Two new studies led by Ottawa researcher Dr. Daniel Myran link higher rates of death as well as “concerning increases” in new schizophrenia diagnoses to cannabis use disorder.
One study found that cases of schizophrenia associated with cannabis use disorder almost tripled in Ontario between 2006 and 2022, a period in which people seeking hospital treatment for cannabis use disorder increased by 270 per cent. The second study found that people who had been treated at hospitals for cannabis use disorder were at a significantly higher risk of death compared to the general population.
