Daily, high‐potency cannabis use linked to first‐episode psychosis
The Brown University Child & Adolescent Psychopharmacology Update May 1, 2019 DOI: 10.1002/cpu.30393 (opens in new tab)
Study at a glance
AI-extracted from the abstract| Characteristics | News report Peer reviewed |
|---|---|
| Topics | Cannabis |
| Key points | Daily cannabis use is associated with more than three times the risk of psychotic disorder compared with never use, rising to nearly five times with high-potency cannabis. The authors estimate that removing high-potency cannabis could prevent 12.2% of first-episode psychosis cases overall, 30.3% in London, and 50.3% in Amsterdam. |
Abstract
Daily use of marijuana (cannabis) is associated with a greater than three times increased risk of psychotic disorder compared to never users, according to a study published in the March 19 issue of Lancet Psychiatry. This risk increased to nearly five times if high‐potency cannabis was used. Across the 11 sites included in the study, if high‐potency cannabis were not available, 12.2% of cases of first‐episode psychosis could be prevented, rising to 30.3% in London and 50.3% in Amsterdam.