Development Over Time of the Population-Attributable Risk Fraction for Cannabis Use Disorder in Schizophrenia in Denmark

This study, based in Denmark, examines data from 1972 through 2016 and found direct associations between cannabis use disorder (CUD) and schizophrenia. The authors found the proportion of cases of schizophrenia associated with CUD increased 3- to 4-fold during the prior two decades, supporting a causal association between CUD and schizophrenia.

by Carsten Hjorthøj, PhD; Christine Merrild Posselt, MSc; Merete Nordentoft, DrMedSc

Read the full study at JAMA Network.