
Heavy weed use may be far more dangerous than people realize, according to a pair of studies published in JAMA Network Open. People diagnosed with cannabis use disorder (CUD) may face nearly triple the risk of death over five years compared to those without the disorder, according to a large study published Feb. 6. The study, conducted in Ontario, Canada, found that people treated for CUD in hospitals or emergency rooms were 10 times more likely to die by suicide than those in the general population. They were also significantly more likely to die from trauma, drug poisoning and lung cancer, researchers found. A separate study — published Feb. 4 — linked rising cases of psychosis and schizophrenia in Canada to CUD since the country legalized recreational marijuana in 2018. Researchers suspect C.U.D. is even more widespread than the data indicate. When they analyzed Ontario health records from 106,994 people diagnosed with CUD during a hospital or emergency room visit between 2006 and 2021, researchers found: 3.5% of people with CUD died within five years of treatment, compared to 0.6% of a similar group of people without CUD. CUD patients still had a 2.8 times higher risk of death than the general population even after other risk factors like mental illness, heart disease, cancer and other substance use were considered. Young adults aged 25 to… read on > read on >