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Suicide is the act of intentionally causing one's own
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 ...
. Risk factors for suicide include
mental disorder 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 ...
s,
physical disorder Physical disorder, as a medical term, is poorly defined, and typically used in contrast to a mental disorder or a genetic disorder. The term mental disorder is heavily used in psychiatric medicine, and is defined in some psychiatric medicine t ...
s, and
substance abuse Substance misuse, also known as drug misuse or, in older vernacular, substance abuse, is the use of a drug in amounts or by methods that are harmful to the individual or others. It is a form of substance-related disorder, differing definition ...
. Some suicides are impulsive acts driven by stress (such as from financial or academic difficulties), relationship problems (such as
breakup A relationship breakup, breakup, or break-up is the ending of a Interpersonal relationship, relationship. The act is commonly termed "dumping omeone in slang when it is initiated by one partner. The term is less likely to be applied to a ma ...
s or
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 ...
s), or
harassment Harassment covers a wide range of behaviors of an offensive nature. It is commonly understood as behavior that demeans, humiliates, and intimidates a person, and it is characteristically identified by its unlikelihood in terms of social and ...
and
bullying Bullying is the use of force, coercion, Suffering, hurtful teasing, comments, or threats, in order to abuse, aggression, aggressively wikt:domination, dominate, or intimidate one or more others. The behavior is often repeated and habitual. On ...
. Those who have previously attempted suicide are at a higher risk for future attempts. Effective
suicide prevention Suicide prevention is a collection of efforts to reduce the risk of suicide. Suicide is often preventable, and the efforts to prevent it may occur at the individual, relationship, community, and society level. Suicide is a serious public healt ...
efforts include limiting access to methods of suicide such as firearms, drugs, and poisons; treating mental disorders and substance abuse; careful
media Media may refer to: Communication * Means of communication, tools and channels used to deliver information or data ** Advertising media, various media, content, buying and placement for advertising ** Interactive media, media that is inter ...
reporting about suicide; improving economic conditions; and
dialectical behaviour therapy Dialectical behavior therapy (DBT) is an evidence-based psychotherapy that began with efforts to treat personality disorders and interpersonal conflicts. Evidence suggests that DBT can be useful in treating mood disorders and suicidal ideati ...
(DBT). Although
crisis hotline A crisis hotline is a phone number people can call to get immediate emergency telephone counseling, usually by trained volunteers. The first such service was founded in England in 1951 and such hotlines have existed in most major cities of the E ...
s, like
988 Year 988 ( CMLXXXVIII) was a leap year starting on Sunday of the Julian calendar. Events By place Byzantine Empire * Fall – Emperor Basil II, supported by a contingent of 6,000 Varangians (the future Varangian Guard), organiz ...
in
North America North America is a continent in the Northern Hemisphere, Northern and Western Hemisphere, Western hemispheres. North America is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South Ameri ...
and 13 11 14 in
Australia Australia, officially the Commonwealth of Australia, is a country comprising mainland Australia, the mainland of the Australia (continent), Australian continent, the island of Tasmania and list of islands of Australia, numerous smaller isl ...
, are common resources, their effectiveness has not been well studied. Suicide is the 10th leading cause of death worldwide, accounting for approximately 1.5% of total deaths. In a given year, this is roughly 12 per 100,000 people. Though suicides resulted in 828,000 deaths globally in 2015, an increase from 712,000 deaths in 1990, the age-standardized death rate decreased by 23.3%.. For the number 828,000, see Table 5, line "Self-harm", second column (year 2015). For the number 712,000, see Table 2, line "Self-harm", first column (year 1990) By gender, suicide rates are generally higher among men than women, ranging from 1.5 times higher in the
developing world A developing country is a sovereign state with a less-developed industrial base and a lower Human Development Index (HDI) relative to developed countries. However, this definition is not universally agreed upon. There is also no clear agreeme ...
to 3.5 times higher in the
developed world A developed country, or advanced country, is a sovereign state that has a high quality of life, developed economy, and advanced technological infrastructure relative to other less industrialized nations. Most commonly, the criteria for eval ...
; in the
Western world The Western world, also known as the West, primarily refers to various nations and state (polity), states in Western Europe, Northern America, and Australasia; with some debate as to whether those in Eastern Europe and Latin America also const ...
, non-fatal
suicide attempt A suicide attempt is an act in which an individual tries to kill themselves but survives. Mental health professionals discourage describing suicide attempts as "failed" or "unsuccessful", as doing so may imply that a suicide resulting in death is ...
s are more common among young people and women. Suicide is generally most common among those over the age of 70; however, in certain countries, those aged between 15 and 30 are at the highest risk. Europe had the highest rates of suicide by region in 2015. There are an estimated 10 to 20 million non-fatal attempted suicides every year. Non-fatal suicide attempts may lead to injury and long-term disabilities. The most commonly adopted method of suicide varies from country to country and is partly related to the availability of effective means.
Assisted suicide Assisted suicide, sometimes restricted to the context of physician-assisted suicide (PAS), is the process by which a person, with the help of others, takes actions to end their life. Once it is determined that the person's situation qualifie ...
, sometimes done when a person is in severe pain or facing an imminent death, is legal in many countries and increasing in numbers. Views on suicide have been influenced by broad existential themes such as religion, honor, and the
meaning of life The meaning of life is the concept of an individual's life, or existence in general, having an intrinsic value (ethics), inherent significance or a Meaning (philosophy), philosophical point. There is no consensus on the specifics of such a conce ...
. The
Abrahamic religions The term Abrahamic religions is used to group together monotheistic religions revering the Biblical figure Abraham, namely Judaism, Christianity, and Islam. The religions share doctrinal, historical, and geographic overlap that contrasts them wit ...
traditionally consider suicide as an offense towards God due to belief in the
sanctity of life In religion and ethics, the sanctity of life, sometimes described as the inviolability of life, is a principle of implied protection regarding aspects of sentient life that are said to be holy, sacred, or otherwise of such value that they are not ...
. During the
samurai The samurai () were members of the warrior class in Japan. They were originally provincial warriors who came from wealthy landowning families who could afford to train their men to be mounted archers. In the 8th century AD, the imperial court d ...
era in Japan, a form of suicide known as
seppuku , also known as , is a form of Japanese ritualistic suicide by disembowelment. It was originally reserved for samurai in their code of honor, but was also practiced by other Japanese people during the Shōwa era (particularly officers near ...
(, ) was respected as a means of making up for failure or as a form of protest. Suicide and attempted suicide, while previously illegal, are no longer so in most Western countries. It remains a criminal offense in some countries. In the 20th and 21st centuries, suicide has been used on rare occasions as a form of protest; it has also been committed while or after murdering others, a tactic that has been used both militarily and by terrorists. Suicide is often seen as a major catastrophe, causing significant grief to the deceased's relatives, friends and community members, and it is viewed negatively almost everywhere around the world.


Definitions

Suicide, derived from Latin , is "the act of taking one's own life". Attempted suicide, or non-fatal suicidal behavior, amounts to
self-injury Self-harm refers to intentional behaviors that cause harm to oneself. This is most commonly regarded as direct injury of one's own skin tissues, usually without suicidal intention. Other terms such as cutting, self-abuse, self-injury, and s ...
with at least some desire to end one's life that does not result in death.
Assisted suicide Assisted suicide, sometimes restricted to the context of physician-assisted suicide (PAS), is the process by which a person, with the help of others, takes actions to end their life. Once it is determined that the person's situation qualifie ...
occurs when one individual helps another bring about their own death indirectly by providing either advice or the means to the end.
Euthanasia Euthanasia (from : + ) is the practice of intentionally ending life to eliminate pain and suffering. Different countries have different Legality of euthanasia, euthanasia laws. The British House of Lords Select committee (United Kingdom), se ...
, more specifically
voluntary euthanasia Voluntary euthanasia is the purposeful ending of another person's life at their request, in order to relieve them of suffering. Voluntary euthanasia and physician-assisted suicide (PAS) have been the focus of intense debate in the 21st century, ...
, is where another person takes a more active role in bringing about a person's death.
Suicidal ideation Suicidal ideation, or suicidal thoughts, is the thought process of having ideas or ruminations about the possibility of dying by suicide.World Health Organization, ''ICD-11 for Mortality and Morbidity Statistics'', ver. 09/2020MB26.A Suicidal i ...
is thoughts of ending one's life but not taking any active efforts to do so. It may or may not involve exact planning or intent. Suicidality is defined as "the risk of suicide, usually indicated by suicidal ideation or intent, especially as evident in the presence of a well-elaborated suicidal plan." In a
murder–suicide A murder–suicide is an act where an individual intentionally kills one or more people before killing themselves. The combination of murder and suicide can take various forms: * Suicide after or during murder inflicted on others ** Suicide af ...
(or homicide–suicide), the individual aims at taking the lives of others at the same time. A special case of this is extended suicide, where the murder is motivated by seeing the murdered persons as an extension of their self. Suicide in which the reason is that the person feels that they are not part of society is known as egoistic suicide. The Centre for Suicide Prevention in Canada found that the normal verb in scholarly research and journalism for the act of suicide was ''commit'', and argued for destigmatizing terminology related to suicide; in 2011, they published an article calling for changing the language used around suicide entitled "Suicide and language: Why we shouldn't use the 'C' word". The
American Psychological Association The American Psychological Association (APA) is the main professional organization of psychologists in the United States, and the largest psychological association in the world. It has over 170,000 members, including scientists, educators, clin ...
lists "committed suicide" as a term to avoid because it "
frame A frame is often a structural system that supports other components of a physical construction and/or steel frame that limits the construction's extent. Frame and FRAME may also refer to: Physical objects In building construction *Framing (con ...
suicide as a
crime In ordinary language, a crime is an unlawful act punishable by a State (polity), state or other authority. The term ''crime'' does not, in modern criminal law, have any simple and universally accepted definition,Farmer, Lindsay: "Crime, definiti ...
." Some advocacy groups recommend using the terms ''took his/her own life'', ''died by suicide'', or ''killed him/herself'' instead of ''committed suicide''. The
Associated Press Stylebook ''The Associated Press Stylebook'' (generally called the ''AP Stylebook''), alternatively titled ''The Associated Press Stylebook and Briefing on Media Law'', is a style and usage guide for American English grammar created by American journali ...
recommends avoiding "committed suicide" except in direct quotes from authorities. The ''
Guardian Guardian usually refers to: * Legal guardian, a person with the authority and duty to care for the interests of another * ''The Guardian'', a British daily newspaper (The) Guardian(s) may also refer to: Places * Guardian, West Virginia, Unit ...
'' and ''
Observer An observer is one who engages in observation or in watching an experiment. Observer may also refer to: Fiction * ''Observer'' (novel), a 2023 science fiction novel by Robert Lanza and Nancy Kress * ''Observer'' (video game), a cyberpunk horr ...
'' style guides
deprecate Deprecation is the discouragement of use of something human-made, such as a term, feature, design, or practice. Typically something is deprecated because it is claimed to be inferior compared to other options available. Something may be deprec ...
the use of "committed", as does
CNN Cable News Network (CNN) is a multinational news organization operating, most notably, a website and a TV channel headquartered in Atlanta. Founded in 1980 by American media proprietor Ted Turner and Reese Schonfeld as a 24-hour cable ne ...
. Opponents of ''commit'' argue that it implies that suicide is criminal,
sinful In religious context, sin is a transgression against divine law or a law of the deities. Each culture has its own interpretation of what it means to commit a sin. While sins are generally considered actions, any thought, word, or act considered ...
, or
morally Morality () is the categorization of intentions, decisions and actions into those that are ''proper'', or ''right'', and those that are ''improper'', or ''wrong''. Morality can be a body of standards or principles derived from a code of conduc ...
wrong.


