A suicide method is any means by which a person chooses to
end their life.
Suicide attempts
A suicide attempt is an attempt to die by suicide that results in survival. It may be referred to as a "failed" or "unsuccessful" suicide attempt, though these terms are discouraged by mental health professionals for implying that a suicide resu ...
do not always result in death, and a nonfatal suicide attempt can leave the person with serious physical injuries, long-term health problems, and
brain damage
Neurotrauma, brain damage or brain injury (BI) is the destruction or degeneration of brain cells. Brain injuries occur due to a wide range of internal and external factors. In general, brain damage refers to significant, undiscriminating t ...
.
Worldwide, three suicide methods predominate with the pattern varying in different countries. These are
hanging
Hanging is the suspension of a person by a noose or ligature around the neck.Oxford English Dictionary, 2nd ed. Hanging as method of execution is unknown, as method of suicide from 1325. The ''Oxford English Dictionary'' states that hanging i ...
,
poisoning by pesticides, and
firearm
A firearm is any type of gun designed to be readily carried and used by an individual. The term is legally defined further in different countries (see Legal definitions).
The first firearms originated in 10th-century China, when bamboo tubes ...
s.
Some suicides are impulse decisions that may be preventable by removing the means.
Making common suicide methods less accessible leads to an overall reduction in the number of suicides.
Some ways to do this include restricting access to pesticides, firearms, and known-used drugs. Other important measures are the introduction of policies that address the
misuse of alcohol
Alcohol abuse encompasses a spectrum of unhealthy alcohol (drug), alcohol drinking behaviors, ranging from binge drinking to alcohol dependence, in extreme cases resulting in health problems for individuals and large scale social problems such ...
and the treatment of
mental disorders
A mental disorder, also referred to as a mental illness or psychiatric disorder, is a behavioral or mental pattern that causes significant distress or impairment of personal functioning. Such features may be persistent, relapsing and remitti ...
.
Gun-control
Gun control, or firearms regulation, is the set of laws or policies that regulate the manufacture, sale, transfer, possession, modification, or use of firearms by civilians.
Most countries have a restrictive firearm guiding policy, with on ...
measures in a number of countries have seen a reduction in suicides and other gun-related deaths.
Purpose of study
The
study of suicide methods aims to identify those commonly used, and the groups at risk of suicide; making methods less accessible may be useful in
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 health ...
.
Limiting the availability of means such as
pesticide
Pesticides are substances that are meant to control pests. This includes herbicide, insecticide, nematicide, molluscicide, piscicide, avicide, rodenticide, bactericide, insect repellent, animal repellent, microbicide, fungicide, and lampri ...
s and
firearm
A firearm is any type of gun designed to be readily carried and used by an individual. The term is legally defined further in different countries (see Legal definitions).
The first firearms originated in 10th-century China, when bamboo tubes ...
s is recommended by a
World Health Report
The ''World Health Report'' (WHR) is a series of annual reports produced by the World Health Organization (WHO). First published in 1995, the ''World Health Report'' is WHO's leading publication. The reports were published every year from 1995 to 2 ...
on suicide and its prevention. The early identification of
mental disorder
A mental disorder, also referred to as a mental illness or psychiatric disorder, is a behavioral or mental pattern that causes significant distress or impairment of personal functioning. Such features may be persistent, relapsing and remitti ...
s and
substance abuse disorder
Substance use disorder (SUD) is the persistent use of drugs (including alcohol) despite substantial harm and adverse consequences as a result of their use. Substance use disorders are characterized by an array of mental/emotional, physical, and b ...
s, follow-up care for those who have attempted suicide, and responsible reporting by the media are all seen to be key in reducing the number of deaths by suicide.
National suicide prevention strategies are also advocated using a comprehensive and coordinated response to suicide prevention. This needs to include the registration and monitoring of suicides and attempted suicide, breaking figures down by age, sex, and method.
Such information allows public health resources to focus on the problems that are relevant in a particular place, or for a given population or subpopulation.
For instance, if firearms are used in a significant number of suicides in one place, then public health policies there could focus on gun safety, such as keeping guns locked away, and the key inaccessible to at-risk family members. If young people are found to be at increased risk of suicide by overdosing on particular medications, then an alternative class of medication may be prescribed instead, a safety plan and monitoring of medication can be put in place, and parents can be educated about how to prevent the hoarding of medication for a future suicide attempt.
Media reporting
Media reporting of the methods used in suicides is "strongly discouraged" by the
World Health Organization
The World Health Organization (WHO) is a specialized agency of the United Nations responsible for international public health. The WHO Constitution states its main objective as "the attainment by all peoples of the highest possible level of h ...
, government health agencies, universities, and the
Associated Press
The Associated Press (AP) is an American non-profit news agency headquartered in New York City. Founded in 1846, it operates as a cooperative, unincorporated association. It produces news reports that are distributed to its members, U.S. newspa ...
among others. Detailed descriptions of suicides or the personal characteristics of the person who died contribute to copycat suicides (
suicide contagion).
Dramatic or inappropriate descriptions of individual suicides by
mass media
Mass media refers to a diverse array of media technologies that reach a large audience via mass communication. The technologies through which this communication takes place include a variety of outlets.
Broadcast media transmit information ...
has been linked specifically to copycat suicides among teenagers.
Writing for the ''New Yorker'' about celebrity suicides, Andrew Solomon wrote that "You who are reading this are at statistically increased risk of suicide right now." In one study, changes in how news outlets reported suicide reduced suicides by a particular method.
Media reporting guidelines also apply to "online content including citizen-generated media coverage". The Recommendations for Reporting on Suicide, created by journalists, suicide prevention groups, and
internet safety
Internet safety or online safety or cyber safety and E-Safety is trying to be safe on the internet and is the act of maximizing a user's awareness of personal safety and security risks to private information and property associated with using the i ...
non-profit organizations, encourage linking to resources such as a
list of suicide crisis lines
Suicide crisis lines can be found in many countries worldwide. Many are geared to a general audience while others are specific to a select demographic such as LGBTQIA+ youth, Native American and Aboriginal Canadian youth. There have been stu ...
and information about
risk factors for suicide
Suicide is the act of intentionally causing one's own death. Mental disorders (including depression, bipolar disorder, schizophrenia, personality disorders, anxiety disorders), physical disorders (such as chronic fatigue syndrome), and subs ...
, and reporting on suicide as a multi-faceted, treatable health issue.
Method restriction
Method restriction, also called ''lethal means reduction'', is an effective way to reduce the number of suicide deaths in the short and medium term. Method restriction is considered a
best practice
A best practice is a method or technique that has been generally accepted as superior to other known alternatives because it often produces results that are superior to those achieved by other means or because it has become a standard way of doing ...
supported by "compelling"
evidence
Evidence for a proposition is what supports this proposition. It is usually understood as an indication that the supported proposition is true. What role evidence plays and how it is conceived varies from field to field.
In epistemology, evidenc ...
.
Some of these actions, such as installing barriers on bridges and reducing the toxicity in gas, require action by governments, industries, or
public utilities
A public utility company (usually just utility) is an organization that maintains the infrastructure for a public service (often also providing a service using that infrastructure). Public utilities are subject to forms of public control and r ...
. At the individual level, method restriction can be as simple as asking a trusted friend or family member to store firearms until the crisis has passed.
According to Danuta Wasserman, professor in
psychiatry
Psychiatry is the medical specialty devoted to the diagnosis, prevention, and treatment of mental disorders. These include various maladaptations related to mood, behaviour, cognition, and perceptions. See glossary of psychiatry.
Initial psych ...
and
suicidology
Suicidology is the scientific study of suicidal behaviour, the causes of suicidalness and suicide prevention. There are many different fields and disciplines involved with suicidology, the two primary ones being psychology and sociology. Every ye ...
at
Karolinska Institute
The Karolinska Institute (KI; sv, Karolinska Institutet; sometimes known as the (Royal) Caroline Institute in English) is a research-led medical university in Solna within the Stockholm urban area of Sweden. The Karolinska Institute is consist ...
