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A huge study finds a link between cannabis use in teens and psychosis later

Researchers followed more than 400,000 teens until they were adults. It found that those who used marijuana were more likely to develop serious mental illness, as well as depression and anxiety.

Copyright 2026 NPR

Rhitu Chatterjee is a health correspondent with NPR, with a focus on mental health. In addition to writing about the latest developments in psychology and psychiatry, she reports on the prevalence of different mental illnesses and new developments in treatments.