Pathophysiology

There is no known unifying underlying
pathophysiology Pathophysiology (or physiopathology) is a branch of study, at the intersection of pathology and physiology, concerning disordered physiological processes that cause, result from, or are otherwise associated with a disease or injury. Pathology is ...
for suicide; it is believed to result from an interplay of behavioral, socio-economic and psychological factors. Low levels of
brain-derived neurotrophic factor Brain-derived neurotrophic factor (BDNF), or abrineurin, is a protein found in the and the periphery. that, in humans, is encoded by the ''BDNF'' gene. BDNF is a member of the neurotrophin family of growth factors, which are related to the can ...
(BDNF) are directly associated with suicide and indirectly associated through its role in major depression, post-traumatic stress disorder, schizophrenia and
obsessive–compulsive disorder Obsessive–compulsive disorder (OCD) is a mental disorder in which an individual has intrusive thoughts (an ''obsession'') and feels the need to perform certain routines (''Compulsive behavior, compulsions'') repeatedly to relieve the dis ...
.
Post-mortem 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 death ...
studies have found reduced levels of BDNF in the
hippocampus The hippocampus (: hippocampi; via Latin from Ancient Greek, Greek , 'seahorse'), also hippocampus proper, is a major component of the brain of humans and many other vertebrates. In the human brain the hippocampus, the dentate gyrus, and the ...
and
prefrontal cortex In mammalian brain anatomy, the prefrontal cortex (PFC) covers the front part of the frontal lobe of the cerebral cortex. It is the association cortex in the frontal lobe. The PFC contains the Brodmann areas BA8, BA9, BA10, BA11, BA12, ...
, in those with and without psychiatric conditions.
Serotonin Serotonin (), also known as 5-hydroxytryptamine (5-HT), is a monoamine neurotransmitter with a wide range of functions in both the central nervous system (CNS) and also peripheral tissues. It is involved in mood, cognition, reward, learning, ...
, a brain
neurotransmitter A neurotransmitter is a signaling molecule secreted by a neuron to affect another cell across a Chemical synapse, synapse. The cell receiving the signal, or target cell, may be another neuron, but could also be a gland or muscle cell. Neurotra ...
, is believed to be low in those who die by suicide. This is partly based on evidence of increased levels of
5-HT2A receptor The 5-HT2A receptor is a subtype of the 5-HT2 receptor, 5-HT2 receptor that belongs to the serotonin receptor family and functions as a GPCR, G protein-coupled receptor (GPCR). It is a cell surface receptor that activates multiple intracellular ...
s found after death. Other evidence includes reduced levels of a breakdown product of serotonin, 5-hydroxyindoleacetic acid, in the
cerebral spinal fluid Cerebrospinal fluid (CSF) is a clear, colorless transcellular body fluid found within the meningeal tissue that surrounds the vertebrate brain and spinal cord, and in the ventricles of the brain. CSF is mostly produced by specialized ependym ...
. However, direct evidence is hard to obtain.
Epigenetics In biology, epigenetics is the study of changes in gene expression that happen without changes to the DNA sequence. The Greek prefix ''epi-'' (ἐπι- "over, outside of, around") in ''epigenetics'' implies features that are "on top of" or "in ...
, the study of changes in genetic expression in response to
environmental factor An environmental factor, ecological factor or eco factor is any factor, abiotic or biotic, that influences living organisms. Abiotic factors include ambient temperature, amount of sunlight, air, soil, water and pH of the water soil in which an ...
s which do not alter the underlying
DNA Deoxyribonucleic acid (; DNA) is a polymer composed of two polynucleotide chains that coil around each other to form a double helix. The polymer carries genetic instructions for the development, functioning, growth and reproduction of al ...
, is also believed to play a role in determining suicide risk.


Risk factors

Factors that affect the risk of suicide include mental disorders, drug misuse,
psychological state A mental state, or a mental property, is a state of mind of a person. Mental states comprise a diverse class, including perception, pain/pleasure experience, belief, desire, intention, emotion, and memory. There is controversy concerning the exact ...
s, cultural, family and social situations, genetics, experiences of trauma or loss, and
nihilism Nihilism () encompasses various views that reject certain aspects of existence. There have been different nihilist positions, including the views that Existential nihilism, life is meaningless, that Moral nihilism, moral values are baseless, and ...
. Mental disorders and substance misuse frequently co-exist. Other risk factors include having previously attempted suicide, the ready availability of a means to take one's life, a family history of suicide, or the presence of
traumatic brain injury A traumatic brain injury (TBI), also known as an intracranial injury, is an injury to the brain caused by an external force. TBI can be classified based on severity ranging from mild traumatic brain injury (mTBI/concussion) to severe traumati ...
. For example, suicide rates have been found to be greater in households with firearms than those without them. Recent research examining 3,018 US counties found that "the distribution of suicide rates across US states corresponded to variations in ocial determinants of healthcluster distribution in each state.
Socio-economic Economics () is a behavioral science that studies the production, distribution, and consumption of goods and services. Economics focuses on the behaviour and interactions of economic agents and how economies work. Microeconomics analys ...
problems such as unemployment, poverty, homelessness, and
discrimination Discrimination is the process of making unfair or prejudicial distinctions between people based on the groups, classes, or other categories to which they belong or are perceived to belong, such as race, gender, age, class, religion, or sex ...
may trigger suicidal thoughts. Suicide might be rarer in societies with high
social cohesion Group cohesiveness, also called group cohesion, social harmony or social cohesion, is the degree or strength of bonds linking members of a social group to one another and to the group as a whole. Although cohesion is a multi-faceted process, it ...
and moral objections against suicide. Genetics appears to account for between 38% and 55% of suicidal behaviors. Suicides may also occur as a local
cluster may refer to: Science and technology Astronomy * Cluster (spacecraft), constellation of four European Space Agency spacecraft * Cluster II (spacecraft), a European Space Agency mission to study the magnetosphere * Asteroid cluster, a small ...
of cases. Most research does not distinguish between risk factors that lead to thinking about suicide and risk factors that lead to suicide attempts. Risks for suicide attempt, rather than just thoughts of suicide, include a high
pain tolerance Pain tolerance is the maximum level of pain that a person is able to tolerate. Pain tolerance is distinct from pain threshold (the point at which pain begins to be felt).fear of death Death anxiety is anxiety caused by thoughts of one's own death, and is also known as thanatophobia (fear of death). This anxiety can significantly impact various aspects of a person's life. Death anxiety is different from necrophobia, which r ...
.


Autism

Autistic individuals, on average, face more mental health and social challenges than non-autistic individuals, including higher rates of anxiety, depression, and social isolation. They attempt and consider suicide more frequently than the general population. Autistic people are about three times as likely as non-autistic people to attempt suicide. Suicide is a leading cause of early death for autistic people without co-occurring learning disabilities.


Environmental exposures

Some environmental exposures, including
air pollution Air pollution is the presence of substances in the Atmosphere of Earth, air that are harmful to humans, other living beings or the environment. Pollutants can be Gas, gases like Ground-level ozone, ozone or nitrogen oxides or small particles li ...
, intense sunlight, sunlight duration,
hot weather Weather is the state of the atmosphere, describing for example the degree to which it is hot or cold, wet or dry, calm or stormy, clear or cloudy. On Earth, most weather phenomena occur in the lowest layer of the planet's atmosphere, the ...
, and
high altitude Altitude is a distance measurement, usually in the vertical or "up" direction, between a reference datum and a point or object. The exact definition and reference datum varies according to the context (e.g., aviation, geometry, geographical s ...
, are associated with suicide. There is a possible association between short-term PM10 exposure and suicide. These factors might affect certain high-risk individuals more than others. The time of year may also affect suicide rates. There appears to be a decrease around Christmas, but an increase in rates during spring and summer, which might be related to exposure to sunshine. Another study found that the risk may be greater for males on their birthday. Genetics might influence rates of suicide. A family history of suicide, especially in the mother, affects children more than adolescents or adults. Adoption studies have shown that this is the case for biological relatives, but not adopted relatives. This makes familial risk factors unlikely to be due to
imitation Imitation (from Latin ''imitatio'', "a copying, imitation") is a behavior whereby an individual observes and replicates another's behavior. Imitation is also a form of learning that leads to the "development of traditions, and ultimately our cu ...
. Once mental disorders are accounted for, the estimated
heritability Heritability is a statistic used in the fields of Animal husbandry, breeding and genetics that estimates the degree of ''variation'' in a phenotypic trait in a population that is due to genetic variation between individuals in that population. T ...
rate is 36% for suicidal ideation and 17% for suicide attempts. An
evolutionary Evolution is the change in the heritable characteristics of biological populations over successive generations. It occurs when evolutionary processes such as natural selection and genetic drift act on genetic variation, resulting in certa ...
explanation for suicide is that it may improve
inclusive fitness Inclusive fitness is a conceptual framework in evolutionary biology first defined by W. D. Hamilton in 1964. It is primarily used to aid the understanding of how social traits are expected to evolve in structured populations. It involves partit ...
. This may occur if the person dying by suicide cannot have more children and takes resources away from relatives by staying alive. An objection to this explanation is that deaths by healthy adolescents likely do not increase inclusive fitness.
Adaptation In biology, adaptation has three related meanings. Firstly, it is the dynamic evolutionary process of natural selection that fits organisms to their environment, enhancing their evolutionary fitness. Secondly, it is a state reached by the p ...
to a very different ancestral environment may be maladaptive in the current one.


