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 a psychiatrist and addiction medicine physician, I am surprised that some patients and their families still believe marijuana is a benign and innocuous substance. Over the past several years, I ...

New research from the Institute of Psychiatry, Psychology & Neuroscience (IoPPN) at King's College London, in partnership with the University of Bath, has found that the reasons why a person chooses ...

High-concentration THC products are linked to unfavourable mental health outcomes like psychosis, schizophrenia, and cannabis use disorder (CUD), found a new systematic review published in the Annals ...

“Cannabis from the 2000s is not the same as in 2025,” said coauthor Dr. Nicholas Fabiano, MD, resident and researcher with the Department of Psychiatry, University of Ottawa, Ottawa, Ontario. “THC ...

People with cannabis use disorder had more than triple the odds of developing oral cancer, a large five-year study found, raising red flags about the carcinogenic risks of heavy cannabis use, ...

A large systematic review indicated a strong link between high concentration delta-9-THC and psychosis or schizophrenia. High concentration THC was also strongly associated with cannabis use disorder.