Cannabis of little benefit for mental disorders: researchReutersCannabis-based medicines have shown little evidence of effectiveness for treating most mental health and substance-use disorders, according to a large review of past studies published in a major medical journal on Monday. Photo: ReutersThe studies assessed cannabinoids as a primary treatment for mental disorders or substance-use disorders. Overall, the review found no significant benefit for several conditions commonly cited as reasons for medical cannabis use, including anxiety disorders, psychotic disorders, post-traumatic stress disorder and opioid-use disorder. The study authors found no randomized controlled trials evaluating cannabinoids for depression, highlighting a major gap in the evidence base, they said. “We clearly need to do more research on medical cannabis, particularly for those conditions that have limited alternative treatments,” Wilson said.

Source: Taipei Times March 18, 2026 03:48 UTC