After states passed laws legalizing recreational cannabis, past-month use among people with psychosis increased by nearly 10 percentage points. People with psychotic disorders who use cannabis ...

Recent birth cohorts showed a higher prevalence and earlier onset of psychotic disorders, potentially linked to increased cannabis and substance use.

Science is at odds with the ‘medical use’ of cannabis: does it help with mental health, or is there something else at play?

Marijuana is illegal in North Carolina. Hemp, which also comes from cannabis, is legal.

Cannabis products containing high concentrations of delta-9-tetrahydrocannabinol (THC) -- the main psychoactive compound in marijuana -- were linked to psychosis, schizophrenia, and addiction, a ...

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 ...

As of 2019, the use of marijuana is fully legal in 10 states and the District of Columbia; criminal penalties for marijuana possession have been reduced in another 12 states. The movement to legalize ...

Weed use is taking off as more states move to legalize it. And with all the buzz over medical marijuana, it's starting to gain an aura of healthfulness. But there are some serious health risks ...

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 ...