, choosing not to restrict access to suicide methods is
unethical
Ethics or moral philosophy is a branch of philosophy that "involves systematizing, defending, and recommending concepts of right and wrong behavior".''Internet Encyclopedia of Philosophy'' The field of ethics, along with aesthetics, concerns ma ...
.
Method restriction is effective and prevents suicides.
It has the largest effect on overall suicide rates when the method being restricted is common and no direct substitution is available.''
'' If the method being restricted is uncommon, or if a substitute is readily available, then it may be effective in individual cases but not produce a large-scale reduction in the number of deaths in a country.
''Method substitution'' is the process of choosing a different suicide method when the first-choice method is inaccessible.
In many cases, when the first-choice method is restricted, the person does not attempt to find a substitute.
Method substitution has been measured over the course of decades, so when a
common method is restricted (for example, by making domestic gas less toxic), overall suicide rates may be suppressed for many years.
If the first-choice suicide method is inaccessible, a method substitution may be made which may be less lethal, tending to result in fewer fatal suicide attempts.
In an example of the
curb cut effect
The curb cut effect is the phenomenon of disability-friendly features being used and appreciated by a larger group than the people they were designed for. For example, many hearing people use closed captioning. With wide use, accessibility is a boo ...
, changes unrelated to suicide have also functioned as suicide method restrictions.
Examples of this include changes to align train doors with platforms, switching from
coal gas
Coal gas is a flammable gaseous fuel made from coal and supplied to the user via a piped distribution system. It is produced when coal is heated strongly in the absence of air. Town gas is a more general term referring to manufactured gaseous ...
to
natural gas
Natural gas (also called fossil gas or simply gas) is a naturally occurring mixture of gaseous hydrocarbons consisting primarily of methane in addition to various smaller amounts of other higher alkanes. Low levels of trace gases like carbo ...
in homes, and
gun control
Gun control, or firearms regulation, is the set of laws or policies that regulate the manufacture, sale, transfer, possession, modification, or use of firearms by civilians.
Most countries have a restrictive firearm guiding policy, with on ...
laws, all of which have reduced suicides despite being intended for a different purpose.
List
Suffocation
Suffocation
Asphyxia or asphyxiation is a condition of deficient supply of oxygen to the body which arises from abnormal breathing. Asphyxia causes generalized hypoxia, which affects primarily the tissues and organs. There are many circumstances that can i ...
, as a classification of suicide method, includes
strangulation
Strangling is compression of the neck that may lead to unconsciousness or death by causing an increasingly hypoxic state in the brain. Fatal strangling typically occurs in cases of violence, accidents, and is one of two main ways that hanging ...
and
hanging
Hanging is the suspension of a person by a noose or ligature around the neck.Oxford English Dictionary, 2nd ed. Hanging as method of execution is unknown, as method of suicide from 1325. The ''Oxford English Dictionary'' states that hanging i ...
.
Suicide by suffocation involves restricting breathing or the amount of oxygen taken in, causing
asphyxia
Asphyxia or asphyxiation is a condition of deficient supply of oxygen to the body which arises from abnormal breathing. Asphyxia causes generalized hypoxia, which affects primarily the tissues and organs. There are many circumstances that can i ...
and eventually
hypoxia
Hypoxia means a lower than normal level of oxygen, and may refer to:
Reduced or insufficient oxygen
* Hypoxia (environmental), abnormally low oxygen content of the specific environment
* Hypoxia (medical), abnormally low level of oxygen in the tis ...
. It is not possible to die simply by holding the breath, since a
reflex
In biology, a reflex, or reflex action, is an involuntary, unplanned sequence or action and nearly instantaneous response to a stimulus.
Reflexes are found with varying levels of complexity in organisms with a nervous system. A reflex occurs ...
causes the
respiratory muscles
The muscles of respiration are the muscles that contribute to inhalation and exhalation, by aiding in the expansion and contraction of the thoracic cavity. The diaphragm and, to a lesser extent, the intercostal muscles drive respiration during q ...
to contract, forcing an in-breath, and the re-establishment of a normal breathing rhythm. Therefore, inhaling an
inert gas
An inert gas is a gas that does not readily undergo chemical reactions with other chemical substances and therefore does not readily form chemical compounds. The noble gases often do not react with many substances and were historically referred to ...
such as
helium
Helium (from el, ἥλιος, helios, lit=sun) is a chemical element with the symbol He and atomic number 2. It is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas and the first in the noble gas group in the periodic table. ...
or
nitrogen
Nitrogen is the chemical element with the symbol N and atomic number 7. Nitrogen is a nonmetal and the lightest member of group 15 of the periodic table, often called the pnictogens. It is a common element in the universe, estimated at se ...
, or a toxic gas such as
carbon monoxide
Carbon monoxide (chemical formula CO) is a colorless, poisonous, odorless, tasteless, flammable gas that is slightly less dense than air. Carbon monoxide consists of one carbon atom and one oxygen atom connected by a triple bond. It is the simple ...
, is used to bring about
unconsciousness
Unconsciousness is a state in which a living individual exhibits a complete, or near-complete, inability to maintain an consciousness, awareness of self and environment or to respond to any human or environmental Stimulus (physiology), stimulus. ...
. , organizations supporting a
right to die
The right to die is a concept based on the opinion that human beings are entitled to end their life or undergo voluntary euthanasia. Possession of this right is often understood that a person with a terminal illness, incurable pain, or without t ...
promoted death by helium inhalation, although most cases using this method in the US were people with psychiatric conditions.
Hanging
Hanging
Hanging is the suspension of a person by a noose or ligature around the neck.Oxford English Dictionary, 2nd ed. Hanging as method of execution is unknown, as method of suicide from 1325. The ''Oxford English Dictionary'' states that hanging i ...
is a common method of suicide.
Hanging involves the use of a
ligature
Ligature may refer to:
* Ligature (medicine), a piece of suture used to shut off a blood vessel or other anatomical structure
** Ligature (orthodontic), used in dentistry
* Ligature (music), an element of musical notation used especially in the me ...
such as a rope or cord attached to an anchor point with the other end used to form a
noose
A noose is a loop at the end of a rope in which the knot tightens under load and can be loosened without untying the knot.
The knot can be used to secure a rope to a post, pole, or animal but only where the end is in a position that the loop can ...
placed around the neck. The cause of death will either be due to strangulation or a
broken neck
A cervical fracture, commonly called a broken neck, is a fracture of any of the seven cervical vertebrae in the neck. Examples of common causes in humans are traffic collisions and diving into shallow water. Abnormal movement of neck bones or pie ...
. About half of attempted
suicides by hanging
Suicide is the act of intentionally causing one's own death. Mental disorders (including depression, bipolar disorder, schizophrenia, personality disorders, anxiety disorders), physical disorders (such as chronic fatigue syndrome), and subs ...
result in death.
People who favor this method are usually unaware that it is often a "slow, painful, and messy method that
eedstechnical knowledge".
Hanging is the prevalent means of suicide in impoverished
pre-industrial societies
Pre-industrial society refers to social attributes and forums of political and cultural organization that were prevalent before the advent of the Industrial Revolution, which occurred from 1750 to 1850. ''Pre-industrial'' refers to a time before ...
, and is more common in
rural
In general, a rural area or a countryside is a geographic area that is located outside towns and cities. Typical rural areas have a low population density and small settlements. Agricultural areas and areas with forestry typically are describ ...
areas than in
urban
Urban means "related to a city". In that sense, the term may refer to:
* Urban area, geographical area distinct from rural areas
* Urban culture, the culture of towns and cities
Urban may also refer to:
General
* Urban (name), a list of people ...
areas. It is also a common means of suicide in situations where other materials are not readily available, such as in
prison
A prison, also known as a jail, gaol (dated, standard English, Australian, and historically in Canada), penitentiary (American English and Canadian English), detention center (or detention centre outside the US), correction center, correc ...
s.
