Marijuana for Mental Health: Why Experts Urge Caution Despite Popular Use

Marijuana is increasingly used for mental health concerns, despite limited evidence of its benefits. A recent review found that nearly one in four people in the US and Canada have tried it for medical reasons—half of them to manage conditions like anxiety or depression. Yet experts warn that the risks often outweigh any proven advantages.

Studies show no clear proof that marijuana effectively treats anxiety, depression, or PTSD. The same applies to more severe conditions, including anorexia nervosa, bipolar disorder, OCD, and schizophrenia. While some turn to cannabis for relief, established treatments like SSRIs and cognitive behavioural therapy remain the most reliable options.

High-potency marijuana, now containing up to 35% THC, poses greater dangers. Regular use raises the risk of addiction, with nearly 30% of US users developing cannabis use disorder. Vulnerable groups—such as pregnant women, teenagers, and those with mood disorders or a family history of mental illness—face even higher risks.

Despite its growing popularity, no US state officially approves medical marijuana specifically for mental health treatment. The lack of regulation leaves users without clear guidance on safety or effectiveness.

The gap between public use and scientific backing remains wide. While many try marijuana for mental health, research does not support its effectiveness for most conditions. For now, proven therapies and medications continue to offer the safest and most dependable support.