Many young people have the impression that marijuana is a safe and natural drug, but a new study links early use to an increased likelihood of serious mental health problems. (Justin Sullivan | Getty ...

Symptom education for early intervention, and the benefits of a team approach with peer support. The importance of education about symptoms and early intervention to reduce the duration of untreated ...

A large cohort study tracking more than 463,000 U.S. teenagers has found that those who reported cannabis use faced a significantly elevated risk of developing psychotic disorders, including ...

As marijuana use among teens has grown in the past decade, researchers have been trying to better understand the health risks of the drug. Now, a new longitudinal study finds that cannabis use among ...

Researchers followed more than 400,000 teens until they were adults. It found that those who used marijuana were more likely to develop serious... A huge study finds a link between cannabis use in ...