Hanging was the most common method in
traditional Chinese culture
Chinese culture () is one of the world's oldest cultures, originating thousands of years ago. The culture prevails across a large geographical region in East Asia and is extremely diverse and varying, with customs and traditions varying grea ...
,
[ as it was believed that the rage involved in such a death permitted the person's ]spirit
Spirit or spirits may refer to:
Liquor and other volatile liquids
* Spirits, a.k.a. liquor, distilled alcoholic drinks
* Spirit or tincture, an extract of plant or animal material dissolved in ethanol
* Volatile (especially flammable) liquids, ...
to haunt and torment survivors. In the Chinese culture, suicide by hanging was used as an act of revenge by women and of defiance by powerless officials, who used it as a "final, but unequivocal, way of standing still against and above oppressive authorities".[ Chinese people would often approach the act ceremonially, including the use of proper attire.][.]
Poisoning
Suicide by poisoning
A poison can be any substance that is harmful to the body. It can be swallowed, inhaled, injected or absorbed through the skin. Poisoning is the harmful effect that occurs when too much of that substance has been taken. Poisoning is not to ...
, also called ''self-poisoning'', is usually classed as a drug overdose
A drug overdose (overdose or OD) is the ingestion or application of a drug or other substance in quantities much greater than are recommended. when drugs such as painkillers or recreational drugs are used. The use of pesticides to self-poison is the most common method used in some countries. Poisoning through the means of toxic plants
Plants that produce toxins are referred to as poisonous plants. Plants that cause irritation on contact are also described as "poisonous".
The toxins in poisonous plants affect herbivores, and deter them from consuming the plants. Plants cannot ...
is usually slow and painful.
Pesticide
, worldwide, around 30% of suicides were from pesticide poisoning
A pesticide poisoning occurs when pesticides, chemicals intended to control a pest, affect non-target organisms such as humans, wildlife, plant, or bees. There are three types of pesticide poisoning. The first of the three is a single and short- ...
s. The use of this method varies markedly in different areas of the world, from 0.9% in Europe to about 50% in the Pacific region.[ In the US, pesticide poisoning is used in about 12 suicides per year.
Method restriction has been an effective way to reduce suicide by poisoning in many countries. In Finland, limiting access to ]parathion
Parathion, also called parathion-ethyl or diethyl parathion and locally known as "Folidol", is an organophosphate insecticide and acaricide. It was originally developed by IG Farben in the 1940s. It is highly toxic to non-target organisms, incl ...
in the 1960s resulted in a rapid decline in both poisoning-related suicides and total suicide deaths for several years, and a slower decline in subsequent years. In Sri Lanka
Sri Lanka (, ; si, ශ්රී ලංකා, Śrī Laṅkā, translit-std=ISO (); ta, இலங்கை, Ilaṅkai, translit-std=ISO ()), formerly known as Ceylon and officially the Democratic Socialist Republic of Sri Lanka, is an ...
, both suicide by pesticide and total suicides declined after first toxicity class I and later class II endosulfan
Endosulfan is an off-patent organochlorine insecticide and acaricide that is being phased out globally. It became a highly controversial agrichemical due to its acute toxicity, potential for bioaccumulation, and role as an endocrine disruptor. ...
were banned. Overall suicide deaths were cut by 70%, with 93,000 lives saved over 20 years as a result of banning these pesticides. In Korea, banning a single pesticide, paraquat
Paraquat (trivial name; ), or ''N'',''N''′-dimethyl-4,4′-bipyridinium dichloride (systematic name), also known as methyl viologen, is an organic compound with the chemical formula C6H7N)2l2. It is classified as a viologen, a family of redox ...
, halved the number of suicides by pesticide poisoning and reduced the total number of suicides in that country.
Drug overdose
A drug overdose
A drug overdose (overdose or OD) is the ingestion or application of a drug or other substance in quantities much greater than are recommended. involves taking a dose of a drug
A drug is any chemical substance that causes a change in an organism's physiology or psychology when consumed. Drugs are typically distinguished from food and substances that provide nutritional support. Consumption of drugs can be via insuffla ...
that exceeds safe levels. In the UK (England and Wales) until 2013, a drug overdose was the most common suicide method in females. In 2019 in males the percentage is 16%. Self-poisoning accounts for the highest number of non-fatal suicide attempts. Overdose attempts using painkillers
An analgesic drug, also called simply an analgesic (American English), analgaesic (British English), pain reliever, or painkiller, is any member of the group of Pharmaceutical drug, drugs used to achieve relief from pain (that is, analgesia or p ...
are among the most common, due to their easy availability over-the-counter. Paracetamol
Paracetamol, also known as acetaminophen, is a medication used to treat fever and mild to moderate pain. Common brand names include Tylenol and Panadol.
At a standard dose, paracetamol only slightly decreases body temperature; it is inferior ...
is the most widely used analgesic worldwide and is commonly used in overdose attempts. Paracetamol poisoning
Paracetamol poisoning, also known as acetaminophen poisoning, is caused by excessive use of the medication paracetamol (acetaminophen). Most people have few or non-specific symptoms in the first 24 hours following overdose. These include f ...
is a common cause of acute liver failure
Acute liver failure is the appearance of severe complications rapidly after the first signs (such as jaundice) of liver disease, and indicates that the liver has sustained severe damage (loss of function of 80–90% of liver cells). The complicati ...
. In the United States about 60% of suicide attempts and 14% of suicide deaths involve drug overdoses.[ The risk of death in suicide attempts involving overdose is about 2%.][
]
Carbon monoxide
A particular type of poisoning involves the inhalation of high levels of carbon monoxide
Carbon monoxide (chemical formula CO) is a colorless, poisonous, odorless, tasteless, flammable gas that is slightly less dense than air. Carbon monoxide consists of one carbon atom and one oxygen atom connected by a triple bond. It is the simple ...
(CO). Death usually occurs through hypoxia
Hypoxia means a lower than normal level of oxygen, and may refer to:
Reduced or insufficient oxygen
* Hypoxia (environmental), abnormally low oxygen content of the specific environment
* Hypoxia (medical), abnormally low level of oxygen in the tis ...
. A nonfatal attempt can result in memory loss and other symptoms.
Carbon monoxide is a colorless and odorless gas
Gas is one of the four fundamental states of matter (the others being solid, liquid, and plasma).
A pure gas may be made up of individual atoms (e.g. a noble gas like neon), elemental molecules made from one type of atom (e.g. oxygen), or ...
, so its presence cannot be detected by sight or smell. It acts by binding preferentially to the hemoglobin
Hemoglobin (haemoglobin BrE) (from the Greek word αἷμα, ''haîma'' 'blood' + Latin ''globus'' 'ball, sphere' + ''-in'') (), abbreviated Hb or Hgb, is the iron-containing oxygen-transport metalloprotein present in red blood cells (erythrocyte ...
in the bloodstream, displacing oxygen molecules and progressively deoxygenating the blood, eventually resulting in the failure of cellular respiration
Cellular respiration is the process by which biological fuels are oxidised in the presence of an inorganic electron acceptor such as oxygen to produce large amounts of energy, to drive the bulk production of ATP. Cellular respiration may be des ...
and death. Carbon monoxide is extremely dangerous to bystanders and people who may discover the body; right-to-die advocate Philip Nitschke
Philip Haig Nitschke (; born 8 August 1947) is an Australian humanist, author, former physician, and founder and director of the pro-euthanasia group Exit International. He campaigned successfully to have a legal euthanasia law passed in Austra ...
has therefore recommended against this method.
Before air quality
Air pollution is the contamination of air due to the presence of substances in the atmosphere that are harmful to the health of humans and other living beings, or cause damage to the climate or to materials. There are many different types ...
regulations and catalytic converter
A catalytic converter is an exhaust emission control device that converts toxic gases and pollutants in exhaust gas from an internal combustion engine into less-toxic pollutants by catalyzing a redox reaction. Catalytic converters are usually ...
s, suicide by carbon monoxide poisoning was often achieved by running a car's engine in an enclosed space such as a garage, or by redirecting a running car's exhaust back inside the cabin with a hose. Motor car exhaust may have contained up to 25% carbon monoxide. Catalytic converters found on all modern automobiles eliminate over 99% of carbon monoxide produced. As a further complication, the amount of unburned gasoline in emissions can make exhaust unbearable to breathe well before a person loses consciousness.
