of the ovary to provide egg cells that are capable of fertilization resulting in a healthy and successful pregnancy. With advanced maternal age, the number of egg cell that can be suc ...
. ** Measurements of thyroid function (a
thyroid stimulating hormone The thyroid, or thyroid gland, is an endocrine gland in vertebrates. In humans, it is a butterfly-shaped gland located in the neck below the Adam's apple. It consists of two connected lobes. The lower two thirds of the lobes are connected by ...
(TSH) level of between 1 and 2 is considered optimal for conception). ** Measurement of
progesterone Progesterone (; P4) is an endogenous steroid and progestogen sex hormone involved in the menstrual cycle, pregnancy, and embryogenesis of humans and other species. It belongs to a group of steroid hormones called the progestogens and is the ma ...
in the second half of the cycle to help confirm ovulation. **
Anti-Müllerian hormone Anti-Müllerian hormone (AMH), also known as Müllerian-inhibiting hormone (MIH), is a glycoprotein hormone structurally related to Activin and inhibin, inhibin and activin from the transforming growth factor beta superfamily, whose key roles a ...
to estimate ovarian reserve. * Examination and imaging ** An
endometrial The endometrium is the inner epithelium, epithelial layer, along with its mucous membrane, of the mammalian uterus. It has a basal layer and a functional layer: the basal layer contains stem cells which regenerate the functional layer. The funct ...
biopsy A biopsy is a medical test commonly performed by a surgeon, interventional radiologist, an interventional radiologist, or an interventional cardiology, interventional cardiologist. The process involves the extraction of sampling (medicine), sample ...
, to verify ovulation and inspect the lining of the uterus. **
Laparoscopy Laparoscopy () is an operation performed in the abdomen or pelvis using small incisions (usually 0.5–1.5 cm) with the aid of a camera. The laparoscope aids diagnosis or therapeutic interventions with a few small cuts in the abdomen.Medli ...
, which allows the provider to inspect the pelvic organs. ** Fertiloscopy, a relatively new surgical technique used for early diagnosis (and immediate treatment). **
Pap smear The Papanicolaou test (abbreviated as Pap test, also known as Pap smear (AE), cervical smear (BE), cervical screening (BE), or smear test (BE)) is a method of cervical screening used to detect potentially precancerous and cancerous processes in ...
, to check for signs of infection. **
Pelvic exam A pelvic examination is the physical examination of the external and internal female pelvic organs. It is frequently used in gynecology for the evaluation of symptoms affecting the female reproductive and urinary tract, such as pain, bleeding, di ...
, to look for abnormalities or
infection An infection is the invasion of tissue (biology), tissues by pathogens, their multiplication, and the reaction of host (biology), host tissues to the infectious agent and the toxins they produce. An infectious disease, also known as a transmis ...
. ** A postcoital test, which is done soon after intercourse to check for problems with sperm surviving in cervical mucous (not commonly used now because of test unreliability). **
Hysterosalpingography Hysterosalpingography (HSG), also known as uterosalpingography, is a radiology, radiologic procedure to investigate the shape of the uterine cavity and the shape and patency of the fallopian tubes. It is a special x-ray procedure using Contrast ...
or sonosalpingography, to check for tube patency **
Sonohysterography Gynecologic ultrasonography or gynecologic sonography refers to the application of medical ultrasonography to the female pelvic organs (specifically the uterus, the ovaries, and the fallopian tubes) as well as the bladder, the adnexa, and the r ...
to check for uterine abnormalities. There are
genetic testing Genetic testing, also known as DNA testing, is used to identify changes in DNA sequence or chromosome structure. Genetic testing can also include measuring the results of genetic changes, such as RNA analysis as an output of gene expression, or ...
techniques under development to detect any mutation in genes associated with female infertility. Initial diagnosis and treatment of infertility is usually made by obstetrician/gynecologists or
women's health nurse practitioner A women's health nurse practitioner (WHNP) is a nurse practitioner that specializes in continuing and comprehensive Women's health, healthcare for women across the lifespan with emphasis on conditions unique to women from menarche through the re ...
s. If initial treatments are unsuccessful, referral is usually made to physicians who are
fellowship A fellow is a title and form of address for distinguished, learned, or skilled individuals in academia, medicine, research, and industry. The exact meaning of the term differs in each field. In learned or professional societies, the term refers ...
trained as reproductive endocrinologists. Reproductive endocrinologists are usually obstetrician/gynecologists with advanced training in reproductive endocrinology and infertility (in North America). These physicians treat reproductive disorders affecting not only women but also men, children, and teens. Usually reproductive endocrinology & infertility medical practices do not see women for general maternity care. The practice is primarily focused on helping their women to conceive and to correct any issues related to recurring pregnancy loss.