Media

The media, including the Internet, plays an important role. Certain depictions of suicide may increase its occurrence, with high-volume, prominent, repetitive coverage glorifying or romanticizing suicide having the most impact. For example, about 15–40% of people leave a
suicide note A suicide note or death note is a message written by a person who intends to die by suicide. A study examining Japanese suicide notes estimated that 25–30% of suicides are accompanied by a note. However, incidence rates may depend on ethnic ...
, and media are discouraged from reporting the contents of that message. When detailed descriptions of how to kill oneself by a specific means are portrayed, this method of suicide can be imitated in vulnerable people. This phenomenon has been observed in several cases after press coverage. In a bid to reduce the adverse effect of media portrayals concerning suicide report, one of the effective methods is to educate journalists on how to report suicide news in a manner that might reduce that possibility of imitation and encourage those at risk to seek for help. When journalists follow certain reporting guidelines the risk of suicides can be decreased. Getting buy-in from the media industry, however, can be difficult, especially in the long term. This trigger of suicide contagion or
copycat suicide A copycat suicide is defined as an emulation of another suicide that the person attempting suicide knows about either from local knowledge or due to accounts or depictions of the original suicide on television and in other media. The publicized ...
is known as the "Werther effect", named after the protagonist in
Goethe Johann Wolfgang (von) Goethe (28 August 1749 – 22 March 1832) was a German polymath who is widely regarded as the most influential writer in the German language. His work has had a wide-ranging influence on Western literature, literary, Polit ...
's ''
The Sorrows of Young Werther ''The Sorrows of Young Werther'' (; ), or simply ''Werther'', is a 1774 epistolary novel by Johann Wolfgang von Goethe, Johann Wolfgang Goethe, which appeared as a revised edition in 1787. It was one of the main novels in the ''Sturm und Drang'' ...
'' who killed himself and then was emulated by many admirers of the book. This risk is greater in adolescents who may romanticize death. It appears that while news media has a significant effect, that of the entertainment media is equivocal. It is unclear if searching for information about suicide on the Internet relates to the risk of suicide. The opposite of the Werther effect is the proposed "Papageno effect", in which coverage of effective coping mechanisms may have a protective effect. The term is based upon a character in
Mozart Wolfgang Amadeus Mozart (27 January 1756 – 5 December 1791) was a prolific and influential composer of the Classical period (music), Classical period. Despite his short life, his rapid pace of composition and proficiency from an early age ...
's opera ''
The Magic Flute ''The Magic Flute'' (, ), K. 620, is an opera in two acts by Wolfgang Amadeus Mozart to a German libretto by Emanuel Schikaneder. It is a ''Singspiel'', a popular form that included both singing and spoken dialogue. The work premiered on ...
''—fearing the loss of a loved one, he had planned to kill himself until his friends helped him out. As a consequence, fictional portrayals of suicide, showing alternative consequences or negative consequences, might have a preventive effect, for instance fiction might normalize mental health problems and encourage help-seeking.


Medical conditions

There is an association between suicidality and physical health problems such as chronic pain, traumatic brain injury, cancer,
chronic fatigue syndrome Myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) is a disabling Chronic condition, chronic illness. People with ME/CFS experience profound fatigue that does not go away with rest, as well as sleep issues and problems with memory ...
, kidney failure (requiring
hemodialysis Hemodialysis, American and British English spelling differences#ae and oe, also spelled haemodialysis, or simply ''"'dialysis'"'', is a process of filtering the blood of a person whose kidneys are not working normally. This type of Kidney dialys ...
),
HIV The human immunodeficiency viruses (HIV) are two species of '' Lentivirus'' (a subgroup of retrovirus) that infect humans. Over time, they cause acquired immunodeficiency syndrome (AIDS), a condition in which progressive failure of the im ...
, and
systemic lupus erythematosus Lupus, formally called systemic lupus erythematosus (SLE), is an autoimmune disease in which the body's immune system mistakenly attacks healthy tissue in many parts of the body. Symptoms vary among people and may be mild to severe. Common ...
. The diagnosis of
cancer Cancer is a group of diseases involving Cell growth#Disorders, abnormal cell growth with the potential to Invasion (cancer), invade or Metastasis, spread to other parts of the body. These contrast with benign tumors, which do not spread. Po ...
approximately doubles the subsequent frequency of suicide. The prevalence of increased suicidality persisted after adjusting for depressive illness and alcohol abuse. Among people with more than one medical condition the frequency was particularly high. In Japan, health problems are listed as the primary justification for suicide. Sleep disturbances, such as
insomnia Insomnia, also known as sleeplessness, is a sleep disorder where people have difficulty sleeping. They may have difficulty falling asleep, or staying asleep for as long as desired. Insomnia is typically followed by daytime sleepiness, low ene ...
and
sleep apnea Sleep apnea (sleep apnoea or sleep apnœa in British English) is a sleep-related breathing disorder in which repetitive Apnea, pauses in breathing, periods of shallow breathing, or collapse of the upper airway during sleep results in poor vent ...
, are risk factors for depression and suicide. In some instances, the sleep disturbances may be a risk factor independent of depression. A number of other medical conditions may present with symptoms similar to mood disorders, including
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 ...
,
Alzheimer's Alzheimer's disease (AD) is a neurodegenerative disease and the cause of 60–70% of cases of dementia. The most common early symptom is difficulty in remembering recent events. As the disease advances, symptoms can include problems wit ...
,
brain tumor A brain tumor (sometimes referred to as brain cancer) occurs when a group of cells within the Human brain, brain turn cancerous and grow out of control, creating a mass. There are two main types of tumors: malignant (cancerous) tumors and benign ...
s, systemic lupus erythematosus, and adverse effects from a number of medications (such as
beta blocker Beta blockers, also spelled β-blockers, are a class of medications that are predominantly used to manage abnormal heart rhythms ( arrhythmia), and to protect the heart from a second heart attack after a first heart attack ( secondary prevention ...
s and
steroids A steroid is an organic compound with four fused rings (designated A, B, C, and D) arranged in a specific molecular configuration. Steroids have two principal biological functions: as important components of cell membranes that alter mem ...
).


Mental illness

Mental illness is present at the time of suicide 27% to more than 90% of the time. Of those who have been hospitalized for suicidal behavior, the lifetime risk of suicide is 8.6%. Comparatively, non-suicidal people hospitalized for affective disorders have a 4% lifetime risk of suicide. Half of all people who die by suicide may have
major depressive disorder Major depressive disorder (MDD), also known as clinical depression, is a mental disorder characterized by at least two weeks of pervasive depression (mood), low mood, low self-esteem, and anhedonia, loss of interest or pleasure in normally ...
; having this or one of the other
mood disorder A mood disorder, also known as an affective disorder, is any of a group of conditions of mental and behavioral disorder where the main underlying characteristic is a disturbance in the person's mood. The classification is in the ''Diagnostic ...
s such as
bipolar disorder Bipolar disorder (BD), previously known as manic depression, is a mental disorder characterized by periods of Depression (mood), depression and periods of abnormally elevated Mood (psychology), mood that each last from days to weeks, and in ...
increases the risk of suicide 20-fold. Other conditions implicated include
schizophrenia Schizophrenia () is a mental disorder characterized variously by hallucinations (typically, Auditory hallucination#Schizophrenia, hearing voices), delusions, thought disorder, disorganized thinking and behavior, and Reduced affect display, f ...
(14%),
personality disorder Personality disorders (PD) are a class of mental health conditions characterized by enduring maladaptive patterns of behavior, cognition, and inner experience, exhibited across many contexts and deviating from those accepted by the culture. ...
s (8%),
obsessive–compulsive disorder Obsessive–compulsive disorder (OCD) is a mental disorder in which an individual has intrusive thoughts (an ''obsession'') and feels the need to perform certain routines (''Compulsive behavior, compulsions'') repeatedly to relieve the dis ...
, and
post-traumatic stress disorder Post-traumatic stress disorder (PTSD) is a mental disorder that develops from experiencing a Psychological trauma, traumatic event, such as sexual assault, domestic violence, child abuse, warfare and its associated traumas, natural disaster ...
. Others estimate that about half of people who die by suicide could be diagnosed with a personality disorder, with
borderline personality disorder Borderline personality disorder (BPD) is a personality disorder characterized by a pervasive, long-term pattern of significant interpersonal relationship instability, an acute fear of Abandonment (emotional), abandonment, and intense emotiona ...
being the most common. About 5% of people with
schizophrenia Schizophrenia () is a mental disorder characterized variously by hallucinations (typically, Auditory hallucination#Schizophrenia, hearing voices), delusions, thought disorder, disorganized thinking and behavior, and Reduced affect display, f ...
die of suicide.
Eating disorder An eating disorder is a mental disorder defined by abnormal eating behaviors that adversely affect a person's health, physical or mental health, mental health. These behaviors may include eating too much food or too little food. Types of eatin ...
s are another high risk condition. Around 22% to 50% of people with
gender dysphoria Gender dysphoria (GD) is the distress a person experiences due to inconsistency between their gender identitytheir personal sense of their own genderand their sex assigned at birth. The term replaced the previous diagnostic label of gender i ...
have attempted suicide, however this greatly varies by region. Among approximately 80% of suicides, the individual has seen a
physician A physician, medical practitioner (British English), medical doctor, or simply doctor is a health professional who practices medicine, which is concerned with promoting, maintaining or restoring health through the Medical education, study, Med ...
within the year before their death, including 45% within the prior month. Approximately 25–40% of those who died by suicide had contact with mental health services in the prior year.
Antidepressant Antidepressants are a class of medications used to treat major depressive disorder, anxiety disorders, chronic pain, and addiction. Common side effects of antidepressants include Xerostomia, dry mouth, weight gain, dizziness, headaches, akathi ...
s of the
SSRI Selective serotonin reuptake inhibitors (SSRIs) are a class of drugs that are typically used as antidepressants in the treatment of major depressive disorder, anxiety disorders, and other psychological conditions. SSRIs primarily work by ...
class appear to increase the frequency of suicide among children and young persons. An unwillingness to get help for mental health problems also increases the risk.


