Kids who smoke marijuana could be increasing their risk of mental illness. A new study shows marijuana use might speed up the onset of psychosis in people predisposed to diseases like schizophrenia.
The Australian study says the drug could even cause psychosis in those not predisposed. Researchers analyzed data from thousands of mentally ill patients. They found that those who smoked marijuana developed symptoms of psychosis about three years before non-users. Psychotic illnesses like schizophrenia usually don’t show up until young adulthood. Experts note that the study does not take into account marijuana-use as self-medication among people experiencing symptoms of psychosis. The study appears in its entirety in “Archives of General Psychiatry.”