Links are in the NDS pdf. Some are very interesting.Do you have any data on hand for this? Links?
I'm sure that is in part true. It's a very difficult area to study for many reasons, but there have been maybe, 50 plus studies, and most show a increase incidence of psychosis later in life in people who have used dope as an adolescent or young adult. Having worked in the area I have absolutely no doubt dope and other drugs can precipitate a psychotic episode in someone who is known to have schizophrenia."The evidence of a cross-sectional association between cannabis use and psychosis is not enough to be able to conclude that cannabis causes psychosis. First of all, evidence of association does not provide information about the temporal relationship of the cannabis psychosis relationship. It remains possible that experiencing psychosis could make it more likely that people go on to use cannabis"