Systematic Review Finds No Evidence Medical Cannabis Eases Anxiety, Depression or PTSD A comprehensive scientific review has found no evidence that medical cannabis alleviates symptoms of anxiety, depression, or post-traumatic stress disorder. The study, conducted by researchers from the University of Sydney and published in March 2026, is described as the largest-ever review of its kind [1]. According to the published findings, there was ‘no evidence’ that cannabis is an effective or safe treatment for those common mental health conditions [2]. Researchers undertook an analysis of all available randomized controlled trial evidence, examining studies conducted from 1980 through 2025. The lead…

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