Occupational factors

Certain occupations carry an elevated risk of self-harm and suicide, such as military careers. Research in several countries has found that the rate of suicide among former armed forces personnel in particular, and young veterans especially, is markedly higher than that found in the general population. War veterans have a higher risk of suicide due in part to higher rates of mental illness, such as
post-traumatic stress disorder Post-traumatic stress disorder (PTSD) is a mental disorder that develops from experiencing a Psychological trauma, traumatic event, such as sexual assault, domestic violence, child abuse, warfare and its associated traumas, natural disaster ...
, and physical health problems related to war.


Previous attempts

A 2002 review of about 90 suicide related studies concluded that the risk of suicide following a previous attempt or self-harm is hundreds of times larger than in the general population. A more recent study estimated that individuals with a history of suicide attempts are approximately 25 times more likely to die by suicide compared to the general population. These findings makes a suicide attempt one of the strongest predictors of eventual suicide. Among the population that commit suicide, it is estimated that between 25% (up to a year prior) to 40% tried to commit suicide before. The likelihood of dying by suicide after the subsequent attempt depends on the means used, the age of the person and their gender. Other risk factors such as substance use and mental health impact likelihood of suicide after an attempt. High suicidal intent during previous attempts is another strong predictor. Time passing since an attempt also plays critical role. The first and the second year have the highest risk of suicide. It is estimated that 1% die by suicide within a year of the first attempt It is estimated that about 90% of suicide survivors will not die of suicide.


Psychosocial factors

A number of psychological factors increase the risk of suicide including: hopelessness, loss of pleasure in life, depression, anxiousness, agitation, rigid thinking, rumination,
thought suppression Thought suppression is a psychoanalytical defense mechanism. It is a type of motivated forgetting in which an individual consciously attempts to stop thinking about a particular thought. It is often associated with obsessive–compulsive disorde ...
, and poor
coping Coping refers to conscious or unconscious strategies used to reduce and manage unpleasant emotions. Coping strategies can be cognitions or behaviors and can be individual or social. To cope is to deal with struggles and difficulties in life. It ...
skills. A poor ability to solve problems, the loss of abilities one used to have, and poor impulse control also play a role. In older adults, the perception of being a burden to others is important. Those who have never married are also at greater risk. Recent life stresses, such as a loss of a family member or friend or the loss of a job, might be a contributing factor. Certain personality factors, especially high levels of
neuroticism Neuroticism is a personality trait associated with negative emotions. It is one of the Big Five traits. Individuals with high scores on neuroticism are more likely than average to experience such feelings as anxiety, worry, fear, anger, shame ...
and introvertedness, have been associated with suicide. This might lead to people who are isolated and sensitive to distress to be more likely to attempt suicide. On the other hand,
optimism Optimism is the Attitude (psychology), attitude or mindset of expecting events to lead to particularly positive, favorable, desirable, and hopeful outcomes. A common idiom used to illustrate optimism versus pessimism is Is the glass half empty ...
has been shown to have a protective effect. Other psychological risk factors include having few reasons for living and feeling trapped in a stressful situation. Changes to the stress response system in the brain might be altered during suicidal states. Specifically, changes in the
polyamine A polyamine is an organic compound having two or more amino groups. Alkyl polyamines occur naturally, but some are synthetic. Alkylpolyamines are colorless, hygroscopic, and water soluble. Near neutral pH, they exist as the ammonium derivatives. ...
system and
hypothalamic–pituitary–adrenal axis The hypothalamic–pituitary–adrenal axis (HPA axis or HTPA axis) is a complex set of direct influences and feedback interactions among three components: the hypothalamus (a part of the brain located below the thalamus), the pituitary gland ( ...
.
Social isolation Social isolation is a state of complete or near-complete lack of contact between an individual and society. It differs from loneliness, which reflects temporary and involuntary lack of contact with other humans in the world. Social isolation c ...
and the lack of
social support Social support is the perception and actuality that one is cared for, has assistance available from other people, and, most popularly, that one is part of a supportive social network. These supportive resources can be emotional (e.g., nurturance), ...
has been associated with an increased risk of suicide.
Poverty Poverty is a state or condition in which an individual lacks the financial resources and essentials for a basic standard of living. Poverty can have diverse Biophysical environmen ...
is also a factor, with heightened relative poverty compared to those around a person increasing suicide risk. Over 200,000 farmers in India have died by suicide since 1997, partly due to issues of debt. In China, suicide is three times as likely in rural regions as urban ones, partly, it is believed, due to financial difficulties in this area of the country. Being religious may reduce one's risk of suicide while beliefs that suicide is noble may increase it. This has been attributed to the negative stance many religions take against suicide and to the greater connectedness religion may give.
Muslim Muslims () are people who adhere to Islam, a Monotheism, monotheistic religion belonging to the Abrahamic religions, Abrahamic tradition. They consider the Quran, the foundational religious text of Islam, to be the verbatim word of the God ...
s, among religious people, appear to have a lower rate of suicide; however, the data supporting this is not strong. There does not appear to be a difference in rates of attempted suicide. Young women in 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 ...
may have higher rates.


Rational

Rational suicide is the reasoned taking of one's own life. However, some consider suicide as never being rational. Euthanasia and assisted suicide are accepted practices in a number of countries among those who have a poor quality of life without the possibility of getting better. They are supported by the legal arguments for a
right to die The right to die is a concept rooted in the belief that individuals have the Self-ownership, autonomy to make fundamental decisions about their own lives, including the choice to Suicide, end them or undergo voluntary euthanasia, central to the b ...
. The act of taking one's life for the benefit of others is known as
altruistic suicide Altruistic suicide is the sacrifice of one's life in order to save or benefit others, for the good of the group, or to preserve the traditions and honor of a society. It is always intentional. Benevolent suicide refers to the self-sacrifice of one ...
. An example of this is an elder ending his or her life to leave greater amounts of food for the younger people in the community. Suicide in some Inuit cultures has been seen as an act of respect, courage, or wisdom. A
suicide attack A suicide attack (also known by a wide variety of other names, see below) is a deliberate attack in which the perpetrators knowingly sacrifice their own lives as part of the attack. These attacks are a form of murder–suicide that is ofte ...
is a political or religious action where an attacker carries out violence against others which they understand will result in their own death. Some suicide bombers are motivated by a desire to obtain martyrdoms or are religiously motivated.
Kamikaze , officially , were a part of the Japanese Special Attack Units of military aviators who flew suicide attacks for the Empire of Japan against Allied naval vessels in the closing stages of the Pacific campaign of World War II, intending to d ...
missions in the latter stages of
World War II World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...
were carried out as a duty to a higher cause or
moral obligation An obligation is a course of action which someone is required to take, be it a legal obligation or a moral obligation. Obligations are constraints; they limit freedom. People who are under obligations may choose to freely act under obligations. ...
.
Murder–suicide A murder–suicide is an act where an individual intentionally kills one or more people before killing themselves. The combination of murder and suicide can take various forms: * Suicide after or during murder inflicted on others ** Suicide af ...
is an act of
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 ...
followed within a week by suicide of the person who carried out the act.
Mass suicide Mass suicide is a form of suicide, occurring when a group of people simultaneously kill themselves. Mass suicide sometimes occurs in religious settings. In war, defeated groups may resort to mass suicide rather than being captured. Suicide pacts ...
s are often performed under
social pressure Peer pressure is a direct or indirect influence on peers, i.e., members of social groups with similar interests and experiences, or social statuses. Members of a peer group are more likely to influence a person's beliefs, values, religion and beh ...
where members give up
autonomy In developmental psychology and moral, political, and bioethical philosophy, autonomy is the capacity to make an informed, uncoerced decision. Autonomous organizations or institutions are independent or self-governing. Autonomy can also be ...
to a leader (see Notable cases below). Mass suicides can take place with as few as two people, often referred to as a
suicide pact A suicide pact is an agreed plan between two or more individuals to die by suicide. The plan may be to die together, or separately and closely timed. In England and Wales, a suicide pact is a partial defense, under section 4 of the Homicide Act ...
. In extenuating situations where continuing to live would be intolerable, some people use suicide as a means of escape. Some inmates in
Nazi concentration camps From 1933 to 1945, Nazi Germany operated more than a thousand concentration camps (), including subcamp (SS), subcamps on its own territory and in parts of German-occupied Europe. The first camps were established in March 1933 immediately af ...
are known to have killed themselves during the
Holocaust The Holocaust (), known in Hebrew language, Hebrew as the (), was the genocide of History of the Jews in Europe, European Jews during World War II. From 1941 to 1945, Nazi Germany and Collaboration with Nazi Germany and Fascist Italy ...
by deliberately touching the electrified fences.


Self-harm

Non-suicidal self-harm is common with 18% of people engaging in self-harm over the course of their life. Acts of self-harm are not usually suicide attempts and most who self-harm are not at high risk of suicide. Some who self-harm, however, do still end their life by suicide, and risk for self-harm and suicide may overlap. Individuals who have been identified as self-harming after being admitted to hospital are more likely to die by suicide.


Substance misuse

Substance misuse is the second most common risk factor for suicide after major depression and bipolar disorder. Both chronic substance misuse as well as acute intoxication are associated. When combined with personal grief, such as bereavement, the risk is further increased. Substance misuse is also associated with mental health disorders. Most people are under the influence of sedative-hypnotic drugs (such as alcohol or benzodiazepines) when they die by suicide, with alcoholism present in between 15% and 61% of cases. Use of prescribed
benzodiazepine Benzodiazepines (BZD, BDZ, BZs), colloquially known as "benzos", are a class of central nervous system (CNS) depressant, depressant drugs whose core chemical structure is the fusion of a benzene ring and a diazepine ring. They are prescribed t ...
s is associated with an increased rate of suicide and attempted suicide. The pro-suicidal effects of benzodiazepines are suspected to be due to a psychiatric disturbance caused by side effects, such as
disinhibition Disinhibition, also referred to as behavioral disinhibition, is medically recognized as an orientation towards immediate gratification, leading to impulsive behaviour driven by current thoughts, feelings, and external stimuli, without regard for ...
, or withdrawal symptoms. Countries that have higher rates of alcohol use and a greater density of bars generally also have higher rates of suicide. About 2.2–3.4% of those who have been treated for alcoholism at some point in their life die by suicide. Alcoholics who attempt suicide are usually male, older, and have tried to take their own lives in the past. Between 3 and 35% of deaths among those who use
heroin Heroin, also known as diacetylmorphine and diamorphine among other names, is a morphinan opioid substance synthesized from the Opium, dried latex of the Papaver somniferum, opium poppy; it is mainly used as a recreational drug for its eupho ...
are due to suicide (approximately fourteenfold greater than those who do not use). In adolescents who misuse alcohol, neurological and psychological dysfunctions may contribute to the increased risk of suicide. The misuse of
cocaine Cocaine is a tropane alkaloid and central nervous system stimulant, derived primarily from the leaves of two South American coca plants, ''Erythroxylum coca'' and ''Erythroxylum novogranatense, E. novogranatense'', which are cultivated a ...
and
methamphetamine Methamphetamine (contracted from ) is a potent central nervous system (CNS) stimulant that is mainly used as a recreational drug use, recreational or Performance-enhancing substance, performance-enhancing drug and less commonly as a secon ...
has a high correlation with suicide. In those who use cocaine, the risk is greatest during the withdrawal phase. Those who used
inhalants Inhalants are a broad range of household and industrial chemicals whose volatile vapors or pressurized gases can be concentrated and breathed in via the nose or mouth to produce intoxication, in a manner not intended by the manufacturer. They ...
are also at significant risk with around 20% attempting suicide at some point and more than 65% considering it. Smoking cigarettes is associated with risk of suicide. There is little evidence as to why this association exists; however, it has been hypothesized that those who are predisposed to smoking are also predisposed to suicide, that smoking causes health problems which subsequently make people want to end their life, and that smoking affects brain chemistry causing a propensity for suicide.
Cannabis ''Cannabis'' () is a genus of flowering plants in the family Cannabaceae that is widely accepted as being indigenous to and originating from the continent of Asia. However, the number of species is disputed, with as many as three species be ...
, however, does not appear to independently increase the risk.


