Mental disorders as risk factors for suicidal behavior in young people: a meta-analysis and systematic review of longitudinal studies

•This is the first systematic review and meta-analysis based on longitudinal studies analysing mental disorders and psychiatric comorbidity on suicidal behaviour among young people.•Mental disorders increase the risk for suicide attempts in young people.•In particular affective disorders predicted suicide attempts in young people.•Mental disorders and comorbidity are strong predictors of suicide behavior.