A suicide method is any means by which one or more persons purposely kills themselves. Examples of methods that have been used to commit suicide are listed below. Though individuals with suicidal feelings may consider these methods, most eventually do not act on them.

Suicide methods can be classified according to two modes of interrupting life processes: physical or chemical. Physical modes of interruption typically act by incapacitating the respiratory system or the central nervous system, usually by destruction of one or more key components. Chemical modes focus on interrupting biologically significant processes such as cellular respiration or diffusion capacity.

Chemical methods of suicide produce latent evidence of action, while physical methods provide direct evidence. According to the center for suicide research at Oxford University, "[a]ll research suggests that showing, in detail, methods of suicide does result in an increase of those methods immediately afterwards, so portrayal of methods of suicide is ill-advised." According to Mr Mike Cobb, of The Samaritans, an organisation which works with people contemplating suicide, "[e]ven showing a method on Casualty has led to an increase." Suicide by exsanguination involves reducing the volume and pressure of the blood to below critical levels by inducing massive blood loss. It is usually the result of damage inflicted on arteries.

The carotid, radial, ulnar or femoral arteries may be targeted. Death may occur directly as a result of the desanguination of the body or via hypovolemia, wherein the blood volume in the circulatory system becomes too low and results in the body shutting down.

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