Study Spotlight #20: Cannabis Use Does Not Increase the Risk of Developing Psychosis
Bucking some earlier research trends suggesting that the use of cannabis leads to an increased risk of developing psychotic events, this new trial utilizes data from 334 at clinically high risk of psychosis and 67 healthy controls. Researchers tracked the persistence of psychotic symptoms and the transition to psychosis for two years. The resulting data revealed, “…no significant association between any measure of cannabis use at baseline and either transition to psychosis, the persistence of symptoms, or functional outcome.”
Chester LA, Valmaggia LR, Kempton MJ, Chesney E, Oliver D, Hedges EP, Klatsa E, Stahl D, van der Gaag M, de Haan L, Nelson B, McGorry P, Amminger GP, Riecher-Rössler A, Studerus E, Bressan R, Barrantes-Vidal N, Krebs MO, Glenthøj B, Nordentoft M, Ruhrmann S, Sachs G, McGuire P; EU-GEI High Risk Study Group. Influence of cannabis use on incidence of psychosis in people at clinical high risk. Psychiatry Clin Neurosci. 2023 Apr 18.