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

Authors: Louise Arseneault, Mary Cannon, Richie Poulton, Robin Murray, Avshalom Caspi, Terrie E Moffitt
BMJ, 23 November 2002

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…

Cardiovascular system effects of marijuana.

Authors: Reese T. Jones
The Journal of Clinical Pharmacology, November 2002

Marijuana and delta9-tetrahydrocannabinol (THC) increase heart rate, slightly increase supine blood pressure, and on occasion produce marked orthostatic hypotension. Cardiovascular effects in animals are different, with bradycardia and hypotension the most typical response. Ca…