Definition

There is no unanimous definition of female infertility, because the definition depends on social and physical characteristics which may vary by culture and situation.
NICE guidelines The National Institute for Health and Care Excellence (NICE) is an executive non-departmental public body of the Department of Health and Social Care. As the national health technology assessment body of England, it is responsible for jud ...
state that: "A woman of reproductive age who has not conceived after 1 year of unprotected vaginal sexual intercourse, in the absence of any known cause of infertility, should be offered further clinical assessment and investigation along with her partner."Fertility: assessment and treatment for people with fertility problems
NICE clinical guideline CG156 - Issued: February 2013
It is recommended that a consultation with a fertility specialist should be made earlier if the woman is aged 36 years or over, or there is a known clinical cause of infertility or a history of predisposing factors for infertility. According to the
World Health Organization The World Health Organization (WHO) is a list of specialized agencies of the United Nations, specialized agency of the United Nations which coordinates responses to international public health issues and emergencies. It is headquartered in Gen ...
(WHO), infertility can be described as the inability to become pregnant, maintain a pregnancy, or carry a pregnancy to live birth.World Health Organization 2013. "Health Topics: Infertility". Available http://www.who.int/topics/infertility/en/. Retrieved November 5, 2013. A clinical definition of infertility by the
WHO The World Health Organization (WHO) is a specialized agency of the United Nations which coordinates responses to international public health issues and emergencies. It is headquartered in Geneva, Switzerland, and has 6 regional offices and 15 ...
and ICMART is "a disease of the reproductive system defined by the failure to achieve a clinical pregnancy after 12 months or more of regular unprotected sexual intercourse." Infertility can further be broken down into primary and secondary infertility.
Primary infertility In biology, infertility is the inability of a male and female organism to reproduce. It is usually not the natural state of a healthy organism that has reached sexual maturity, so children A child () is a human being between the stages of ...
refers to the inability to give birth either because of not being able to become pregnant, or carry a child to live birth, which may include miscarriage or a stillborn child. World Health Organization 2013."Sexual and reproductive health: Infertility definitions and terminology". Availabl

Retrieved November 5, 2013.
Secondary infertility refers to the inability to conceive or give birth when there was a previous pregnancy or live birth.