Other factors

Trauma is a risk factor for suicidality in both children and adults. Some may take their own lives to escape
bullying Bullying is the use of force, coercion, Suffering, hurtful teasing, comments, or threats, in order to abuse, aggression, aggressively wikt:domination, dominate, or intimidate one or more others. The behavior is often repeated and habitual. On ...
or
prejudice Prejudice can be an affect (psychology), affective feeling towards a person based on their perceived In-group and out-group, social group membership. The word is often used to refer to a preconceived (usually unfavourable) evaluation or classifi ...
. A history of childhood sexual abuse and time spent in
foster care Foster care is a system in which a minor has been placed into a ward, group home ( residential child care community or treatment centre), or private home of a state- certified caregiver, referred to as a "foster parent", or with a family mem ...
are also risk factors. Sexual abuse is believed to contribute to approximately 20% of the overall risk. Significant adversity early in life has a negative effect on problem-solving skills and memory, both of which are implicated in suicidality. According to a 2022 study, adverse childhood experiences maybe "associated with a two-fold higher odds" of anxiety disorders, depression and suicidality."
Problem gambling Problem gambling, ludopathy, or ludomania is repetitive gambling behavior despite harm and negative consequences. Problem gambling may be diagnosed as a mental disorder according to DSM-5 if certain diagnostic criteria are met. Pathological ...
is associated with increased suicidal ideation and attempts compared to the general population. Between 12 and 24% of pathological gamblers attempt suicide. The rate of suicide among their spouses is three times greater than that of the general population. Other factors that increase the risk in problem gamblers include concomitant mental illness, alcohol, and drug misuse. Infection by the parasite ''
Toxoplasma gondii ''Toxoplasma gondii'' () is a species of parasitic alveolate that causes toxoplasmosis. Found worldwide, ''T. gondii'' is capable of infecting virtually all warm-blooded animals, but members of the cat family (felidae) are the only known d ...
'', more commonly known as
toxoplasmosis Toxoplasmosis is a parasitic disease caused by ''Toxoplasma gondii'', an apicomplexan. Infections with toxoplasmosis are associated with a variety of neuropsychiatric and behavioral conditions. Occasionally, people may have a few weeks or month ...
, has been linked with suicide risk. One explanation states that this is caused by altered
neurotransmitter A neurotransmitter is a signaling molecule secreted by a neuron to affect another cell across a Chemical synapse, synapse. The cell receiving the signal, or target cell, may be another neuron, but could also be a gland or muscle cell. Neurotra ...
activity due to the immunological response.


Prevention

Suicide prevention is a term used for the collective efforts to reduce the incidence of suicide through preventive measures. Protective factors for suicide include support, and access to therapy. About 60% of people with suicidal thoughts do not seek help. Reasons for not doing so include low perceived need, and wanting to deal with the problem alone. Despite these high rates, there are few established treatments available for suicidal behavior. Reducing access to certain methods, such as access to firearms or toxins such as
opioids Opioids are a class of Drug, drugs that derive from, or mimic, natural substances found in the Papaver somniferum, opium poppy plant. Opioids work on opioid receptors in the brain and other organs to produce a variety of morphine-like effects, ...
and pesticides, can reduce risk of suicide by that method. Reducing access to easily-accessible methods of suicide may make impulsive attempts less likely to succeed. Other measures include reducing access to charcoal (for burning) and adding barriers on bridges and subway platforms. Treatment of drug and alcohol addiction, depression, and those who have attempted suicide in the past, may also be effective. Some have proposed reducing access to alcohol as a preventive strategy (such as reducing the number of bars). In young adults who have recently thought about suicide,
cognitive behavioral therapy Cognitive behavioral therapy (CBT) is a form of psychotherapy that aims to reduce symptoms of various mental health conditions, primarily depression, PTSD, and anxiety disorders. Cognitive behavioral therapy focuses on challenging and chang ...
appears to improve outcomes. School-based programs that increase mental health literacy and train staff have shown mixed results on suicide rates.
Economic development In economics, economic development (or economic and social development) is the process by which the economic well-being and quality of life of a nation, region, local community, or an individual are improved according to targeted goals and object ...
through its ability to reduce poverty may be able to decrease suicide rates. Efforts to increase
social connection Social connection is the experience of feeling close and connected to others. It involves feeling loved, cared for, and valued, and forms the basis of interpersonal relationships."Connection is the energy that exists between people when they feel ...
, especially in elderly males, may be effective. In people who have attempted suicide, following up on them might prevent repeat attempts. Although
crisis hotline A crisis hotline is a phone number people can call to get immediate emergency telephone counseling, usually by trained volunteers. The first such service was founded in England in 1951 and such hotlines have existed in most major cities of the E ...
s are common, there is little evidence to support or refute their effectiveness. Preventing childhood trauma provides an opportunity for suicide prevention. The World Suicide Prevention Day is observed annually on 10 September with the support of the International Association for Suicide Prevention and 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 ...
.


Diet

About 50% of people who die of suicide have a
mood disorder A mood disorder, also known as an affective disorder, is any of a group of conditions of mental and behavioral disorder where the main underlying characteristic is a disturbance in the person's mood. The classification is in the ''Diagnostic ...
such as major depression. Sleep and diet may play a role in depression (
major depressive disorder Major depressive disorder (MDD), also known as clinical depression, is a mental disorder characterized by at least two weeks of pervasive depression (mood), low mood, low self-esteem, and anhedonia, loss of interest or pleasure in normally ...
), and interventions in these areas may be an effective add-on to conventional methods. Vitamin B2, B6 and B12 deficiency may cause depression in females. Risk of depression may be reduced with a healthy diet "high in fruits, vegetables, nuts, and legumes; moderate amounts of poultry, eggs, and dairy products; and only occasional red meat". A balanced diet and the consumption of lots of water is essential for mental health. Consuming
oily fish Oily fish are fish species with fish oil, oil (fats) in soft tissues and in the coelomic cavity around the Gut (zoology), gut. Their fillet (cut), fillets may contain up to 30% oil, although this figure varies both within and between species. ...
may also help as they contain
omega-3 Omega−3 fatty acids, also called omega−3 oils, ω−3 fatty acids or ''n''−3 fatty acids, are polyunsaturated fatty acids (PUFAs) characterized by the presence of a double bond three atoms away from the terminal methyl group in their ...
fats. Consuming too much refined carbohydrates (e.g., snack foods) may increase the risk of depression symptoms. The mechanism on how diet improves or worsens mental health is still not fully understood. Blood glucose levels alterations,
inflammation Inflammation (from ) is part of the biological response of body tissues to harmful stimuli, such as pathogens, damaged cells, or irritants. The five cardinal signs are heat, pain, redness, swelling, and loss of function (Latin ''calor'', '' ...
, or effects on the
gut microbiome Gut microbiota, gut microbiome, or gut flora are the microorganisms, including bacteria, archaea, fungi, and viruses, that live in the digestive tracts of animals. The gastrointestinal metagenome is the aggregate of all the genomes of the g ...
have been suggested.


Screening

There is little data on the effects of screening the general population on the ultimate rate of suicide. Screening those who come to the emergency departments with injuries from self-harm have been shown to help identify suicide ideation and suicide intention.
Psychometric tests Psychometrics is a field of study within psychology concerned with the theory and technique of measurement. Psychometrics generally covers specialized fields within psychology and education devoted to testing, measurement, assessment, and rela ...
such as the
Beck Depression Inventory The Beck Depression Inventory (BDI, BDI-1A, BDI-II), created by Aaron T. Beck, is a 21-question multiple-choice self-report inventory, one of the most widely used psychometric tests for measuring the severity of depression. Its development mar ...
or the Geriatric Depression Scale for older people are being used. As there is a high rate of people who test positive via these tools that are not at risk of suicide, there are concerns that screening may significantly increase mental health care resource utilization. Assessing those at high risk, though, is recommended for. Asking about suicidality does not appear to increase the risk.


