The environment and schizophrenia: the role of cannabis use.

  title={The environment and schizophrenia: the role of cannabis use.},
  author={C{\'e}cile Henquet and Robin Murray and Don H. Linszen and Jim van Os},
  journal={Schizophrenia bulletin},
  volume={31 3},
Cannabis use is associated with poor outcome in existing schizophrenia and may precipitate psychosis in individuals with preexisting liability. To investigate the overall effect size and consistency of the association between cannabis and psychosis, a meta-analysis from prospective studies was carried out. The pooled odds ratio was 2.1 (95% CI: 1.7-2.5) and could not be explained by confounding or reverse causality. Evidence suggests that cannabis is a component cause in the development and… CONTINUE READING
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