Huge study finds no evidence cannabis helps anxiety, depression, or PTSD

Why it matters: This study challenges widespread beliefs about cannabis for mental health, urging stricter oversight and informed treatment choices.
- The University of Sydney conducted the largest review to date on medicinal cannabis, finding no significant benefit for anxiety, depression, or PTSD.
- Dr. Jack Wilson, lead author, cautions that routine medicinal cannabis use could exacerbate mental health issues, including a higher risk of psychotic symptoms and cannabis use disorder.
- The study found weak evidence for potential benefits in conditions like insomnia, autism, and tics, but emphasizes the overall low quality of this evidence and the need for robust medical support.
A groundbreaking study from the University of Sydney, published in The Lancet, reveals that medicinal cannabis shows no evidence of effectively treating anxiety, depression, or PTSD, despite widespread use for these conditions. Researchers warn that it could even worsen mental health, increasing risks of psychosis and addiction while delaying proven treatments, though limited, weak evidence suggests some potential benefits for insomnia, autism, and Tourette's.