Prevention

Acquired female infertility may be prevented through identified interventions: * ''Maintaining a healthy lifestyle.'' Excessive exercise, consumption of
caffeine Caffeine is a central nervous system (CNS) stimulant of the methylxanthine chemical classification, class and is the most commonly consumed Psychoactive drug, psychoactive substance globally. It is mainly used for its eugeroic (wakefulness pr ...
and
alcohol Alcohol may refer to: Common uses * Alcohol (chemistry), a class of compounds * Ethanol, one of several alcohols, commonly known as alcohol in everyday life ** Alcohol (drug), intoxicant found in alcoholic beverages ** Alcoholic beverage, an alco ...
, and
smoking Smoking is a practice in which a substance is combusted, and the resulting smoke is typically inhaled to be tasted and absorbed into the bloodstream of a person. Most commonly, the substance used is the dried leaves of the tobacco plant, whi ...
have all been associated with decreased fertility. Eating a well-balanced, nutritious diet, with plenty of fresh
fruit In botany, a fruit is the seed-bearing structure in flowering plants (angiosperms) that is formed from the ovary after flowering. Fruits are the means by which angiosperms disseminate their seeds. Edible fruits in particular have long propaga ...
s and
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 ...
s, and maintaining a normal weight, on the other hand, have been associated with better fertility prospects. * ''Treating or preventing existing diseases.'' Identifying and controlling chronic diseases such as
diabetes Diabetes mellitus, commonly known as diabetes, is a group of common endocrine diseases characterized by sustained high blood sugar levels. Diabetes is due to either the pancreas not producing enough of the hormone insulin, or the cells of th ...
and
hypothyroidism Hypothyroidism is an endocrine disease in which the thyroid gland does not produce enough thyroid hormones. It can cause a number of symptoms, such as cold intolerance, poor ability to tolerate cold, fatigue, extreme fatigue, muscle aches, co ...
increases fertility prospects. Lifelong practice of
safer sex Safer or SAFER may refer to: * FSO ''Safer'', a Yemeni floating oil storage and offloading vessel * Safer (surname) * Safar or safer, the second month of the Islamic calendar * As an acronym: ** SAFER, an initiative of the World Health Organizat ...
reduces the likelihood that
sexually transmitted infection A sexually transmitted infection (STI), also referred to as a sexually transmitted disease (STD) and the older term venereal disease (VD), is an infection that is Transmission (medicine), spread by Human sexual activity, sexual activity, e ...
s will impair fertility; obtaining prompt treatment for sexually transmitted infections reduces the likelihood that such infections will do significant damage. Regular
physical examination In a physical examination, medical examination, clinical examination, or medical checkup, a medical practitioner examines a patient for any possible medical signs or symptoms of a Disease, medical condition. It generally consists of a series of ...
s (including pap smears) help detect early signs of infections or abnormalities. * ''Not delaying parenthood.'' Fertility does not ultimately cease before menopause, but it starts declining after age 27 and drops at a somewhat greater rate after age 35. Women whose biological mothers had unusual or abnormal issues related to conceiving may be at particular risk for some conditions, such as premature menopause, that can be mitigated by not delaying parenthood. * '' Egg freezing.'' A woman can freeze her eggs preserve her fertility. By using egg freezing while in the peak reproductive years, a woman's
oocytes An oocyte (, oöcyte, or ovocyte) is a female gametocyte or germ cell involved in reproduction. In other words, it is an immature ovum, or egg cell. An oocyte is produced in a female fetus in the ovary during female gametogenesis. The female ger ...
are cryogenically frozen and ready for her use later in life, reducing her chances of female infertility.


Treatment

There is no method to reverse
advanced maternal age Advanced maternal age, in a broad sense, is the instance of a woman being of an older age at a stage of reproduction, although there are various definitions of specific age and stage of reproduction. The variability in definitions is in part e ...
, but there are
assisted reproductive technologies Assisted reproductive technology (ART) includes medical procedures used primarily to address infertility. This subject involves procedures such as in vitro fertilization (IVF), intracytoplasmic sperm injection (ICSI), and cryopreservation of gamet ...
for many causes of infertility in pre-menopausal women, including: *
Ovulation induction Ovulation induction is the stimulation of ovulation by medication. It is usually used in the sense of stimulation of the development of ovarian follicles to reverse anovulation or oligoovulation. Scope The term ''ovulation induction'' can p ...
for
anovulation Anovulation is when the ovaries do not release an oocyte during a menstrual cycle. Therefore, ovulation does not take place. However, a woman who does not ovulate at each menstrual cycle is not necessarily going through menopause. Chronic anovulat ...
*
In vitro fertilization In vitro fertilisation (IVF) is a process of fertilisation in which an egg is combined with sperm in vitro ("in glass"). The process involves monitoring and stimulating the ovulatory process, then removing an ovum or ova (egg or eggs) from ...
in for example tubal abnormalities


