This investigation provides further support, in a population-based sample of young adults, of the association between childhood trauma and mood disorders, with sexual abuse being specifically linked with bipolar disorder. The hypothesis that childhood trauma would function as a partial mediator of the association between family history of mood disorder and mood disorder in adulthood was also confirmed.

The aim of this study was to assess suicide risk and risk behavior in young people. A cross-sectional study in the urban area of Pelotas, Rio Grande do Sul State, Brazil was performed using systematic sampling with young people between the ages of 18 to 24 years. We measured the risk of suicide (MINI), behavior (YRBSS), abuse/substance dependence (ASSIST) and socioeconomic status (ABEP). Data was analyzed using SPSS software. The sample consisted of 1,560 young people and the prevalence of suicide risk was 8.6%. Suicide risk was associated with: having suffered an accident that required a visit to the emergency room (p = 0.011), fighting (p = 0.016), carrying a weapon (p = 0.001) and carrying a firearm (p ≤ 0.001), substance abuse/dependence (p ≤ 0.001), not having used a condom during the last sexual relationship (p = 0.025), not having a steady partner (p ≤ 0.001) and having sex with five or more people (p = 0.018). Young people that present risk behavior also represent a suicide risk.

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