Charcoal-burning suicide
Charcoal-burning suicide is suicide by burning charcoal in a closed room or area. Death occurs by carbon monoxide poisoning.
Mechanism of action
As the charcoal burns, the concentration of carbon monoxide (CO), produced by the incomplete combus ...
induces death from carbon monoxide poisoning
Carbon monoxide poisoning typically occurs from breathing in carbon monoxide (CO) at excessive levels. Symptoms are often described as "flu-like" and commonly include headache, dizziness, weakness, vomiting, chest pain, and confusion. Large e ...
. Originally used in Hong Kong
Hong Kong ( (US) or (UK); , ), officially the Hong Kong Special Administrative Region of the People's Republic of China ( abbr. Hong Kong SAR or HKSAR), is a city and special administrative region of China on the eastern Pearl River Delt ...
, it spread to Japan
Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...
, where small charcoal-burning heaters (''hibachi
The is a traditional Japanese heating device. It is a brazier which is either round, cylindrical, or box-shaped, open-topped container, made from or lined with a heatproof material and designed to hold burning charcoal. It is believed date ...
'') or stoves (''shichirin
]
The ''shichirin'' (; , literally "seven wheels") is a small charcoal grill.
Etymology
''Shichirin'' being a compound word made up of the characters 七 (''shichi'' or ''nana'', "seven") and 輪 (''rin'' or ''wa'', "wheel," "loop," or "ri ...
'') have been used in a sealed room. By 2001, this method accounted for 25% of deaths from suicide in Japan. Nonfatal attempts can result in severe brain damage
Neurotrauma, brain damage or brain injury (BI) is the destruction or degeneration of brain cells. Brain injuries occur due to a wide range of internal and external factors. In general, brain damage refers to significant, undiscriminating t ...
due to cerebral anoxia
Cerebral hypoxia is a form of hypoxia (reduced supply of oxygen), specifically involving the brain; when the brain is completely deprived of oxygen, it is called ''cerebral anoxia''. There are four categories of cerebral hypoxia; they are, in o ...
.
Other toxins
Gas-oven suicide was a common method of suicide in the early to mid-20th centuries in some North American and European countries. Household gas was originally coal gas
Coal gas is a flammable gaseous fuel made from coal and supplied to the user via a piped distribution system. It is produced when coal is heated strongly in the absence of air. Town gas is a more general term referring to manufactured gaseous ...
, also called illuminating gas
The history of gaseous fuel, important for lighting, heating, and cooking purposes throughout most of the 19th century and the first half of the 20th century, began with the development of analytical and pneumatic chemistry in the 18th century. T ...
, or town gas, which was composed of methane, hydrogen and carbon monoxide. Stoves of this era required one to manually ignite a pilot light
Merker Tankless water heating, tankless gas-fired water heater from the 1930s, with pilot light clearly visible through the aperture in the front cover. The large opening allowed for the manual lighting of the pilot light by a lit match or taper
...
with a match
A match is a tool for starting a fire. Typically, matches are made of small wooden sticks or stiff paper. One end is coated with a material that can be ignited by friction generated by striking the match against a suitable surface. Wooden matc ...
; without the combustion the gas cloud would spread unimpeded. Carbon monoxide poisoning
Carbon monoxide poisoning typically occurs from breathing in carbon monoxide (CO) at excessive levels. Symptoms are often described as "flu-like" and commonly include headache, dizziness, weakness, vomiting, chest pain, and confusion. Large e ...
was the proximate cause of death. Natural gas
Natural gas (also called fossil gas or simply gas) is a naturally occurring mixture of gaseous hydrocarbons consisting primarily of methane in addition to various smaller amounts of other higher alkanes. Low levels of trace gases like carbo ...
, introduced in the 1960s, is composed of methane, ethane and an odorant
An aroma compound, also known as an odorant, aroma, fragrance or flavoring, is a chemical compound that has a smell or odor. For an individual chemical or class of chemical compounds to impart a smell or fragrance, it must be sufficiently vol ...
added for safety. The suicide rates by domestic gas fell from 1960 to 1980, as changes were made to the formula to make it less lethal.
Shooting
In the United States suicide by firearm is the most lethal method of suicide, resulting in a fatality 90% of the time,[ and is thus the leading cause of death by suicide as of 2017.] Worldwide, firearm prevalence in suicides varies widely, depending on the acceptance and availability of firearms in a culture. The use of firearms in suicides ranges from less than 10% in Australia to 50.5% in the U.S., where it is the most common method of suicide.
Generally, the bullet
A bullet is a kinetic projectile, a component of firearm ammunition that is shot from a gun barrel. Bullets are made of a variety of materials, such as copper, lead, steel, polymer, rubber and even wax. Bullets are made in various shapes and co ...
will be aimed at point-blank range
Point-blank range is any distance over which a certain firearm can hit a target without the need to compensate for bullet drop, and can be adjusted over a wide range of distances by sighting in the firearm. If the bullet leaves the barrel paral ...
. Surviving a self-inflicted gunshot may result in severe chronic pain
Chronic pain is classified as pain that lasts longer than three to six months. In medicine, the distinction between Acute (medicine), acute and Chronic condition, chronic pain is sometimes determined by the amount of time since onset. Two commonly ...
as well as reduced cognitive abilities and motor function, subdural hematoma
A subdural hematoma (SDH) is a type of bleeding in which a Hematoma, collection of blood—usually but not always associated with a traumatic brain injury—gathers between the inner layer of the dura mater and the arachnoid mater of the meninges ...
, foreign bodies in the head, pneumocephalus
Pneumocephalus is the presence of air or gas within the cranial cavity. It is usually associated with disruption of the skull: after head and facial trauma, tumors of the skull base, after neurosurgery or otorhinolaryngology, and rarely, spont ...
and cerebrospinal fluid leak
A cerebrospinal fluid leak (CSF leak or CSFL) is a medical condition where the cerebrospinal fluid (CSF) surrounding the brain or spinal cord leaks out of one or more holes or tears in the dura mater. A cerebrospinal fluid leak can be either crani ...
s. For temporal bone directed bullets, temporal lobe abscess, meningitis, aphasia, hemianopsia, and hemiplegia are common late intracranial complications. As many as 50% of people who survive gunshot wounds directed at the temporal bone suffer facial nerve damage, usually due to a severed nerve.
Gun control
Reducing access to guns at a population level decreases the risk of suicide by firearms.
Fewer people die from suicide overall in places with stricter laws regulating the use, purchase, and trading of firearms. Suicide risk goes up when firearms are more available.
Gun control is a primary method of reducing suicide by people who live in a home with guns. Prevention measures include simple actions such as locking all firearms in a gun safe
A gun safe is a safe designed for storing one or more firearms and/or ammunitions. Gun safes are primarily used to prevent access by unauthorized or unqualified persons (such as children), for burglary protection and, in more capable safes, t ...
or installing gun lock
Gun safety is the study and practice of using, transporting, storing and disposing of firearms and ammunition, including the training of gun users, the design of weapons, and formal and informal regulation of gun production, distribution, and ...
s. Some stores that sell guns provide temporary storage as a service; in other cases, a trusted friend or family member will offer to store the guns until the crisis has passed. When a person is going through a crisis, red flag law
In the United States, a red flag law is a gun violence prevention law that permits a state court to order the temporary removal of firearms from a person who they believe may present a danger to others or themselves. A judge makes the determina ...
s in some places allow family members to petition the courts to have firearms temporarily removed and stored elsewhere.
More firearms are involved in suicide than are involved in homicides in the United States. A 1999 study of California
California is a U.S. state, state in the Western United States, located along the West Coast of the United States, Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the List of states and territori ...
and gun mortality found that a person is more likely to die by suicide if they have purchased a firearm, with a measurable increase of suicide by firearm beginning at most a week after the purchase and continuing for six years or more.
