High Risk or Risky Highs: Understanding the Links Between Alcohol and Cannabis Use on the Transition From Suicidal Ideation to Attempts in Australian Men.

Alcohol and cannabis use are consistently associated with greater risk of suicide, particularly among men and in higher-income countries (e.g., Australia). Adult data (n = 7,464) from waves 1 and 2 of Ten to Men: The Australian Longitudinal Study on Male Health were used to explore whether alcohol and/or cannabis use increased the longitudinal risk of a suicide attempt among suicidal ideators. Cannabis use was associated with increased risk of transitioning from suicidal ideation to making a suicide attempt; no association was found for alcohol. Broadly, these findings indicate that greater cannabis but not alcohol use may increase risk of transitioning to making a suicide attempt among those who are thinking about suicide.