03/11/2026
A major new longitudinal study published in JAMA Health Forum followed more than 463,000 adolescents and found that cannabis use was associated with double the risk of developing psychotic and bipolar disorders, as well as increased risk for depression and anxiety. Notably, cannabis use preceded psychiatric diagnoses by nearly two years on average—and the elevated risk remained even after accounting for prior mental health conditions.
This is critical information for parents, educators, and young people. Awareness matters. Prevention matters.
Read the full study here:
https://jamanetwork.com/journals/jama-health-forum/fullarticle/2845356