The United States has both the highest number of suicides and firearms in circulation in a developed country, and when gun ownership rises so too does suicide involving the use of a firearm. A 2004 report by the National Academy of Sciences
The National Academy of Sciences (NAS) is a United States nonprofit, non-governmental organization. NAS is part of the National Academies of Sciences, Engineering, and Medicine, along with the National Academy of Engineering (NAE) and the Nati ...
found an association between estimated household firearm ownership and gun suicide
Suicide is the act of intentionally causing one's own death. Mental disorders (including depression, bipolar disorder, schizophrenia, personality disorders, anxiety disorders), physical disorders (such as chronic fatigue syndrome), and s ...
rates, though a study by two Harvard researchers did not find a statistically significant
In statistical hypothesis testing, a result has statistical significance when it is very unlikely to have occurred given the null hypothesis (simply by chance alone). More precisely, a study's defined significance level, denoted by \alpha, is the p ...
association between household firearms and gun suicide rates, except in the suicides of children aged 5–14. Another study found that gun prevalence rates were positively associated with suicide rates among people aged 15 to 24, and 65 to 84, but not among those aged 25 to 64. Case-control studies conducted in the United States have consistently shown an association between guns in the home and increased suicide risk, especially for loaded guns in the home. Numerous ecological and time series studies have also shown a positive association between gun ownership rates and suicide rates. This association tends to only exist for firearm-related and overall suicides, not for non-firearm suicides. A 2013 review found that studies consistently found a relationship between gun ownership and gun-related suicides, with few exceptions. A 2016 study found a positive association between gun ownership and both gun-related and overall suicides among men, but not among women; gun ownership was only strongly associated with gun-related suicides among women. During the 1980s and early 1990s, there was a strong upward trend in adolescent suicides with a gun, as well as a sharp overall increase in suicides among those age 75 and over. A 2014 systematic review and meta-analysis found that access to firearms was associated with a higher risk of suicide.
A 2006 study found an accelerated decline in firearm-related suicides in Australia after the introduction of nationwide gun control. The same study found no evidence of substitution to other methods. Multiple studies in Canada found that gun suicides declined after gun control, but other methods rose, leading to no change in the overall rates. Similarly, in New Zealand, gun suicides declined after more legislation, but overall suicide rates did not change; this might be due to the highly stringent firearm storage laws and very low prevalence of handgun ownership in New Zealand. A study about Canada found no significant correlations between provincial firearm ownership and overall provincial suicide rates.
Jumping
In the United States, jumping is among the least common methods of suicide (less than 2% of all reported suicides in 2005). In a 75-year period to 2012, there were around 1,400 suicides at the Golden Gate Bridge
Between 1937 and 2012, an estimated 1,400 bodies were recovered of people who had jumped from the Golden Gate Bridge, located in the San Francisco Bay Area in the United States.
In 2013, 118 potential jumpers were talked down from their attemp ...
. In New Zealand, secure fencing at the Grafton Bridge
Grafton Bridge is a road bridge spanning Grafton Gully in Auckland, New Zealand. Built of reinforced concrete in 1910, it connects the Auckland CBD and Karangahape Road with Grafton. It spans about 97.6 metres (320 feet), rises 25.6 metr ...
substantially reduced the rate of suicides.
Jumping is the most common method of suicide in Hong Kong
Hong Kong ( (US) or (UK); , ), officially the Hong Kong Special Administrative Region of the People's Republic of China ( abbr. Hong Kong SAR or HKSAR), is a city and special administrative region of China on the eastern Pearl River Delt ...
, accounting for 52.1% of all reported suicide cases in 2006 and similar rates for the years before that. The Centre for Suicide Research and Prevention of the University of Hong Kong
The University of Hong Kong (HKU) (Chinese: 香港大學) is a public research university in Hong Kong. Founded in 1887 as the Hong Kong College of Medicine for Chinese, it is the oldest tertiary institution in Hong Kong. HKU was also the fi ...
believes that it may be due to the abundance of easily accessible high-rise building
A tower block, high-rise, apartment tower, residential tower, apartment block, block of flats, or office tower is a tall building, as opposed to a low-rise building and is defined differently in terms of height depending on the jurisdictio ...
s in Hong Kong.
Jumping deaths can often be prevented through the construction of fencing or other safety equipment. For example, suicide by jumping into a volcanic crater
A volcanic crater is an approximately circular depression in the ground caused by Volcano, volcanic activity. It is typically a bowl-shaped feature containing one or more vents. During Types of volcanic eruptions, volcanic eruptions, molten magm ...
is a rare method of suicide. Mount Mihara
is an active volcano on the Japanese isle of Izu Ōshima. Although the volcano is predominantly basaltic, major eruptions have occurred at intervals of 100–150 years.
Background
Mount Mihara's major eruption in 1986 saw lava fountains up to ...
in Japan
Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...
briefly became a notorious suicide site during the Great Depression
The Great Depression (19291939) was an economic shock that impacted most countries across the world. It was a period of economic depression that became evident after a major fall in stock prices in the United States. The economic contagio ...
following media reports of a suicide there. 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 ...
s in the ensuing years prompted the erection of a protective fence surrounding the crater.
Cutting and stabbing
A fatal self-inflicted wound to the wrist
In human anatomy, the wrist is variously defined as (1) the Carpal bones, carpus or carpal bones, the complex of eight bones forming the proximal skeletal segment of the hand; "The wrist contains eight bones, roughly aligned in two rows, known ...
is termed a ''deep wrist injury'', and is often preceded by several tentative surface-breaking attempts known as ''hesitation wounds'', indicating indecision or a self-harm
Self-harm is intentional behavior that is considered harmful to oneself. This is most commonly regarded as direct injury of one's own skin tissues usually without a suicidal intention. Other terms such as cutting, self-injury and self-mutilatio ...
tactic. For every suicide by wrist cutting, there are many more nonfatal attempts, so that the number of actual deaths using this method is very low.
Wounds from suicide attempts involve the non-dominant hand, with damage often done to the median nerve
The median nerve is a nerve in humans and other animals in the upper limb. It is one of the five main nerves originating from the brachial plexus.
The median nerve originates from the lateral and medial cords of the brachial plexus, and has contr ...
, ulnar nerve
In human anatomy, the ulnar nerve is a nerve that runs near the ulna bone. The ulnar collateral ligament of elbow joint is in relation with the ulnar nerve. The nerve is the largest in the human body unprotected by muscle or bone, so injury is ...
, radial artery
In human anatomy, the radial artery is the main artery of the lateral aspect of the forearm.
Structure
The radial artery arises from the bifurcation of the brachial artery in the antecubital fossa. It runs distally on the anterior part of the f ...
, palmaris longus muscle
The palmaris longus is a muscle visible as a small tendon located between the flexor carpi radialis and the flexor carpi ulnaris, although it is not always present. It is absent in about 14 percent of the population; this number can vary in Afric ...
, and flexor carpi radialis muscle
In anatomy, flexor carpi radialis is a muscle of the human forearm that acts to flex and (radially) abduct the hand. The Latin ''carpus'' means wrist; hence flexor carpi is a flexor of the wrist.
Origin and insertion
The flexor carpi radialis is ...
. Such injuries can severely affect the function of the hand, and the inability caused to carry out work or interests increases the risk of further attempts.
Seppuku is a form of Japanese ritual suicide
Suicide is the act of intentionally causing one's own death. Mental disorders (including depression, bipolar disorder, schizophrenia, personality disorders, anxiety disorders), physical disorders (such as chronic fatigue syndrome), and s ...
by disembowelment
Disembowelment or evisceration is the removal of some or all of the organs of the gastrointestinal tract (the bowels, or viscera), usually through a horizontal incision made across the abdominal area. Disembowelment may result from an accident ...