Epidemiology

Female infertility varies widely by geographic location around the world. In 2010, there were around 48.5 million infertile couples worldwide, and from 1990 to 2010 there was little change in levels of infertility in most of the world. The highest female infertility rates were found in
Eastern Europe Eastern Europe is a subregion of the Europe, European continent. As a largely ambiguous term, it has a wide range of geopolitical, geographical, ethnic, cultural and socio-economic connotations. Its eastern boundary is marked by the Ural Mountain ...
, the
Middle East and North Africa The Middle East and North Africa (MENA), also referred to as West Asia and North Africa (WANA) or South West Asia and North Africa (SWANA), is a geographic region which comprises the Middle East (also called West Asia) and North Africa together ...
, and southern
Central Asia Central Asia is a region of Asia consisting of Kazakhstan, Kyrgyzstan, Tajikistan, Turkmenistan, and Uzbekistan. The countries as a group are also colloquially referred to as the "-stans" as all have names ending with the Persian language, Pers ...
. Countries with the lowest rates of female infertility are found in
Latin America Latin America is the cultural region of the Americas where Romance languages are predominantly spoken, primarily Spanish language, Spanish and Portuguese language, Portuguese. Latin America is defined according to cultural identity, not geogr ...
and
East Asia East Asia is a geocultural region of Asia. It includes China, Japan, Mongolia, North Korea, South Korea, and Taiwan, plus two special administrative regions of China, Hong Kong and Macau. The economies of Economy of China, China, Economy of Ja ...
.
North Africa North Africa (sometimes Northern Africa) is a region encompassing the northern portion of the African continent. There is no singularly accepted scope for the region. However, it is sometimes defined as stretching from the Atlantic shores of t ...
, the
Middle East The Middle East (term originally coined in English language) is a geopolitical region encompassing the Arabian Peninsula, the Levant, Turkey, Egypt, Iran, and Iraq. The term came into widespread usage by the United Kingdom and western Eur ...
,
Oceania Oceania ( , ) is a region, geographical region including Australasia, Melanesia, Micronesia, and Polynesia. Outside of the English-speaking world, Oceania is generally considered a continent, while Mainland Australia is regarded as its co ...
, and
Sub-Saharan Africa Sub-Saharan Africa is the area and regions of the continent of Africa that lie south of the Sahara. These include Central Africa, East Africa, Southern Africa, and West Africa. Geopolitically, in addition to the list of sovereign states and ...
also had high rates of female infertility. The prevalence of primary infertility has increased since 1990, while secondary infertility declined. Rates declined in high-income, Central/Eastern Europe, and Central Asia regions, but the prevalence of infertility remained unchanged.


Europe

From 1990-2010,
Russia Russia, or the Russian Federation, is a country spanning Eastern Europe and North Asia. It is the list of countries and dependencies by area, largest country in the world, and extends across Time in Russia, eleven time zones, sharing Borders ...
n and Ukrainian women had the highest primary infertility rate in the world, with a primary fertility rate near 3% or exceeding 3%. Secondary infertility rates in this region were also among the highest in the world, exceeding 13%. Thirteen countries in
Eastern Europe Eastern Europe is a subregion of the Europe, European continent. As a largely ambiguous term, it has a wide range of geopolitical, geographical, ethnic, cultural and socio-economic connotations. Its eastern boundary is marked by the Ural Mountain ...
had the highest infertility rates in this region, and they were also among the highest in the world.


Africa

Sub-Saharan Africa Sub-Saharan Africa is the area and regions of the continent of Africa that lie south of the Sahara. These include Central Africa, East Africa, Southern Africa, and West Africa. Geopolitically, in addition to the list of sovereign states and ...
has had decreasing levels of primary infertility from 1990 to 2010. Within the Sub-Saharan region, rates were lowest in Kenya, Zimbabwe, and Rwanda, while the highest rates were in Guinea, Mozambique, Angola, Gabon, and Cameroon along with Northern Africa near the Middle East. According to a 2004 DHS report, rates in Africa were highest in Middle and Sub-Saharan Africa, with East Africa's rates close behind.


