In a study of adults who experienced psychosis for the first time, having smoked marijuana daily was linked to an earlier age of onset of the disorder, according to UK researchers.
"This is not a study about the association between cannabis and psychosis, but about the association between specific patterns of cannabis use . . . and an earlier onset of psychotic disorders," Dr. Marta Di Forti, who led the research at the Institute of Psychiatry at Kings College, said in an email.
Among more than 400 people in South London admitted to hospitals with a diagnosed psychotic episode, the study team found the heaviest smokers of high-potency cannabis averaged about six years younger than patients who had not been smoking pot....