. It was originally reserved for samurai
were the hereditary military nobility and officer caste of medieval and early-modern Japan from the late 12th century until their abolition in 1876. They were the well-paid retainers of the '' daimyo'' (the great feudal landholders). They h ...
in their code of honour
Code of Honour (Chinese: 正义武馆) is a Malaysian-Singaporean television drama series and the fifth production by MediaCorp Studios Malaysia Sdn Bhd. It stars Elvin Ng , Rui En, Andie Chen , Paige Chua , Zheng Geping , Chris Tong
& Tiffany ...
. It is not often used in the modern day because it is painful and slow.
Drowning
Suicide by drowning
Drowning is a type of suffocation induced by the submersion of the mouth and nose in a liquid. Most instances of fatal drowning occur alone or in situations where others present are either unaware of the victim's situation or unable to offer a ...
is the act of deliberately submerging oneself in water or other liquid to prevent breath
Breathing (or ventilation) is the process of moving air into and from the lungs to facilitate gas exchange with the internal environment, mostly to flush out carbon dioxide and bring in oxygen.
All aerobic creatures need oxygen for cellular ...
ing. It accounts for less than 2% of all suicides in the United States. Of those who attempt suicide by drowning in the US, about half die.
Starvation and dehydration
A classification has been made of ''Voluntarily Stopping Eating and Drinking'' (VSED) which is often resorted to in terminal illness. This includes fasting
Fasting is the abstention from eating and sometimes drinking. From a purely physiological context, "fasting" may refer to the metabolic status of a person who has not eaten overnight (see " Breakfast"), or to the metabolic state achieved after ...
and dehydration
In physiology, dehydration is a lack of total body water, with an accompanying disruption of metabolic processes. It occurs when free water loss exceeds free water intake, usually due to exercise, disease, or high environmental temperature. Mil ...
, and has also been referred to as ''autoeuthanasia''.
Fasting to death has been used by Hindu
Hindus (; ) are people who religiously adhere to Hinduism.Jeffery D. Long (2007), A Vision for Hinduism, IB Tauris, , pages 35–37 Historically, the term has also been used as a geographical, cultural, and later religious identifier for ...
, Buddhist
Buddhism ( , ), also known as Buddha Dharma and Dharmavinaya (), is an Indian religion or philosophical tradition based on teachings attributed to the Buddha. It originated in northern India as a -movement in the 5th century BCE, and ...
, and Jain
Jainism ( ), also known as Jain Dharma, is an Indian religion. Jainism traces its spiritual ideas and history through the succession of twenty-four tirthankaras (supreme preachers of ''Dharma''), with the first in the current time cycle being ...
ascetics and householders, as a ritual method of suicide known as Prayopavesa
Prayopavesa ( sa, प्रायोपवेशनम्, IAST prāyopaveśanam, literally ''resolving to die through fasting'') is a practice in Hinduism that denotes the death by fasting of a person who has no desire or ambition left, and no r ...
in Hinduism
Hinduism () is an Indian religion or '' dharma'', a religious and universal order or way of life by which followers abide. As a religion, it is the world's third-largest, with over 1.2–1.35 billion followers, or 15–16% of the global p ...
; Sokushinbutsu
are a kind of Buddhist mummy. In Japan the term refers to the practice of Buddhist monks observing asceticism to the point of death and entering mummification while alive. Mummified monks are seen in a number of Buddhist countries. Only in Japa ...
historically in Buddhism
Buddhism ( , ), also known as Buddha Dharma and Dharmavinaya (), is an Indian religion or philosophical tradition based on teachings attributed to the Buddha. It originated in northern India as a -movement in the 5th century BCE, and gra ...
; and as Sallekhana
''Sallekhana'' (IAST: ), also known as ''samlehna'', ''santhara'', ''samadhi-marana'' or ''sanyasana-marana'', is a supplementary vow to the ethical code of conduct of Jainism. It is the religious practice of voluntarily fasting to death by ...
in Jainism
Jainism ( ), also known as Jain Dharma, is an Indian religions, Indian religion. Jainism traces its spiritual ideas and history through the succession of twenty-four tirthankaras (supreme preachers of ''Dharma''), with the first in the current ...
. Cathars
Catharism (; from the grc, καθαροί, katharoi, "the pure ones") was a Christian dualist or Gnostic movement between the 12th and 14th centuries which thrived in Southern Europe, particularly in northern Italy and southern France. Fol ...
also fasted to death after receiving the consolamentum
''Consolamentum'' (called heretication by its Catholic opponents) was the unique sacrament of the Cathars.
Cathars believed in original sin, and – like Gnostics – believed temporal pleasure to be sinful or unwise. The process of living thus i ...
sacrament, in order to die while in a morally perfect state. This method of death is also associated with the political protest of the hunger strike
A hunger strike is a method of non-violent resistance in which participants fast as an act of political protest, or to provoke a feeling of guilt in others, usually with the objective to achieve a specific goal, such as a policy change. Most ...
such as the 1981 Irish hunger strike
The 1981 Irish hunger strike was the culmination of a five-year protest during the Troubles by Irish republicanism, Irish republican prisoners in Northern Ireland. The protest began as the blanket protest in 1976, when the British government ...
in which ten prisoners died.
Death from dehydration can take from several days to a few weeks. This means that unlike many other suicide methods, it cannot be accomplished impulsively. Those who die by terminal dehydration typically lapse into unconsciousness before death, and may also experience delirium
Delirium (also known as acute confusional state) is an organically caused decline from a previous baseline of mental function that develops over a short period of time, typically hours to days. Delirium is a syndrome encompassing disturbances in ...
and deranged serum sodium
Sodium ions (Na) are necessary in small amounts for some types of plants,
but sodium as a nutrient is more generally needed in larger amounts by animals, due to their use of it for generation of nerve impulses and for maintenance of electrolyte ...
.
Terminal dehydration
Terminal dehydration is dehydration to the point of death. Some scholars make a distinction between "terminal dehydration" and "termination by dehydration". Courts in the United StatesNL Cantor (1987). Legal frontiers of death and dying. Indiana Un ...
has been described as having substantial advantages over physician-assisted suicide with respect to self-determination, access, professional integrity, and social implications. Specifically, a patient has a right to refuse treatment and it would be a personal assault for someone to force water on a patient, but such is not the case if a doctor merely refuses to provide lethal medication. But it also has distinctive drawbacks as a humane means of voluntary death. One survey of hospice nurses found that nearly twice as many had cared for patients who chose voluntary refusal of food and fluids to hasten death as had cared for patients who chose physician-assisted suicide. They also rated fasting and dehydration as causing less suffering and pain and being more peaceful than physician-assisted suicide. Other sources note very painful side effects of dehydration, including seizures, skin cracking and bleeding, blindness, nausea, vomiting, cramping and severe headaches.
Collision with or of a vehicle
Another suicide method is to lie down, or throw oneself, in the path of a fast-moving vehicle, either on the road or onto railway tracks. Nonfatal attempts may result in profound injuries, such as multiple bone fractures, amputations
Amputation is the removal of a limb by trauma, medical illness, or surgery. As a surgical measure, it is used to control pain or a disease process in the affected limb, such as malignancy or gangrene. In some cases, it is carried out on indivi ...
, concussion
A concussion, also known as a mild traumatic brain injury (mTBI), is a head injury that temporarily affects brain functioning. Symptoms may include loss of consciousness (LOC); memory loss; headaches; difficulty with thinking, concentration, ...
and severe mental
Mental may refer to:
* of or relating to the mind
Films
* ''Mental'' (2012 film), an Australian comedy-drama
* ''Mental'' (2016 film), a Bangladeshi romantic-action movie
* ''Mental'', a 2008 documentary by Kazuhiro Soda
* ''Mental'', a 2014 O ...
and physical handicapping.
Road
Some people use intentional car crashes as a suicide method. This especially applies to single-occupant, single-vehicle wrecks, although some suicidal people cause head-on collision
A head-on collision is a traffic collision where the front ends of two vehicles such as cars, trains, ships or planes hit each other when travelling in opposite directions, as opposed to a side collision or rear-end collision.
