Rationale: Converging evidence suggests that cannabis use can induce psychosis and is a distinct risk factor for schizophrenia. Taken together with the effects of Tetrahydrocannabinol (THC) on neural systems, dopamine and endocannabinoids it is likely that cannabis use may also produce sub- clinical psychosis-linked changes in a much larger number of regular recreational users; observable in...
Although cannabis abuse (CA) is known to be associated with schizophrenia, the causal nature of this association is unclear, with prodromal effects complicating its interpretation. From Swedish national registry databases, we used a co-relative case-control design with full-sibling, half-sibling and first-cousin comparisons, alongside a general Swedish population sample. Using ICD codes, 5456...
Two studies informed by the terror management health model were conducted to examine the question of how death cognition affects cannabis craving and whether actual cannabis smoking alleviates death cognitions. The first study examined whether priming thoughts of death are associated with subjective cannabis craving among 42 frequent cannabis users randomly assigned to either a mortality...
Hallucinogen persisting perception disorder is a disorder of uncertain aetiology occurring mainly after ‘classical’ hallucinogen use ( ie mescaline, psilocybin, dimethyltryptamine and LSD) use. Here, the authors describe the case of a boy with similar symptoms developing after he reported using cannabis seven times.