MAPS (multidisciplinary association of psychedelic studies) is systematically demonstrating the positive effects of psychedelics.
Their most impressive work is in PTSD. In Phase 2 trials, they took people with established PTSD (for years) and undertook ~3 guided psychotherapy sessions with MDMA. Within 2 months, 53% no longer met criteria for PTSD and at 12 months 68% didn't.
Far more efficacious that anything else we have. Powerful tool for psychologic healing.