Treatment of mental illness

In those with mental health problems, a number of treatments may reduce the risk of suicide. Those who are actively suicidal may be admitted to psychiatric care either voluntarily or involuntarily. Possessions that may be used to harm oneself are typically removed. Some clinicians get patients to sign suicide prevention contracts where they agree to not harm themselves if released. However, evidence does not support a significant effect from this practice. If a person is at low risk, outpatient mental health treatment may be arranged. Short-term hospitalization has not been found to be more effective than community care for improving outcomes in those with borderline personality disorder who are chronically suicidal. There is tentative evidence that
psychotherapy Psychotherapy (also psychological therapy, talk therapy, or talking therapy) is the use of Psychology, psychological methods, particularly when based on regular Conversation, personal interaction, to help a person change behavior, increase hap ...
, specifically
dialectical behaviour therapy Dialectical behavior therapy (DBT) is an evidence-based psychotherapy that began with efforts to treat personality disorders and interpersonal conflicts. Evidence suggests that DBT can be useful in treating mood disorders and suicidal ideati ...
, reduces suicidality in adolescents as well as in those with borderline personality disorder. It may also be useful in decreasing suicide attempts in adults at high risk. There is controversy around the benefit-versus-harm of
antidepressant Antidepressants are a class of medications used to treat major depressive disorder, anxiety disorders, chronic pain, and addiction. Common side effects of antidepressants include Xerostomia, dry mouth, weight gain, dizziness, headaches, akathi ...
s. In young persons, some antidepressants, such as SSRIs, appear to increase the risk of suicidality from 25 per 1000 to 40 per 1000. In older persons, however, they may decrease the risk.
Lithium Lithium (from , , ) is a chemical element; it has chemical symbol, symbol Li and atomic number 3. It is a soft, silvery-white alkali metal. Under standard temperature and pressure, standard conditions, it is the least dense metal and the ...
appears effective at lowering the risk in those with bipolar disorder and major depression to nearly the same levels as that of the general population.
Clozapine Clozapine, sold under the brand name Clozaril among others, is a psychiatric medication and was the first atypical antipsychotic to be discovered. It is used primarily to treat people with schizophrenia and schizoaffective disorder who have ...
may decrease the thoughts of suicide in some people with schizophrenia.
Ketamine Ketamine is a cyclohexanone-derived general anesthetic and NMDA receptor antagonist with analgesic and hallucinogenic properties, used medically for anesthesia, depression, and pain management. Ketamine exists as its S- (esketamine) a ...
, which is a dissociative anaesthetic, seems to lower the rate of suicidal ideation. In the United States, health professionals are legally required to take reasonable steps to try to prevent suicide.


Caring letters

The "Caring Letters" model of suicide prevention involved mailing short letters that expressed the researchers' interest in the recipients without pressuring them to take any action. The intervention reduced deaths by suicide, as proven through a
randomized controlled trial A randomized controlled trial (or randomized control trial; RCT) is a form of scientific experiment used to control factors not under direct experimental control. Examples of RCTs are clinical trials that compare the effects of drugs, surgical ...
. The technique involves letters sent from a researcher who had spoken at length with the recipient during a suicidal crisis. The typewritten form letters were brief – sometimes as short as two sentences – personally signed by the researcher, and expressed interest in the recipient without making any demands. They were initially sent monthly, eventually decreasing in frequency to quarterly letters; if the recipient wrote back, then an additional personal letter was mailed. Caring letters are inexpensive and either the only, or one of very few, approaches to suicide prevention that has been scientifically proven to work during the first years after a suicide attempt that resulted in hospitalization.


Methods

The leading method of suicide varies among countries. The leading methods in different regions include
hanging Hanging is killing a person by suspending them from the neck with a noose or ligature strangulation, ligature. Hanging has been a standard method of capital punishment since the Middle Ages, and has been the primary execution method in numerou ...
,
pesticide poisoning A pesticide poisoning occurs when pesticides, chemicals intended to control a pest, affect non-target organisms such as humans, wildlife, plants, or bees. There are three types of pesticide poisoning. The first of the three is a single and sho ...
, and firearms. These differences are believed to be in part due to availability of the different methods. A review of 56 countries found that hanging was the most common method in most of the countries, accounting for 53% of male suicides and 39% of female suicides. Worldwide, 30% of suicides are estimated to occur from pesticide poisoning, most of which occur in the developing world. The use of this method varies markedly from 4% in Europe to more than 50% in the Pacific region. It is also common 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 ...
due to the ease of access within the farming populations. In many countries, drug overdoses account for approximately 60% of suicides among women and 30% among men. Many are unplanned and occur during an acute period of
ambivalence Ambivalence is a state of having simultaneous conflicting reactions, beliefs, or feelings towards some object. Stated another way, ambivalence is the experience of having an attitude towards someone or something that contains both positively and n ...
. The death rate varies by method: firearms 80–90%, drowning 65–80%, hanging 60–85%,
jumping Jumping or leaping is a form of locomotion or movement in which an organism or non-living (e.g., robotic) mechanical system propels itself through the air along a ballistic trajectory. Jumping can be distinguished from running, galloping and ...
35–60%,
charcoal burning Charcoal is a lightweight black carbon residue produced by strongly heating wood (or other animal and plant materials) in minimal oxygen to remove all water and volatile constituents. In the traditional version of this pyrolysis process, ca ...
40–50%, pesticides 60–75%, and medication overdose 1.5–4.0%. The most common attempted methods of suicide differ from the most common methods of completion; up to 85% of attempts are via drug overdose in the developed world. In China, the consumption of pesticides is the most common method. In Japan, self-disembowelment known as
seppuku , also known as , is a form of Japanese ritualistic suicide by disembowelment. It was originally reserved for samurai in their code of honor, but was also practiced by other Japanese people during the Shōwa era (particularly officers near ...
(''harakiri'') still occurs; however, hanging and jumping are the most common. Jumping to one's death is common in both Hong Kong and Singapore at 50% and 80% respectively. In Switzerland, firearms are the most frequent suicide method in young males, although this method has decreased since guns have become less common. In the United States, 50% of suicides involve the use of firearms, with this method being somewhat more common in men (56%) than women (31%). The next most common cause was hanging in males (28%) and self-poisoning in females (31%). Together, hanging and poisoning constituted about 42% of U.S. suicides ().


Epidemiology

Approximately 1.4% of people die by suicide, a mortality rate of 11.6 per 100,000 persons per year. Suicide resulted in 842,000 deaths in 2013 up from 712,000 deaths in 1990. Rates of suicide have increased by 60% from the 1960s to 2012, with these increases seen primarily in the developing world. Globally, /2009, suicide is the tenth leading cause of death. For every suicide that results in death there are between 10 and 40 attempted suicides. Suicide rates differ significantly between countries and over time. As a percentage of deaths in 2008 it was: Africa 0.5%, South-East Asia 1.9%, Americas 1.2% and Europe 1.4%. Rates per 100,000 were: Australia 8.6, Canada 11.1, China 12.7, India 23.2, United Kingdom 7.6, United States 11.4 and South Korea 28.9. It was ranked as the 10th leading cause of death in the United States in 2016 with about 45,000 cases that year. Rates have increased in the United States in the last few years, with about 49,500 people dying by suicide in 2022, the highest number ever recorded. In the United States, about 650,000 people are seen in emergency departments yearly due to attempting suicide. The United States rate among men in their 50s rose by nearly half in the decade 1999–2010. Greenland, Lithuania, Japan, and Hungary have the highest rates of suicide. Around 75% of suicides occur in the developing world. The countries with the greatest absolute numbers of suicides are China and India, partly due to their large population size, accounting for over half the total. In China, suicide is the 5th leading cause of death. File:Death rate from suicides (IHME (1990 to 2016)), OWID.svg, Death rate from suicide per 100,000 as of 2017 File:Share of deaths from suicide, OWID.svg, Share of deaths from suicide, 2017 An unofficial report estimated 5,000 suicides in Iran in 2022.


Sex and gender

Globally , death by suicide occurs about 1.8 times more often in males than females. In the
Western world The Western world, also known as the West, primarily refers to various nations and state (polity), states in Western Europe, Northern America, and Australasia; with some debate as to whether those in Eastern Europe and Latin America also const ...
, males die three to four times more often by means of suicide than do females. This difference is even more pronounced in those over the age of 65, with tenfold more males than females dying by suicide. Suicide attempts and self-harm are between two and four times more frequent among females. Researchers have attributed the difference between suicide and attempted suicide among the sexes to males using more lethal means to end their lives. However, separating intentional suicide attempts from non-suicidal self-harm is not currently done in places like the United States when gathering statistics at the national level. China has one of the highest female suicide rates in the world and is the only country where it is higher than that of men (ratio of 0.9). In the
Eastern Mediterranean The Eastern Mediterranean is a loosely delimited region comprising the easternmost portion of the Mediterranean Sea, and well as the adjoining land—often defined as the countries around the Levantine Sea. It includes the southern half of Turkey ...
, suicide rates are nearly equivalent between males and females. The highest rate of female suicide is found in South Korea at 22 per 100,000, with high rates in
South-East Asia Southeast Asia is the geographical southeastern region of Asia, consisting of the regions that are situated south of China, east of the Indian subcontinent, and northwest of the Australian mainland, which is part of Oceania. Southeast Asia i ...
and the Western Pacific generally. A number of reviews have found an increased risk of suicide among
lesbian A lesbian is a homosexual woman or girl. The word is also used for women in relation to their sexual identity or sexual behavior, regardless of sexual orientation, or as an adjective to characterize or associate nouns with female homosexu ...
,
gay ''Gay'' is a term that primarily refers to a homosexual person or the trait of being homosexual. The term originally meant 'carefree', 'cheerful', or 'bright and showy'. While scant usage referring to male homosexuality dates to the late ...
,
bisexual Bisexuality is romantic attraction, sexual attraction, or sexual behavior toward both males and females. It may also be defined as the attraction to more than one gender, to people of both the same and different gender, or the attraction t ...
, and
transgender A transgender (often shortened to trans) person has a gender identity different from that typically associated with the sex they were sex assignment, assigned at birth. The opposite of ''transgender'' is ''cisgender'', which describes perso ...
people. Among transgender persons, rates of attempted suicide are about 40% compared to a general population rate of 5%. This is believed to in part be due to social stigmatisation.


Age

In many countries, the rate of suicide is highest in the middle-aged or elderly. The absolute number of suicides, however, is greatest in those between 15 and 29 years old, due to the number of people in this age group. Worldwide, the average age of suicide is between age 30 and 49 for both men and women. Suicidality is rare in children, but increases during the transition to adolescence. In the United States, the suicide death rate is greatest in Caucasian men older than 80 years, even though younger people more frequently attempt suicide. It is the second most common cause of death in adolescents and in young males is second only to accidental death. In young males in the developed world, it is the cause of nearly 30% of mortality. In the developing world rates are similar, but it makes up a smaller proportion of overall deaths due to higher rates of death from other types of trauma. In South-East Asia, in contrast to other areas of the world, deaths from suicide occur at a greater rate in young females than elderly females.


