Background Cannabis use is associated with increased risk of later psychotic disorder but
whether it affects incidence of the disorder remains unclear. We aimed to identify patterns of …

Background The risk of individuals having adverse effects from drug use (eg, alcohol)
generally depends on the frequency of use and potency of the drug used. We aimed to …

BackgroundWorldwide, cannabis is the most used illegal substance, and the use of
cannabis has increased over the years. An increase in the level of tetrahydrocannabinol …

Over the past five years, the release of cohort studies assessing the link between cannabis
and psychosis has increased attention on this relationship. Existing reviews generally …

BackgroundThere is now strong evidence that cannabis use increases the risk of psychoses
including schizophrenia, but the relationship between cannabis and different psychotic …

Cannabis use may increase the risk of psychotic disorders and result in a poor prognosis for
those with an established vulnerability to psychosis. A 3-year follow-up (1997–1999) is …

Purpose The objectives of this review were to understand the prevalence of cannabis use
and how cannabis is associated with transition to psychosis, symptoms, cognition, trauma …

We briefly review the evidence that cannabis use in adolescence and young adulthood is a
contributory cause of schizophreniform psychoses, by summarising longitudinal studies that …

Background While there is increasing evidence on the association between cannabis use
and psychotic outcomes, it is still unclear whether this also applies to depression. We aim to …

BackgroundDaily use of high-potency cannabis has been reported to carry a high risk for
developing a psychotic disorder. However, the evidence is mixed on whether any pattern of …