Asia

In Asia, the highest rates of combined secondary and primary infertility were in southern
Central Asia Central Asia is a region of Asia consisting of Kazakhstan, Kyrgyzstan, Tajikistan, Turkmenistan, and Uzbekistan. The countries as a group are also colloquially referred to as the "-stans" as all have names ending with the Persian language, Pers ...
, followed by
Southeast Asia Southeast Asia is the geographical United Nations geoscheme for Asia#South-eastern Asia, southeastern region of Asia, consisting of the regions that are situated south of China, east of the Indian subcontinent, and northwest of the Mainland Au ...
.


Latin America and Caribbean

The prevalence of female infertility in the
Latin America Latin America is the cultural region of the Americas where Romance languages are predominantly spoken, primarily Spanish language, Spanish and Portuguese language, Portuguese. Latin America is defined according to cultural identity, not geogr ...
/
Caribbean The Caribbean ( , ; ; ; ) is a region in the middle of the Americas centered around the Caribbean Sea in the Atlantic Ocean, North Atlantic Ocean, mostly overlapping with the West Indies. Bordered by North America to the north, Central America ...
region is typically lower than the global prevalence. However, the greatest rates occurred in Jamaica, Suriname, Haiti, and Trinidad and Tobago. Central and Western Latin America has some of the lowest rates of prevalence. The highest regions in Latin America and the Caribbean were in the Caribbean Islands and in less developed countries.