Rail transport ...
s with heavier vehicles. Even single-vehicle collisions may harm other road users; for example, a driver who brakes abruptly or swerves to avoid a suicidal person may collide with something else on the road, resulting in harm to the driver or others. Both the targeted driver and bystanders may be traumatized
Psychological trauma, mental trauma or psychotrauma is an emotional response to a distressing event or series of events, such as accidents, rape, or natural disasters. Reactions such as psychological shock and psychological denial are typical. ...
by the experience, even if everyone survives.
The real percentage of suicides among motor vehicle fatalities is not reliably known and likely varies by the ease of accessing a car and the ease of accessing other methods. One review article
A review article is an article that summarizes the current state of understanding on a topic within a certain discipline. A review article is generally considered a secondary source since it may analyze and discuss the method and conclusions i ...
suggested that more than 2% of crashes result from suicidal intent. A study in Switzerland indicated that 1% of deaths by suicide involved a motor vehicle collision.
Rail
On railway tracks above ground, somebody may simply lie down or stand on the tracks, as the speed of an approaching train prevents its easy stopping. This type of suicide may cause trauma
Trauma most often refers to:
* Major trauma, in physical medicine, severe physical injury caused by an external source
* Psychological trauma, a type of damage to the psyche that occurs as a result of a severely distressing event
*Traumatic i ...
for the train driver.
Data gathered to 2014 showed that there were 3,000 suicides and 800 trespass-related injuries on the European railways each year.
A large number of suicides in Japan every year involve the railway system. Suicide by train is seen as a social problem
A social issue is a problem that affects many people within a society. It is a group of common problems in present-day society and ones that many people strive to solve. It is often the consequence of factors extending beyond an individual's cont ...
, especially in the larger cities such as Tokyo
Tokyo (; ja, 東京, , ), officially the Tokyo Metropolis ( ja, 東京都, label=none, ), is the capital and largest city of Japan. Formerly known as Edo, its metropolitan area () is the most populous in the world, with an estimated 37.468 ...
or Nagoya
is the largest city in the Chūbu region, the fourth-most populous city and third most populous urban area in Japan, with a population of 2.3million in 2020. Located on the Pacific coast in central Honshu, it is the capital and the most pop ...
, because it disrupts train schedules, damages equipment, harms the drivers, and, if one occurs during the morning rush-hour, causes numerous commuters to arrive late for work. Suicide by train persists despite a common policy among life insurance companies to deny payment to the beneficiary in the event of suicide by train (payment is usually made in the event of most other forms of suicide). Suicides involving the high-speed bullet-train, or ''Shinkansen
The , colloquially known in English as the bullet train, is a network of high-speed railway lines in Japan. Initially, it was built to connect distant Japanese regions with Tokyo, the capital, to aid economic growth and development. Beyond l ...
'' are extremely rare, as the tracks are usually inaccessible to the public (i.e. elevated and/or protected by tall fences with barbed wire) and legislation mandates additional fines against the family and next-of-kin of the person who died by suicide. As in Belgium, family members of the person who died by suicide may be expected to cover the cost of rail disruption, which can be significantly extensive. It has been argued this prevents possible suicide, as the person who is considering suicide would want to spare the family not only the trauma of a lost family member but also being sued in court.
The U.S. Federal Railroad Administration
The Federal Railroad Administration (FRA) is an agency in the United States Department of Transportation (DOT). The agency was created by the Department of Transportation Act of 1966. The purpose of the FRA is to promulgate and enforce rail saf ...
reports that there are 300 to 500 suicides by train each year. The agency also reported that those suicides on railway rights-of-ways were by people who tended to live near railroad tracks, were less likely to have access to firearms, and were significantly compromised by both severe mental disorder and substance abuse.
=Reduction
=
Railway-related suicides are rarely impulsive, and this view has led to research on behaviour analysis using CCTV
Closed-circuit television (CCTV), also known as video surveillance, is the use of video cameras to transmit a signal to a specific place, on a limited set of monitors. It differs from broadcast television in that the signal is not openly t ...
at known hotspots. Some behaviour patterns are implicated such as station-hopping, platform switching, standing away from others, letting a number of trains go by, and standing close to where trains enter. Surveillance cameras are viewable by railway staff. Media reporting has been linked to increased rail suicide attempts.
Public access to rail tracks may be restricted by the erection of fences. Fencing on both sides of the rail lines are carried out. Other preventive measures are landscaping to create tree and bush hedging as a natural fencing, and the installation of prohibitive signage. Fencing and landscaping have shown significant reductions in suicide attempts, and signage a lesser reduction. Sometimes vegetation along the tracks can obscure the view of the train driver and the removal of this is also advocated.
The installation of platform screen doors
Platform screen doors (PSDs), also known as platform edge doors (PEDs), are used at some train, rapid transit and people mover stations to separate the platform from train tracks, as well as on some bus rapid transit, tram and light rail syste ...
in many stations and countries has significantly decreased the numbers of suicides, notably in Hong Kong. In Japan the use of calming blue lights on station platforms is estimated to have resulted in an 84 per cent reduction in suicide attempts.
On the London Underground
The London Underground (also known simply as the Underground or by its nickname the Tube) is a rapid transit system serving Greater London and some parts of the adjacent ceremonial counties of England, counties of Buckinghamshire, Essex and He ...
the presence of a platform drainage pit has been shown to halve the number of deaths from suicide attempts.
Air
Toward the end of the 20th century, one or two pilots in the US died by suicide by aircraft each year. The pilot was usually flying alone at the time, and was using alcohol or drugs about half the time. In the rare case of a pilot engaging in murder–suicide, the number of innocent people is sometimes very high. On 24 March 2015, a Germanwings co-pilot deliberately crashed Germanwings Flight 9525
Germanwings Flight 9525 PDF of the English translation of the final report and thoriginal French version(which the BEA notes on PDF p. 2/110 of the English PDF is the primary work of reference) was a scheduled international passenger flight fr ...
into the French Alps
The French Alps are the portions of the Alps mountain range that stand within France, located in the Auvergne-Rhône-Alpes and Provence-Alpes-Côte d'Azur regions. While some of the ranges of the French Alps are entirely in France, others, such as ...
to kill himself, killing 150 people with him. Suicide by pilot has also been proposed as a potential cause for the disappearance and following destruction of Malaysian Airlines Flight 370
Malaysia Airlines Flight 370 (MH370/MAS370) was an international passenger flight operated by Malaysia Airlines that disappeared on 8 March 2014 while flying from Kuala Lumpur International Airport in Malaysia to its planned destinatio ...
in 2014, with supporting evidence being found in a flight simulator
A flight simulator is a device that artificially re-creates aircraft flight and the environment in which it flies, for pilot training, design, or other purposes. It includes replicating the equations that govern how aircraft fly, how they rea ...
application used by the flight's pilot.
Disease
There have been documented cases of gay men
Gay men are male homosexuals. Some bisexual and homoromantic men may also dually identify as gay, and a number of young gay men also identify as queer. Historically, gay men have been referred to by a number of different terms, including ' ...
deliberately trying to contract a disease such as HIV/AIDS
Human immunodeficiency virus infection and acquired immunodeficiency syndrome (HIV/AIDS) is a spectrum of conditions caused by infection with the human immunodeficiency virus (HIV), a retrovirus. Following initial infection an individual ...
as a means of suicide.
Electrocution
Suicide by electrocution involves using a lethal electric shock
Electrical injury is a physiological reaction caused by electric current passing through the body. The injury depends on the density of the current, tissue resistance and duration of contact. Very small currents may be imperceptible or produce ...
, and is a rarely used method. This causes arrhythmias of the heart, meaning that the heart does not contract in synchrony between the different chambers, essentially causing elimination of blood flow. Furthermore, depending on the current
Currents, Current or The Current may refer to:
Science and technology
* Current (fluid), the flow of a liquid or a gas
** Air current, a flow of air
** Ocean current, a current in the ocean
*** Rip current, a kind of water current
** Current (stre ...
, burns may also occur. In his opinion outlawing the electric chair
An electric chair is a device used to execute an individual by electrocution. When used, the condemned person is strapped to a specially built wooden chair and electrocuted through electrodes fastened on the head and leg. This execution method, ...
as a method of execution, Justice of the Nebraska Supreme Court
The Nebraska Supreme Court is the highest court in the U.S. state of Nebraska. The court consists of a chief justice and six associate justices. Each justice is initially appointed by the governor of Nebraska; using the Missouri Plan, each just ...
stated that "electrocution inflicts intense pain and agonizing suffering", adding that it is "unnecessarily cruel in its purposeless infliction of physical violence and mutilation of the prisoner’s body."
