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A Major New Review Found No RCT Evidence Cannabis Works for PTSD. Thirty-Eight States Still List It as a Qualifying Condition.

The largest RCT-based review of cannabis and mental health found no evidence it treats PTSD, anxiety, or depression — the three leading reasons states authorize it as medicine. Thirty-eight states haven’t updated their qualifying condition lists. That gap is the story.

Ethan Vale · April 1, 2026 · 6 min read