A new study is the first to show that insomnia symptoms mediate the relationship between alcohol use and suicide risk, and that this mediation is moderated by gender. The study suggests that the targeted assessment and treatment of specific sleep problems may reduce the risk of suicide among those who use alcohol.

The study found that alcohol use was significantly associated with suicide risk among women. However, further analysis revealed that insomnia symptoms explained a significant proportion of the relationship between alcohol and suicide risk. For men, there was no direct effect of alcohol use on suicide risk, but there was a significant indirect effect of alcohol use increasing suicide risk through insomnia symptoms.

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