History

In
ancient Athens Athens is one of the List of oldest continuously inhabited cities, oldest named cities in the world, having been continuously inhabited for perhaps 5,000 years. Situated in southern Europe, Athens became the leading city of ancient Greece in t ...
, a person who died by suicide without the approval of the state was denied the honors of a normal burial. The person would be buried alone, on the outskirts of the city, without a headstone or marker. It was also common for the hand to be cut off the body and buried separately - the hand (and the instrument used) being considered the perpetrator. However, it was deemed to be an acceptable method to deal with military defeat. In
Ancient Rome In modern historiography, ancient Rome is the Roman people, Roman civilisation from the founding of Rome, founding of the Italian city of Rome in the 8th century BC to the Fall of the Western Roman Empire, collapse of the Western Roman Em ...
, while suicide was initially permitted, it was later deemed a crime against the state due to its economic costs.
Aristotle Aristotle (; 384–322 BC) was an Ancient Greek philosophy, Ancient Greek philosopher and polymath. His writings cover a broad range of subjects spanning the natural sciences, philosophy, linguistics, economics, politics, psychology, a ...
condemned all forms of suicide while
Plato Plato ( ; Greek language, Greek: , ; born  BC, died 348/347 BC) was an ancient Greek philosopher of the Classical Greece, Classical period who is considered a foundational thinker in Western philosophy and an innovator of the writte ...
was ambivalent. In Rome, some reasons for suicide included volunteering death in a
gladiator A gladiator ( , ) was an armed combatant who entertained audiences in the Roman Republic and Roman Empire in violent confrontations with other gladiators, wild animals, and condemned criminals. Some gladiators were volunteers who risked their ...
combat, guilt over murdering someone, to save the life of another, as a result of mourning, from shame from being raped, and as an escape from intolerable situations like physical suffering, military defeat, or criminal pursuit. Suicide came to be regarded as a
sin In religious context, sin is a transgression against divine law or a law of the deities. Each culture has its own interpretation of what it means to commit a sin. While sins are generally considered actions, any thought, word, or act considered ...
in
Christian Europe The terms Christendom or Christian world commonly refer to the global Christian community, Christian states, Christian-majority countries or countries in which Christianity is dominant or prevails.SeMerriam-Webster.com : dictionary, "Christen ...
and was condemned at the Council of Arles (452) as the work of the
Devil A devil is the mythical personification of evil as it is conceived in various cultures and religious traditions. It is seen as the objectification of a hostile and destructive force. Jeffrey Burton Russell states that the different conce ...
. In the
Middle Ages In the history of Europe, the Middle Ages or medieval period lasted approximately from the 5th to the late 15th centuries, similarly to the post-classical period of global history. It began with the fall of the Western Roman Empire and ...
, the Church had drawn-out discussions as to when the desire for
martyrdom A martyr (, ''mártys'', 'witness' stem , ''martyr-'') is someone who suffers persecution and death for advocating, renouncing, or refusing to renounce or advocate, a religious belief or other cause as demanded by an external party. In colloqui ...
was suicidal, as in the case of
martyrs of Córdoba The Martyrs of Córdoba were forty-eight Martyrdom in Christianity, Christian martyrs who were executed under the rule of Muslim administration in Al-Andalus (name of the Iberian Peninsula under the Islamic rule). The Hagiography, hagiographical ...
. Despite these disputes and occasional official rulings, Catholic doctrine was not entirely settled on the subject of suicide until the later 17th century. A criminal ordinance issued by
Louis XIV of France LouisXIV (Louis-Dieudonné; 5 September 16381 September 1715), also known as Louis the Great () or the Sun King (), was King of France from 1643 until his death in 1715. His verified reign of 72 years and 110 days is the List of longest-reign ...
in 1670 was extremely severe, even for the times: the dead person's body was drawn through the streets, face down, and then hung or thrown on a garbage heap. Additionally, all of the person's property was confiscated. Attitudes towards suicide slowly began to shift during the
Renaissance The Renaissance ( , ) is a Periodization, period of history and a European cultural movement covering the 15th and 16th centuries. It marked the transition from the Middle Ages to modernity and was characterized by an effort to revive and sur ...
.
John Donne John Donne ( ; 1571 or 1572 – 31 March 1631) was an English poet, scholar, soldier and secretary born into a recusant family, who later became a clergy, cleric in the Church of England. Under Royal Patronage, he was made Dean of St Paul's, D ...
's work '' Biathanatos'' contained one of the first modern defences of suicide, bringing proof from the conduct of Biblical figures, such as
Jesus Jesus (AD 30 or 33), also referred to as Jesus Christ, Jesus of Nazareth, and many Names and titles of Jesus in the New Testament, other names and titles, was a 1st-century Jewish preacher and religious leader. He is the Jesus in Chris ...
,
Samson SAMSON (Software for Adaptive Modeling and Simulation Of Nanosystems) is a computer software platform for molecular design being developed bOneAngstromand previously by the NANO-D group at the French Institute for Research in Computer Science an ...
and
Saul Saul (; , ; , ; ) was a monarch of ancient Israel and Judah and, according to the Hebrew Bible and Old Testament, the first king of the United Monarchy, a polity of uncertain historicity. His reign, traditionally placed in the late eleventh c ...
, and presenting arguments on grounds of reason and nature to sanction suicide in certain circumstances. The
secularization In sociology, secularization () is a multilayered concept that generally denotes "a transition from a religious to a more worldly level." There are many types of secularization and most do not lead to atheism or irreligion, nor are they automatica ...
of society that began during the
Enlightenment Enlightenment or enlighten may refer to: Age of Enlightenment * Age of Enlightenment, period in Western intellectual history from the late 17th to late 18th century, centered in France but also encompassing (alphabetically by country or culture): ...
questioned traditional religious attitudes (such as
Christian views on suicide Early Christians believed that suicide is sinful and an act of blasphemy. Modern Christians do not consider suicide an unforgivable sin (though still wrong and sinful) or something that prevents a believer who died by suicide from achieving etern ...
) toward suicide and brought a more modern perspective to the issue.
David Hume David Hume (; born David Home; – 25 August 1776) was a Scottish philosopher, historian, economist, and essayist who was best known for his highly influential system of empiricism, philosophical scepticism and metaphysical naturalism. Beg ...
denied that suicide was a crime as it affected no one and was potentially to the advantage of the individual. In his 1777 ''Essays on Suicide and the Immortality of the Soul'' he rhetorically asked, "Why should I prolong a miserable existence, because of some frivolous advantage which the public may perhaps receive from me?" Hume's analysis was criticized by philosopher Philip Reed as being "uncharacteristically (for him) bad", since Hume took an unusually narrow conception of duty and his conclusion depended upon the suicide producing no harm to others – including causing no grief, feelings of guilt, or emotional pain to any surviving friends and family – which is almost never the case. A shift in public opinion at large can also be discerned; ''
The Times ''The Times'' is a British Newspaper#Daily, daily Newspaper#National, national newspaper based in London. It began in 1785 under the title ''The Daily Universal Register'', adopting its modern name on 1 January 1788. ''The Times'' and its si ...
'' in 1786 initiated a spirited debate on the motion "Is suicide an act of courage?". By the 19th century, the act of suicide had shifted from being viewed as caused by sin to being caused by
insanity Insanity, madness, lunacy, and craziness are behaviors caused by certain abnormal mental or behavioral patterns. Insanity can manifest as violations of societal norms, including a person or persons becoming a danger to themselves or to other ...
in Europe. Although suicide remained illegal during this period, it increasingly became the target of satirical comments, such as the
Gilbert and Sullivan Gilbert and Sullivan refers to the Victorian-era theatrical partnership of the dramatist W. S. Gilbert (1836–1911) and the composer Arthur Sullivan (1842–1900) and to the works they jointly created. The two men collaborated on fourteen com ...
comic opera Comic opera, sometimes known as light opera, is a sung dramatic work of a light or comic nature, usually with a happy ending and often including spoken dialogue. Forms of comic opera first developed in late 17th-century Italy. By the 1730s, a ne ...
''
The Mikado ''The Mikado; or, The Town of Titipu'' is a comic opera in two acts, with music by Arthur Sullivan and libretto by W. S. Gilbert, their ninth of fourteen Gilbert and Sullivan, operatic collaborations. It opened on 14 March 1885, in London, whe ...
'', which satirized the idea of executing someone who had already killed himself. By 1879, English law began to distinguish between suicide and homicide, although suicide still resulted in forfeiture of estate. In 1882, the deceased were permitted daylight burial in England and by the middle of the 20th century, suicide had become legal in much of the Western world. The term ''suicide'' first emerged shortly before 1700 to replace expressions on self-death which were often characterized as a form of self-murder in the West.


Social and culture


Legislation

Suicide is a crime in some parts of the world. No country in Europe currently considers suicide or attempted suicide to be a crime. However, it was in most Western European countries from the Middle Ages until at least the 19th century. The Netherlands was the first country to legalize both physician-assisted suicide and euthanasia, which took effect in 2002, although only doctors are allowed to assist in either of them, and have to follow a protocol prescribed by Dutch law. If such protocol is not followed, it is an offence punishable by law. In Germany, active euthanasia is illegal and anyone present during suicide may be prosecuted for failure to render aid in an emergency. Switzerland has taken steps to legalize assisted suicide for the chronically mentally ill. The high court in
Lausanne Lausanne ( , ; ; ) is the capital and largest List of towns in Switzerland, city of the Swiss French-speaking Cantons of Switzerland, canton of Vaud, in Switzerland. It is a hilly city situated on the shores of Lake Geneva, about halfway bet ...
, Switzerland, in a 2006 ruling, granted an anonymous individual with longstanding psychiatric difficulties the right to end his own life. England and Wales decriminalized suicide via the
Suicide Act 1961 The Suicide Act 1961 ( 9 & 10 Eliz. 2. c. 60) is an Act of the Parliament of the United Kingdom. It decriminalised the act of suicide in England and Wales so that those who survived a suicide attempt would no longer be prosecuted. The text of ...
and the Republic of Ireland in 1993. The word "commit" was used in reference to its being illegal, but many organisations have stopped it because of the negative connotation. In the United States, suicide is not illegal, but may be associated with penalties for those who attempt it. Physician-assisted suicide is legal in the state of
Washington Washington most commonly refers to: * George Washington (1732–1799), the first president of the United States * Washington (state), a state in the Pacific Northwest of the United States * Washington, D.C., the capital of the United States ** A ...
for people with terminal diseases. In
Oregon Oregon ( , ) is a U.S. state, state in the Pacific Northwest region of the United States. It is a part of the Western U.S., with the Columbia River delineating much of Oregon's northern boundary with Washington (state), Washington, while t ...
, people with terminal diseases may request medications to help end their lives. Canadians who have attempted suicide may be barred from entering the United States. U.S. laws allow border guards to deny access to people who have a mental illness, including those with previous suicide attempts. In Australia, suicide is not a crime, however it is a crime to counsel, incite, or aid and abet another in attempting to die by suicide, and the law explicitly allows any person to use "such force as may reasonably be necessary" to prevent another from taking their own life. The
Northern Territory The Northern Territory (abbreviated as NT; known formally as the Northern Territory of Australia and informally as the Territory) is an states and territories of Australia, Australian internal territory in the central and central-northern regi ...
of Australia briefly had legal physician-assisted suicide from 1996 to 1997. In India, suicide was illegal until 2014, and surviving family members used to face legal difficulties. It remains a criminal offense in most Muslim-majority nations. In
Malaysia Malaysia is a country in Southeast Asia. Featuring the Tanjung Piai, southernmost point of continental Eurasia, it is a federation, federal constitutional monarchy consisting of States and federal territories of Malaysia, 13 states and thre ...
, suicide ''per se'' is not a crime; however, attempted suicide is. Under Section 309 of the Penal Code, a person convicted of attempting suicide can be punished with imprisonment of up to one year, fined, or both. There are ongoing efforts to decriminalise attempted suicide, although rights groups and non-governmental organisations such as the local chapter of Befrienders say that progress has been slow. Proponents of decriminalisation argue that suicide legislation may deter people from seeking help, and may even strengthen the resolve of would-be suicides to end their lives to avoid prosecution. The first reading of a bill to repeal Section 309 of the Penal Code was tabled in Parliament in April 2023, bringing Malaysia one step closer towards decriminalising attempted suicide. Suicide became a trending crisis in North Korea in 2023; a secret order criminalized suicide as treason against the socialist state.


