In law, medicine, and statistics, cause of death is an official determination of the conditions resulting in a
human
Humans (''Homo sapiens'') or modern humans are the most common and widespread species of primate, and the last surviving species of the genus ''Homo''. They are Hominidae, great apes characterized by their Prehistory of nakedness and clothing ...
's
death
Death is the end of life; the irreversible cessation of all biological functions that sustain a living organism. Death eventually and inevitably occurs in all organisms. The remains of a former organism normally begin to decompose sh ...
, which may be recorded on a
death certificate. A cause of death is determined by a
medical examiner. In rare cases, an
autopsy
An autopsy (also referred to as post-mortem examination, obduction, necropsy, or autopsia cadaverum) is a surgical procedure that consists of a thorough examination of a corpse by dissection to determine the cause, mode, and manner of deat ...
needs to be performed by a pathologist. The cause of death is a specific
disease
A disease is a particular abnormal condition that adversely affects the structure or function (biology), function of all or part of an organism and is not immediately due to any external injury. Diseases are often known to be medical condi ...
or
injury
Injury is physiological damage to the living tissue of any organism, whether in humans, in other animals, or in plants.
Injuries can be caused in many ways, including mechanically with penetration by sharp objects such as teeth or with ...
, in contrast to the
manner of death, which is a small number of categories like "natural", "
accident
An accident is an unintended, normally unwanted event that was not deliberately caused by humans. The term ''accident'' implies that the event may have been caused by Risk assessment, unrecognized or unaddressed risks. Many researchers, insurers ...
", "
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 ...
", and "
homicide
Homicide is an act in which a person causes the death of another person. A homicide requires only a Volition (psychology), volitional act, or an omission, that causes the death of another, and thus a homicide may result from Accident, accidenta ...
", each with different legal implications.
International Classification of Disease (ICD) codes can be used to record manner and cause of death in a systematic way that makes it easy to compile statistics and more feasible to compare events across jurisdictions.
[National Center for Health Statistics �]
Classification of Death and Injury Resulting from Terrorism – How are external cause of injury codes assigned?
Centers for Disease Control and Prevention
The Centers for Disease Control and Prevention (CDC) is the National public health institutes, national public health agency of the United States. It is a Federal agencies of the United States, United States federal agency under the United S ...
. retrieved July 7 2019
Accuracy concerns
A study published in ''
Preventing Chronic Disease'' found that only one-third of
New York City
New York, often called New York City (NYC), is the most populous city in the United States, located at the southern tip of New York State on one of the world's largest natural harbors. The city comprises five boroughs, each coextensive w ...
resident physicians reported believing that the present system of documentation was accurate. Half reported the inability to record "what they felt to be the correct cause of death", citing reasons such as technical limitation and instruction to "put something else". Nearly four-fifths reported being unaware that determinations of "probable", "presumed", or "undetermined" could be made, and fewer than three percent reported ever updating a death certificate when conflicting lab results or other new information became available, and
cardiovascular disease
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, rheumati ...
was indicated as "the most frequent diagnosis inaccurately reported".
Causes of death are sometimes disputed by relatives or members of the public, particularly when some degree of uncertainty or ambiguity exists in relation to the cause of death. On occasion, such disputes may result from, or sometimes instigate, a
conspiracy theory
A conspiracy theory is an explanation for an event or situation that asserts the existence of a conspiracy (generally by powerful sinister groups, often political in motivation), when other explanations are more probable.Additional sources:
* ...
.
Public perception of the relative risk of death by various causes is biased by personal experience and by media coverage. The phrase "
hierarchy of death" is sometimes used to describe the factors that cause some deaths to get more attention than others.
Though some opponents of
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 ...
consider it a cause of death, conventionally medical authorities do not confer personhood on fetuses that are not viable outside the womb, and thus abortions are not reported as deaths in these statistics.
