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Objective: Death by suicide is widely held as an undesirable outcome. Most Western countries place emphasis on patient autonomy, a concept of controversy in relation to suicide. This paper explores the tensions between patients' rights and many societies' overarching desire to prevent suicide, while clarifying the relations between mental disorders, mental capacity, and rational suicide. Method: A literature search was conducted using search terms of suicide and ethics in the PubMed and LexisNexis Academic databases. Article titles and abstracts were reviewed and deemed relevant if the paper addressed topics of rational suicide, patient autonomy or rights, or responsibility for life. Further articles were found from reference lists and by suggestion from preliminary reviewers of this paper. Results: Suicidal behaviour in a person cannot be reliably predicted, yet various associations and organizations have developed standards of care for managing patients exhibiting suicidal behaviour. The responsibility for preventing suicide tends to be placed on the treating clinician. In cases where a person is capable of making treatment decisions-uninfluenced by any mental disorder-there is growing interest in the concept of rational suicide. Conclusions: There is much debate about whether suicide can ever be rational. Designating suicide as an undesirable event that should never occur raises the debate of who is responsible for one's life and runs the risk of erroneously attributing blame for suicide. While upholding patient rights of autonomy in psychiatric care is laudable, cases of suicidality warrant a delicate consideration of clinical judgment, duty of care, and legal obligations. [ABSTRACT FROM AUTHOR]