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Related Experiment Video

Updated: May 5, 2026

The Motivation for Alcohol Reward: Predictors of Progressive-Ratio Intravenous Alcohol Self-Administration in Humans
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Acute Alcohol Use and Suicide.

Minkyung Yim1, Hayoung Kim1, Gyumyoung Kim1

  • 1School of Psychology, Korea University, Seoul, Republic of Korea.

JAMA Network Open
|February 24, 2025
PubMed
Summary

Acute alcohol use (AAU) significantly increases suicide risk, particularly with gas poisoning. Alcohol consumption was linked to specific suicide methods and demographics, especially in older adults.

Area of Science:

  • Public Health
  • Psychiatry
  • Toxicology

Background:

  • Acute alcohol use (AAU) is a known risk factor for suicide.
  • The specific mechanisms linking AAU to suicide, especially method choice, remain understudied.

Purpose of the Study:

  • To investigate the association between AAU and suicide risk factors.
  • To examine how AAU relates to the selection of suicide methods.

Main Methods:

  • Utilized data from the Korean National Investigations of Suicide Victims Study (KNIGHTS), a nationally representative dataset.
  • Conducted psychological autopsies on over 55,000 suicide decedents to determine alcohol consumption.
  • Employed hierarchical logistic regression to analyze associations between demographic, psychiatric, and suicide characteristics and AAU.

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Main Results:

  • Nearly 40% of suicide decedents had consumed alcohol, with AAU associated with male sex, middle age, and alcohol use disorder symptoms.
  • Gas, drug, and pesticide poisoning were positively associated with AAU, with gas poisoning showing the highest odds.
  • Older adults (≥80 years) showed increased odds of AAU when using poisoning methods, indicating an interaction between age and method.

Conclusions:

  • AAU is significantly associated with specific suicide methods, notably gas poisoning, suggesting potential facilitation of planned attempts.
  • The findings underscore the critical need for monitoring and managing alcohol use, particularly in older adults, to mitigate suicide risk.