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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 problem that can have long-lasting effects on individuals, families, and communities. Preventing suicide requires strategies at all levels of society. This includes prevention and protective strategies for individuals, families, and communities. Suicide can be prevented by learning the warning signs, promoting prevention and resilience, and committing to social change. Beyond direct interventions to stop an impending suicide, methods may include: 
  - treating mental illness
  - improving coping strategies of people who are at risk
  - reducing risk factors for suicide, such as substance misuse, poverty and social vulnerability
  - giving people hope for a better life after current problems are resolved
  - calling a suicide hotline number General efforts include measures within the realms of medicine, mental health, and public health. Because protective factors such as social support and social engagement—as well as environmental risk factors such as access to lethal means— play a role in suicide, suicide is not solely a medical or mental-health issue.