Cannabis Use Linked to More Severe Schizophrenia

Cannabis use not only increases the risk for schizophrenia but new research suggests it is associated with more severe schizophrenic psychosis.

A large, longitudinal cohort study shows that schizophrenia patients with a history of cannabis use had longer hospital stays, a higher rate of hospital readmission, and a type of schizophrenia “that may be more severe than schizophrenia cases in general,” according to study investigator Peter Allebeck, MD, PhD, professor of social medicine in the Department of Public Health Sciences at the Karolinska Institute in Stockholm, Sweden.

by Daniel M. Keller, PhD

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