Adolescents who use cannabis could face a significantly higher risk of developing serious psychiatric disorders by young adulthood, according to a large study published in JAMA Health Forum. The ...

An increasingly strong link between rising cannabis use and worsening mental-health symptoms has been found by researchers at McMaster University. “We see that Canadians who use cannabis tend to be ...

Teen use of marijuana has jumped significantly in recent decades - by 245% since 2000, with over 30% of U.S. high school ...

A major new study reveals that cannabis use and mental health disorders like anxiety and depression are increasingly linked, with frequent users facing a 5x higher risk.

Dr. Smita Das often hears the same myth: You can’t get hooked on pot. And the misconception has become more widespread as a growing number of states legalize marijuana. Around half now allow ...

Cannabis use and mental health problems are rising together in Canada, with stronger links to anxiety, depression, and suicidality.

An analysis of 35,000 Canadians shows that rising cannabis use and worsening mental‑health symptoms are increasingly appearing together, with the connection between the two strengthening over time.

People with cannabis use disorder show signs of altered dopamine activity in the brain that mirror patterns seen in psychosis, according to a new brain imaging study published in JAMA Psychiatry.

Another study found that people who smoked weed regularly as teenagers experienced accelerated thinning of the prefrontal cortex in the brain, which made their behaviour more impulsive. The simulation ...