Fire
Self-immolation
The term self-immolation broadly refers to acts of altruistic suicide, otherwise the giving up of one's body in an act of sacrifice. However, it most often refers specifically to autocremation, the act of sacrificing oneself by setting oneself o ...
is suicide usually by fire
Fire is the rapid oxidation of a material (the fuel) in the exothermic chemical process of combustion, releasing heat, light, and various reaction Product (chemistry), products.
At a certain point in the combustion reaction, called the ignition ...
. This method of suicide is rare due to its being long and painful. If the attempt is intervened, severe burns and scar tissue will prevail with subsequent emotional impact. It has been used as a protest tactic, by Thích Quảng Đức
Thích Quảng Đức (; vi-hantu, , 1897 – 11 June 1963; born Lâm Văn Túc) was a Vietnamese Mahayana Buddhist monk who burned himself to death at a busy Saigon road intersection on 11 June 1963. Quảng Đức was protesting the persec ...
in 1963 to protest the South Vietnam
South Vietnam, officially the Republic of Vietnam ( vi, Việt Nam Cộng hòa), was a state in Southeast Asia that existed from 1955 to 1975, the period when the southern portion of Vietnam was a member of the Western Bloc during part of th ...
's anti-Buddhist policies; by Malachi Ritscher
Malachi Ritscher (Mark David Ritscher; January 13, 1954 – November 3, 2006) was an American musician, recording engineer, human rights activist, and anti-war protester. He gained fame through his self-immolation, an act of protest against the 200 ...
in 2006 to protest the United States
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie ...
' involvement in the Iraq War
{{Infobox military conflict
, conflict = Iraq War {{Nobold, {{lang, ar, حرب العراق (Arabic) {{Nobold, {{lang, ku, شەڕی عێراق (Kurdish languages, Kurdish)
, partof = the Iraq conflict (2003–present), I ...
; by Mohamed Bouazizi
Tarek el-Tayeb Mohamed Bouazizi ( ar, طارق الطيب محمد البوعزيزي, Ṭāriq aṭ-Ṭayib Muḥammad al-Būʿazīzī; 29 March 1984 – 4 January 2011) was a street vendor who set himself on fire on 17 December 2010 in Sidi Bo ...
in 2011 in Tunisia
)
, image_map = Tunisia location (orthographic projection).svg
, map_caption = Location of Tunisia in northern Africa
, image_map2 =
, capital = Tunis
, largest_city = capital
, ...
which gave rise to the Tunisian Revolution
The Tunisian Revolution, also called the Jasmine Revolution, was an intensive 28-day campaign of civil resistance. It included a series of street demonstrations which took place in Tunisia, and led to the ousting of longtime president Zine El ...
; and historically as a ritual known as sati
Sati or SATI may refer to:
Entertainment
* ''Sati'' (film), a 1989 Bengali film by Aparna Sen and starring Shabana Azmi
* ''Sati'' (novel), a 1990 novel by Christopher Pike
*Sati (singer) (born 1976), Lithuanian singer
*Sati, a character in ''Th ...
where a Hindu
Hindus (; ) are people who religiously adhere to Hinduism.Jeffery D. Long (2007), A Vision for Hinduism, IB Tauris, , pages 35–37 Historically, the term has also been used as a geographical, cultural, and later religious identifier for ...
widow would immolate herself in her husband's funeral pyre
A pyre ( grc, πυρά; ''pyrá'', from , ''pyr'', "fire"), also known as a funeral pyre, is a structure, usually made of wood, for burning a body as part of a funeral rite or execution. As a form of cremation, a body is placed upon or under the ...
.
Hypothermia
Hypothermia is an extremely rare method of suicide. As of 2015, there have been only nine cases in the scientific literature.
Assisted suicide
Indirect
Indirect suicide is the act of setting out on an obviously fatal course without directly carrying out the act upon oneself. Indirect suicide is differentiated from legally defined suicide by the fact that the person does not directly cause the action meant to kill them, but rather expects and allows the action to happen to them. Examples of indirect suicide include a soldier enlisting in the army
An army (from Old French ''armee'', itself derived from the Latin verb ''armāre'', meaning "to arm", and related to the Latin noun ''arma'', meaning "arms" or "weapons"), ground force or land force is a fighting force that fights primarily on ...
with the intention and expectation of being killed in combat, or provoking an armed law enforcement officer into using lethal force against them. The latter is generally called "suicide by cop
Suicide by cop or suicide by police is a suicide method in which a suicidal individual deliberately behaves in a threatening manner, with intent to provoke a lethal response from a public safety or law enforcement officer.
Overview
There are ...
".
Evidence exists for suicide by capital crime
Capital punishment, also known as the death penalty, is the state-sanctioned practice of deliberately killing a person as a punishment for an actual or supposed crime, usually following an authorized, rule-governed process to conclude that t ...
in colonial Australia
The history of Australia is the story of the land and peoples of the continent of Australia.
People first arrived on the Australian mainland by sea from Maritime Southeast Asia between 50,000 and 65,000 years ago, and penetrated to all part ...
. Convicts seeking to escape their brutal treatment would murder another individual. This was felt necessary due to a religious taboo against direct suicide. A person completing suicide was believed to be destined for hell
In religion and folklore, hell is a location in the afterlife in which evil souls are subjected to punitive suffering, most often through torture, as eternal punishment after death. Religions with a linear divine history often depict hell ...
, whereas a person committing murder could be absolved of their sins before execution. In its most extreme form, groups of prisoners on the extremely brutal penal colony of Norfolk Island
Norfolk Island (, ; Norfuk: ''Norf'k Ailen'') is an external territory of Australia located in the Pacific Ocean between New Zealand and New Caledonia, directly east of Australia's Evans Head and about from Lord Howe Island. Together with ...
would form suicide lotteries. Prisoners would draw straws with one prisoner murdering another. The remaining participants would witness the crime, and would be sent away to Sydney, as capital trials could not be held on Norfolk Island, thus earning a break from the Island. There is uncertainty as to the extent of suicide lotteries. While surviving contemporary accounts claim that the practice was common, such claims are probably exaggerated.
Rituals
See also
* Advocacy of suicide
Advocacy of suicide, also known as pro-suicide, has occurred in many cultures and subcultures. Confucianism holds that one should give up one's life, if necessary, either passively or actively, for the sake of upholding the cardinal moral values ...
* List of suicides
The following people died by suicide. This includes suicides effected under duress and excludes deaths by accident or misadventure. People who might or might not have died by their own hand, or whose intention to die is in dispute, but who a ...
from antiquity to the present
* List of suicides in the 21st century
The following are notable peoples who died by suicide in the year 2001 and after. Suicides under duress are included. Deaths by accident or misadventure are excluded. Individuals who might or might not have died by their own hand, or whose i ...
* Sarco device
The Sarco pod (also known as Pegasos and has been referred to as a "suicide pod") is a euthanasia device or machine consisting of a 3D-printed detachable capsule mounted on a stand that contains a canister of liquid nitrogen to die by suicide ...
* Suicide legislation
Suicide is a crime in some parts of the world. However, while suicide has been decriminalized in many western countries, the act is stigmatized and discouraged. In other contexts, suicide could be utilized as an extreme expression of liberty, a ...
References
Further reading
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{{DEFAULTSORT:Suicide Methods
Suicide
Suicide is the act of intentionally causing one's own death. Mental disorders (including depression, bipolar disorder, schizophrenia, personality disorders, anxiety disorders), physical disorders (such as chronic fatigue syndrome), and s ...
Suicide