Convergence of Cannabis and Psychosis on the Dopamine System JAMA Psychiatry April 9, 2025 Jessica Ahrens, Sabrina D. Ford, Betsy Schaefer et al. This cohort study investigates the association between cannabis and the midbrain dopamine pathway involved in psychosis. DOI: 10.1001/jamapsychiatry.2025.0432 (opens in new tab)