Society and culture


Social stigma

Social stigma due to
infertility In biology, infertility is the inability of a male and female organism to Sexual reproduction, reproduce. It is usually not the natural state of a healthy organism that has reached sexual maturity, so children who have not undergone puberty, whi ...
is seen in many cultures throughout the world in varying forms. Often, when women cannot conceive, the blame is put on them, even when approximately 50% of
infertility In biology, infertility is the inability of a male and female organism to Sexual reproduction, reproduce. It is usually not the natural state of a healthy organism that has reached sexual maturity, so children who have not undergone puberty, whi ...
issues come from the man. In addition, many societies only tend to value a woman if she is able to produce at least one child, and a marriage can be considered a failure when the couple cannot conceive. The act of conceiving a child can be linked to the couple's consummation of marriage, and reflect their social role in society. This is seen in the "African infertility belt", where infertility is prevalent in Africa which includes countries spanning from
Tanzania Tanzania, officially the United Republic of Tanzania, is a country in East Africa within the African Great Lakes region. It is bordered by Uganda to the northwest; Kenya to the northeast; the Indian Ocean to the east; Mozambique and Malawi to t ...
in the east to
Gabon Gabon ( ; ), officially the Gabonese Republic (), is a country on the Atlantic coast of Central Africa, on the equator, bordered by Equatorial Guinea to the northwest, Cameroon to the north, the Republic of the Congo to the east and south, and ...
in the west. In this region, infertility is highly stigmatized and can be considered a failure of the couple to their societies.Robert J. Leke, Jemimah A. Oduma, Susana Bassol-Mayagoitia, Angela Maria Bacha, and Kenneth M. Grigor. "Regional and Geographical Variations in Infertility: Effects of Environmental, Cultural, and Socioeconomic Factors" Environmental Health Perspectives Supplements (101) (Suppl. 2): 73-80 (1993). This is demonstrated in
Uganda Uganda, officially the Republic of Uganda, is a landlocked country in East Africa. It is bordered to the east by Kenya, to the north by South Sudan, to the west by the Democratic Republic of the Congo, to the south-west by Rwanda, and to the ...
and
Nigeria Nigeria, officially the Federal Republic of Nigeria, is a country in West Africa. It is situated between the Sahel to the north and the Gulf of Guinea in the Atlantic Ocean to the south. It covers an area of . With Demographics of Nigeria, ...
where there is a great pressure put on
childbearing Pregnancy is the time during which one or more offspring gestates inside a woman's uterus. A multiple pregnancy involves more than one offspring, such as with twins. Conception usually occurs following vaginal intercourse, but can also o ...
and its social implications. This is also seen in some Muslim societies including
Egypt Egypt ( , ), officially the Arab Republic of Egypt, is a country spanning the Northeast Africa, northeast corner of Africa and Western Asia, southwest corner of Asia via the Sinai Peninsula. It is bordered by the Mediterranean Sea to northe ...
and Pakistan. In the United States, and all over the world, infertility and women's infertility at large is an invisible yet debilitating disease that is stigmatized and looked down upon. But, in recent years many have begun to sue organizations for infertility insurance coverage, as the Americans with Disabilities Act (ADA) has recognized infertility as a disability. This however adds another stigmatization to women suffering from infertility as the word disability has a negative connotation in various world societies. 7 Wealth is sometimes measured by the number of children a woman has, as well as inheritance of property.Dyer, S. J. (2012). "The economic impact of infertility on women in developing countries – a systematic review." FVV in ObGyn: 38-45. Children can influence financial security in many ways. In Nigeria and
Cameroon Cameroon, officially the Republic of Cameroon, is a country in Central Africa. It shares boundaries with Nigeria to the west and north, Chad to the northeast, the Central African Republic to the east, and Equatorial Guinea, Gabon, and the R ...
,
land claim A land claim is "the pursuit of recognized territorial ownership by a group or individual". The phrase is usually only used with respect to disputed or unresolved land claims. Some types of land claims include Aboriginal title, aboriginal land cla ...
s are decided by the number of children. Also, in some Sub-Saharan countries women may be denied
inheritance Inheritance is the practice of receiving private property, titles, debts, entitlements, privileges, rights, and obligations upon the death of an individual. The rules of inheritance differ among societies and have changed over time. Offi ...
if she did not bear any children In some African and Asian countries a husband can deprive his infertile wife of food, shelter and other basic necessities like clothing. In Cameroon, a woman may lose access to land from her husband and left on her own in old age. In many cases, a woman who cannot bear children is excluded from social and cultural events including traditional ceremonies. This stigmatization is seen in
Mozambique Mozambique, officially the Republic of Mozambique, is a country located in Southeast Africa bordered by the Indian Ocean to the east, Tanzania to the north, Malawi and Zambia to the northwest, Zimbabwe to the west, and Eswatini and South Afr ...
and Nigeria where infertile women have been treated as outcasts to society. This is a humiliating practice which devalues infertile women in society.Whiteford, L. M. (1995). "STIGMA: THE HIDDEN BURDEN OF INFERTILITY." Sot. Sci. Med. (40;1): 27-36. In the Makua tradition, pregnancy and birth are considered major life events for a woman, with the ceremonies of nthaa'ra and ntha'ara no mwana, which can only be attended by women who have been pregnant and have had a baby. The effect of infertility can lead to social shaming from internal and
social norms A social norm is a shared standard of acceptance, acceptable behavior by a group. Social norms can both be informal understandings that govern the behavior of members of a society, as well as be codified into wikt:rule, rules and laws. Social norma ...
surrounding pregnancy, which affects women around the world. When pregnancy is considered such an important event in life, and considered a "socially unacceptable condition", it can lead to a search for treatment in the form of traditional healers and expensive Western treatments. The limited access to treatment in many areas can lead to extreme and sometimes illegal acts in order to produce a child.


