Building on his last video, Reframing the Description of Cannabis, John J. Miller, MD, talks about the growing literature on cannabis. Studies point to potential increased risk of psychosis and lower IQs for those who heavily use cannabis with high THC.

Dr Miller is Medical Director, Brain Health, Exeter, NH; Editor in Chief, Psychiatric Times; Staff Psychiatrist, Seacoast Mental Health Center, Exeter, NH; Consulting Psychiatrist, Exeter Hospital, Exeter, NH; Consulting Psychiatrist, Insight Meditation Society, Barre, MA.