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Rates and Predictors of Conversion to Schizophrenia or Bipolar Disorder Following Substance-Induced Psychosis.

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Authors: Marie Stefanie Kejser Starzer, Merete Nordentoft, Carsten Hjorthøj
American Journal of Psychiatry, April 2018
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OBJECTIVE: The authors investigated the rates of conversion to schizophrenia and bipolar disorder after a substance-induced psychosis, as well as risk factors for conversion. METHOD: All patient information was extracted from the Danish Civil Registration System and the Psychi…

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Cannabis use in adolescence and risk for adult psychosis: longitudinal prospective study.

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Authors: Louise Arseneault, Mary Cannon, Richie Poulton, Robin Murray, Avshalom Caspi, Terrie E Moffitt
BMJ, 23 November 2002
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The strongest evidence that cannabis use may be a risk factor for later psychosis comes from a Swedish cohort study which found that heavy cannabis use at age 18 increased the risk of later schizophrenia sixfold. This study could not establish whether adolescent cannabis use w…

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