Marital role

Men in some countries may find another wife when their first cannot produce a child, hoping that by sleeping with more women he will be able to produce his own child.Araoye, M. O. (2003). "Epidemiology of infertility: social problems of the infertile couples." West African journal of medicine (22;2): 190-196.Inhorn, M. C. (2003). "Global infertility and the globalization of new reproductive technologies: illustrations from Egypt." Social Science & Medicine (56): 1837 - 1851. This can be prevalent in some societies, including Cameroon, Nigeria, Mozambique, Egypt, Botswana, and Bangladesh, among many more where polygamy is more common and more socially acceptable. In couples that are unsuccessful in conceiving, divorce rates are roughly 3.5 times higher than those of couples who are fertile. This was based on those with female infertility. 8 In some cultures, including Botswana and Nigeria, women can select a woman with whom she allows her husband to sleep with in hopes of conceiving a child. Women who are desperate for children may compromise with her husband to select a woman and accept duties of taking care of the children to feel accepted and useful in society.Mogobe, D. K. (2005). "Denying and Preserving Self: Batswana Women's Experiences of Infertility." African Journal of Reproductive Health (9;2): 26-37. Women may also sleep with other men in hopes of becoming pregnant.Gerrits, T. (1997). "Social and cultural aspects of infertility in Mozambique." Patient Education and Counseling (31): 39-48. This can be done for many reasons including advice from a traditional healer, or finding if another man was "more compatible". In many cases, the husband was not aware of the extra sexual relations and would not be informed if a woman became pregnant by another man. This is not as culturally acceptable however, and can contribute to the gendered suffering of women who have fewer options to become pregnant on their own as opposed to men. Men and women can also turn to
divorce Divorce (also known as dissolution of marriage) is the process of terminating a marriage or marital union. Divorce usually entails the canceling or reorganising of the legal duties and responsibilities of marriage, thus dissolving the M ...
in attempt to find a new partner with whom to bear a child. Infertility in many cultures is a reason for divorce, and a way for a man or woman to increase his/her chances of producing an heir. When a woman is divorced, she can lose her security that often comes with land, wealth, and a family. This can ruin marriages and can lead to distrust in the marriage. The increase of sexual partners can potentially result with the spread of disease including
HIV/AIDS The HIV, human immunodeficiency virus (HIV) is a retrovirus that attacks the immune system. Without treatment, it can lead to a spectrum of conditions including acquired immunodeficiency syndrome (AIDS). It is a Preventive healthcare, pr ...
, and can actually contribute to future generations of infertility.


Domestic abuse

The emotional strain and stress that comes with infertility in the household can lead to the mistreatment and
domestic abuse Domestic violence is violence that occurs in a domestic setting, such as in a marriage or cohabitation. In a broader sense, abuse including nonphysical abuse in such settings is called domestic abuse. The term "domestic violence" is often use ...
of a woman. The devaluation of a wife due to her inability to conceive can lead to domestic abuse and emotional trauma such as
victim blaming Victim blaming occurs when the victim of a crime or any wrongful act is held entirely or partially at fault for the harm that befell them. There is historical and current prejudice against the victims of domestic violence and sex crimes, such as ...
. Women are sometimes or often blamed as the cause of a couples' infertility, which can lead to
emotional abuse Emotions are physical and mental states brought on by neurophysiological changes, variously associated with thoughts, feelings, behavioral responses, and a degree of pleasure or displeasure. There is no scientific consensus on a definit ...
, anxiety, and shame. In addition, blame for not being able to conceive is often put on the female, even if it is the man who is infertile. Women who are not able to conceive can be starved, beaten, and may be neglected financially by her husband as if she had no child bearing use to him. The physical abuse related to infertility may result from this and the
emotional stress In psychology, stress is a feeling of emotional strain and pressure. Stress is a form of psychological and mental discomfort. Small amounts of stress may be beneficial, as it can improve athletic performance, motivation and reaction to the env ...
that comes with it. In some countries, the emotional and physical abuses that come with infertility can potentially lead to
assault In the terminology of law, an assault is the act of causing physical harm or consent, unwanted physical contact to another person, or, in some legal definitions, the threat or attempt to do so. It is both a crime and a tort and, therefore, may ...
,
murder Murder is the unlawful killing of another human without justification (jurisprudence), justification or valid excuse (legal), excuse committed with the necessary Intention (criminal law), intention as defined by the law in a specific jurisd ...
, and
suicide Suicide is the act of intentionally causing one's own death. Risk factors for suicide include mental disorders, physical disorders, and substance abuse. Some suicides are impulsive acts driven by stress (such as from financial or ac ...
.Omberlet, W. (2012). "Global access to infertility care in developing countries: a case of human rights, equity and social justice " FVV in ObGyn: 7-16.