Aging
Health departments discourage listing "
old age
Old age is the range of ages for people nearing and surpassing life expectancy. People who are of old age are also referred to as: old people, elderly, elders, senior citizens, seniors or older adults. Old age is not a definite biological sta ...
" as the cause of death because doing so does not benefit
public health
Public health is "the science and art of preventing disease, prolonging life and promoting health through the organized efforts and informed choices of society, organizations, public and private, communities and individuals". Analyzing the de ...
or
medical research
Medical research (or biomedical research), also known as health research, refers to the process of using scientific methods with the aim to produce knowledge about human diseases, the prevention and treatment of illness, and the promotion of ...
.
Aging
Ageing (or aging in American English) is the process of becoming Old age, older until death. The term refers mainly to humans, many other animals, and fungi; whereas for example, bacteria, perennial plants and some simple animals are potentiall ...
is not a scientifically recognized cause of death; it is currently considered that there is always a more direct cause (although it may be unknown in certain cases and could be one of a number of
aging-associated diseases). As an indirect or non-determinative factor,
biological aging is the biggest contributor to deaths worldwide. It is estimated that of the roughly 150,000 people who die each day across the globe, about two thirds—100,000 per day—die of age-related causes.
In industrialized nations the proportion is much higher, reaching 90%.
In recent years, there have been official claims about a possibility of recognizing aging itself as a
disease
A disease is a particular abnormal condition that adversely affects the structure or function (biology), function of all or part of an organism and is not immediately due to any external injury. Diseases are often known to be medical condi ...
. If this would be so, the situation would change.
Emotional death
There are also popular notions that someone can be "
scared to death" or die of
loneliness or
heartbreak. Experiencing fear, extreme stress, or both can cause changes in the body that can, in turn, lead to death. For example, it is possible that overstimulation of the
vagus nerve
The vagus nerve, also known as the tenth cranial nerve (CN X), plays a crucial role in the autonomic nervous system, which is responsible for regulating involuntary functions within the human body. This nerve carries both sensory and motor fibe ...
—which decreases heart rate in a mechanism related to the behavior of
apparent death
Apparent death is a behavior in which animals take on the appearance of being death, dead. It is an immobile state most often triggered by a predatory attack and can be found in a wide range of animals from insects and crustaceans to mammals, b ...
(also known as "playing dead" and "playing possum")—is the cause of documented cases of
psychogenic death. The
flight or fight response
The fight-or-flight or the fight-flight-freeze-or-fawn (also called hyperarousal or the acute stress response) is a physiological reaction that occurs in response to a perceived Psychological trauma, harmful event, Trauma (medicine), attack, or t ...
to fear or stress has the opposite effect, increasing heart rate through
stress hormones, and can cause cardiovascular problems (especially in those with pre-existing conditions). This is the proposed mechanism for the observed increase in the death rate due to cardiac arrest after widely experienced acutely stressful events such as terrorism, military attacks, and natural disasters (even among those who are not in the affected area) and for documented deaths in muggings and other frightening events which caused no traumatic physical harm. The proximal medical cause of death in these cases is likely to be recorded as cardiac failure or vagal inhibition (which also has other potential causes such as blows to certain parts of the body and nerve injuries).
One specific condition observed to result from acute stress,
takotsubo cardiomyopathy, is nicknamed "broken heart syndrome", but the stress need not be relationship-related and need not be negative.
See also
*
Death by misadventure
*
List of causes of death by rate
The following is a list of the causes of human deaths worldwide for different years arranged by their associated mortality rates. Some causes listed include deaths also included in more specific subordinate causes, and some causes are omitted, ...
*
List of preventable causes of death
Preventable causes of death are causes of death related to risk factors which could have been avoided. The World Health Organization has traditionally classified death according to the primary type of disease or injury. However, causes of death ...
*
Manner of death
*
Proximate and ultimate causation
References
{{Authority control
Epidemiology
Legal terminology
Medical terminology
Statistical data coding
Civil registration and vital statistics