A recent study published in JAMA Network Open examines the relationship between cannabis use disorder (CUD) and mental health outcomes, particularly psychosis and schizophrenia, in Canada before and after the legalization of cannabis. The study found a significant increase in CUD, with a notable rise in psychosis cases, although the overall incidence of schizophrenia remained stable. Schizophrenia incidence increased in younger men after 2015. The study suggests that the rising prevalence of high-potency cannabis products may be contributing to this increase. These findings highlight the need for public policy to address the mental health risks associated with cannabis use, especially in the context of rapidly expanding commercial markets.