Mental and psychological impact

Many infertile women tend to cope with immense stress and
social stigma Stigma, originally referring to the visible marking of people considered inferior, has evolved to mean a negative perception or sense of disapproval that a society places on a group or individual based on certain characteristics such as their ...
behind their condition, which can lead to considerable
mental distress Mental distress or psychological distress encompasses the symptoms and experiences of a person's internal life that are commonly held to be troubling, confusing or out of the ordinary. Mental distress can potentially lead to a change of behavior, ...
.McQuillian, J., Greil, A.L., White, L., Jacob, M.C. (2003). "Frustrated Fertility: Infertility and Psychological Distress among Women." Journal of Marriage and Family (65;4): 1007-1018. The long-term stress involved in attempting to conceive a child and the social pressures behind giving birth can lead to emotional distress that may manifest as
mental disease A mental disorder, also referred to as a mental illness, a mental health condition, or a psychiatric disability, is a behavioral or mental pattern that causes significant distress or impairment of personal functioning. A mental disorder is ...
.Reproductive Health Outlook (2002). "Infertility: Overview and lessons learned." Women with infertility might deal with psychological stressors such as denial, anger, grief, guilt, and depression. There can be considerable social shaming that can lead to intense feelings of sadness and frustration that potentially contribute to depression and
suicide Suicide is the act of intentionally causing one's own death. Risk factors for suicide include mental disorders, physical disorders, and substance abuse. Some suicides are impulsive acts driven by stress (such as from financial or ac ...
. The implications behind infertility bear huge consequences for the
mental health Mental health is often mistakenly equated with the absence of mental illness. However, mental health refers to a person's overall emotional, psychological, and social well-being. It influences how individuals think, feel, and behave, and how t ...
of an infertile woman because of the social pressures and personal
grief Grief is the response to the loss of something deemed important, particularly to the death of a person to whom or animal to which a Human bonding, bond or affection was formed. Although conventionally focused on the emotional response to loss, ...
behind being unable to bear children. The range of psychological issues pertaining to infertility in women is vast and can include inferiority complex, stress with interpersonal relationships, and possibly major depression and or anxiety. With the impacts of infertility on social life, cultural significance, and psychological factors, “infertility has been classified as one of the greatest stressors of life.” 6


Emotional impact of infertility treatment

Many women have reported finding treatment for infertility stressful and a cause of relationship difficulties with their partners. The fear of failure was the most important barrier to treatment. Females, in studied cases, typically experience more adverse effects of infertility and treatments than do males. The psychological support is fundamental to limit the possibility to drop-out from infertility treatment and reduce the distress level which is strongly associated with lower pregnancy rates. In addition some medications (in particular clomifene citrate) used in the treatment have several side effects which may be an important risk factor for the development of depression.


See also

*
Advanced maternal age Advanced maternal age, in a broad sense, is the instance of a woman being of an older age at a stage of reproduction, although there are various definitions of specific age and stage of reproduction. The variability in definitions is in part e ...
*
Fertility Fertility in colloquial terms refers the ability to have offspring. In demographic contexts, fertility refers to the actual production of offspring, rather than the physical capability to reproduce, which is termed fecundity. The fertility rate ...
*
Infertility In biology, infertility is the inability of a male and female organism to Sexual reproduction, reproduce. It is usually not the natural state of a healthy organism that has reached sexual maturity, so children who have not undergone puberty, whi ...
*
Male infertility Male infertility refers to a sexually mature male's inability to impregnate a fertile female. Male infertility can wholly or partially account for 40% of infertility among couples who are trying to have children. "A problem with the male is the s ...
* Oncofertility


References


Additional sources

* Raval, H.; Slade, P.; Buck, P.; Lieberman, B. E. (1987-10). "The impact of infertility on emotions and the marital and sexual relationship". Journal of Reproductive and Infant Psychology. 5 (4): 221–234. . . * Khan, Ambreen Rashid (March 2019). "Impact of Infertility on Mental Health of Women" (PDF). The International Journal of Indian Psychology. 7 (1): 804–809. * Sternke, Elizabeth A.; Abrahamson, Kathleen (2015-03-01). "Perceptions of Women with Infertility on Stigma and Disability". Sexuality and Disability. 33 (1): 3–17.


External links

{{DEFAULTSORT:Female Infertility Fertility medicine * Fertility Noninflammatory disorders of female genital tract