Teenage cannabis smokers face bigger risk of full-blown mental illness - Daily Mail 1st June 2008

Teenage cannabis users are more likely to suffer psychotic symptoms that raise the risk of full-blown mental illness in later life, claim researchers. Adolescent drug takers interviewed for the largest study of its kind reported experiencing at least three symptoms indicating a risk of psychosis. These included feeling like something strange or inexplicable was taking place, suspecting they were being influenced or followed and difficulty in controlling the speed of thoughts.

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