Religious views


Christianity

Most forms of Christianity consider suicide sinful, based mainly on the writings of influential Christian thinkers of the Middle Ages, such as St. Augustine and St. Thomas Aquinas, but suicide was not considered a sin under the Byzantine Christian code of Justinian, for instance. In Catholicism, Catholic and Orthodox doctrine, suicide is considered to be murder, violating the Ten Commandments, commandment "Thou shalt not kill," and historically neither church would even hold a burial service for a member that died by suicide, deeming it an act that condemned the person to hell, since they died in a state of mortal sin. The basic idea being that life is a gift given by God which should not be spurned, and that suicide is against the "natural order" and thus interferes with God's master plan for the world. However, according to the Catechism of the Catholic Church, it is believed that mental illness or grave fear of suffering diminishes the responsibility of the one committing suicide.


Judaism

Judaism focuses on the importance of valuing this life, and as such, suicide is tantamount to denying God's goodness in the world. Despite this, under extreme circumstances when there has seemed no choice but to either be killed or forced to betray their religion, there are several accounts of Jews having died by suicide, either individually or in groups (see
Holocaust The Holocaust (), known in Hebrew language, Hebrew as the (), was the genocide of History of the Jews in Europe, European Jews during World War II. From 1941 to 1945, Nazi Germany and Collaboration with Nazi Germany and Fascist Italy ...
, Masada, History of the Jews in France#Persecutions (987–1137), First French persecution of the Jews and York Castle for examples), and as a grim reminder there is even a prayer in the Jewish liturgy for "when the knife is at the throat", for those dying "to sanctify God's Name" (see Martyrdom). These acts have received mixed responses by Jewish authorities, regarded by some as examples of heroic martyrdom, while others state that it was wrong for them to take their own lives in anticipation of martyrdom.


Islam

Islamic religious views condemn suicide and consider it haram. Hadith , Hadith manuscripts state that suicide is unlawful and a sin, and the Quran explicitly forbids it. In Islamic countries, suicide is often stigmatized; it is believed that those that successfully die by suicide are forbidden from entering Jannah.


Hinduism

In Hinduism, suicide is generally disdained and is considered equally sinful as murdering another in contemporary Hindu society. Hindu texts, Hindu Scriptures state that one who dies by suicide will become part of the spirit world, wandering earth until the time one would have otherwise died, had one not taken one's own life. However, Hinduism accepts a man's right to end one's life through the non-violent practice of fasting to death, termed ''Prayopavesa''; but ''Prayopavesa'' is strictly restricted to people who have no desire or ambition left, and no responsibilities remaining in this life.


Jainism

Jainism has a similar practice named ''Santhara''. sati (practice), Sati, or self-immolation by widows, is a rare and illegal practice in Hindu society.


Ainu

Within the Ainu religion, someone who dies by suicide is believed to become a ghost (tukap) who would haunt the living,Takako Yamada: ''The Worldview of the Ainu. Nature and Cosmos Reading from Language'', p. 25–37, p. 123. to come to fulfillment from which they were excluded during life.Norbert Richard Adami: ''Religion und Schaminismus der Ainu auf Sachalin (Karafuto)'', Bonn 1989, p. 45. Also, someone who insults another so they kill themselves is regarded as co-responsible for their death.Adami: ''Religion und Schaminismus der Ainu auf Sachalin (Karafuto)'', p. 79, p. 119. According to Norbert Richard Adami, this ethic exists due to the case that solidarity within the community is much more important to Ainu culture than it is to the
Western world The Western world, also known as the West, primarily refers to various nations and state (polity), states in Western Europe, Northern America, and Australasia; with some debate as to whether those in Eastern Europe and Latin America also const ...
.


Philosophy

A number of questions are raised within the philosophy of suicide, including what constitutes suicide, whether or not suicide can be a rational choice, and the moral permissibility of suicide. Arguments as to acceptability of suicide in moral or social terms range from the position that the act is inherently immoral and unacceptable under any circumstances, to a regard for suicide as a sacrosanct right of anyone who believes they have rationally and conscientiously come to the decision to end their own lives, even if they are young and healthy. Opponents to suicide include philosophers such as Augustine of Hippo, Thomas Aquinas, Immanuel Kant and, arguably, John Stuart Mill – Mill's focus on the importance of liberty and autonomy meant that he rejected choices which would prevent a person from making future autonomous decisions. Others view suicide as a legitimate matter of personal choice. Supporters of this position maintain that no one should be forced to suffer against their will, particularly from conditions such as incurable disease, mental illness, and old age, with no possibility of improvement. They reject the belief that suicide is always irrational, arguing instead that it can be a valid last resort for those enduring major pain or trauma. A stronger stance would argue that people should be allowed to autonomously choose to die regardless of whether they are suffering. Notable supporters of this school of thought include Scottish empiricist
David Hume David Hume (; born David Home; – 25 August 1776) was a Scottish philosopher, historian, economist, and essayist who was best known for his highly influential system of empiricism, philosophical scepticism and metaphysical naturalism. Beg ...
, who accepted suicide so long as it did not harm or violate a duty to God, other people, or the self, and American bioethicist Jacob M. Appel, Jacob Appel.


Adverse attitudes

Society may have negative attitudes towards suicide, which can lead to suicidal people experiencing discrimination, stigmatization, exclusion, pathologization, and incarceration. They may be hospitalized or drugged without their consent, have difficulties in finding jobs or housing, and have their parental rights revoked. Suicide is not seen as a positive human right or a logical decision given circumstances. Suicidal people are not seen as having potentially valuable messages to convey.


Advocacy

Advocacy of suicide has occurred in many cultures and subcultures. The Japanese military during World War II encouraged and glorified kamikaze attacks, which were suicide attacks by military aviators from the Empire of Japan against Allies of World War II, Allied naval vessels in the closing stages of the Pacific Theater (World War II), Pacific Theater of World War II. Japanese society as a whole has been described as "suicide-tolerant" (see Suicide in Japan). Suicide and the Internet, Internet searches for information on suicide return webpages that, in a 2008 study, about 50% of the time provide information on suicide methods. A similar study found that 11% of sites encouraged suicide attempts. There is some concern that such sites may push those already predisposed to attempt suicide. Some people form suicide pacts online, either with pre-existing friends or people they have recently encountered in chat rooms or Internet forum, message boards. The Internet, however, may also help prevent suicide by providing a social group for those who are isolated.


Locations

Some landmarks have become known for high levels of suicide attempts. These include China's Nanjing Yangtze River Bridge, San Francisco's Golden Gate Bridge, Japan's Aokigahara, Aokigahara Forest, England's Beachy Head, and Toronto's Bloor Street Viaduct. , the Golden Gate Bridge has had more than 1,300 suicides by jumping since its construction in 1937. Many locations where suicide is common have constructed barriers to prevent it; this includes the Luminous Veil in Toronto, the Eiffel Tower in Paris, the West Gate Bridge in Melbourne, and Empire State Building in New York City. They generally appear to be effective.


Notable cases

An example of mass suicide is the 1978 Jonestown mass murder/suicide in which 909 members of the Peoples Temple, an American new religious movement led by Jim Jones, ended their lives by drinking grape Flavor Aid laced with Potassium cyanide, cyanide and various prescription drugs. Thousands of Japanese civilians took their own lives in the last days of the Battle of Saipan in 1944, some jumping from "Suicide Cliff" and "Banzai Cliff". The 1981 Irish hunger strikes, led by Bobby Sands, resulted in 10 deaths. The cause of death was recorded by the coroner as "starvation, self-imposed" rather than suicide; this was modified to simply "starvation" on the death certificates after protest from the dead strikers' families. During World War II, Erwin Rommel was found to have foreknowledge of the 20 July plot on Hitler's life; he was threatened with public trial, execution, and reprisals on his family unless he killed himself.


Other species

As suicide requires a wilful attempt to die, some feel it therefore cannot be said to occur in non-human animals. Suicidal behavior has been observed in ''Salmonella'' seeking to overcome competing bacteria by triggering an immune system response against them. Suicidal defenses by workers are also seen in the Brazilian ant ''Forelius pusillus'', where a small group of ants leaves the security of the nest after sealing the entrance from the outside each evening. Pea aphids, when threatened by a ladybug, can explode themselves, scattering and protecting their brethren and sometimes even killing the ladybug; this form of suicidal Altruism (biology), altruism is known as autothysis. Some species of termites (for example ''Globitermes sulphureus'') have soldiers that explode, covering their enemies with sticky goo. There have been anecdotal reports of dogs, horses, and dolphins killing themselves, but little scientific study has been done regarding animal suicide. Animal suicide is usually put down to romantic human interpretation and is not generally thought to be intentional. Some of the reasons animals are thought to unintentionally kill themselves include: psychological stress, infection by certain parasites or fungi, or disruption of a long-held social tie, such as the ending of a long association with an owner and thus not accepting food from another individual.


See also

* List of suicide crisis lines * List of countries by suicide rate * Prisoner suicide * Substance-induced psychosis * Youth suicide


References


Further reading

* *


External links

* * Freakonomics podcast
The Suicide Paradox
{{Authority control Suicide, Causes of death Medical emergencies Wikipedia medicine articles ready to translate (full) Wikipedia neurology articles ready to translate