Causal association between cannabis and psychosis: examination of the evidence
The British Journal of Psychiatry January 30, 2004 Louise Arseneault, Mary Cannon, John Witton et al. 924 citations
BACKGROUND: Controversy remains as to whether cannabis acts as a causal risk factor for schizophrenia or other functional psychotic illnesses. AIMS: To examine critically the evidence that cannabis causes psychosis using established criteria of causality. METHOD: We identified five studies that included a well-defined sample drawn from population-based registers or cohorts and used prospective...