Daily, high‐potency cannabis linked to first psychosis
Alcoholism & Drug Abuse Weekly April 8, 2019 DOI: 10.1002/adaw.32321 (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 over three times the risk of psychotic disorder versus never use, rising to nearly five times with high-potency cannabis. The authors estimate that removing high-potency cannabis could prevent 12.2 percent of first-episode psychosis cases across 11 sites, 30.3 percent in London, and 50.3 percent 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 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 percent of cases of first‐episode psychosis could be prevented, rising to 30.3 percent in London and 50.3 percent in Amsterdam.