People gather at Yonge-Dundas Square in Toronto to celebrate 4/20, on April 20, 2023.
At the five-year mark after legalization of cannabis, a look at what research tells us about the upsides and downsides for public health.Cannabis is now widely available since being legalized in October 2018.
The study's authors combed through hospitalization data on nearly seven million people aged 15 and up in Ontario, Quebec, Alberta and British Columbia. Their findings were published Thursday in The study focused on three time periods: pre-legalization ; post-legalization with product and store restrictions ; and post-legalization with commercialization, resulting in more stores and product access . The latter period overlapped with the COVID-19 pandemic.
From his work in public health and as a researcher, Myran said people, mostly young men, commonly show up in emergency departments after using cannabis because they're experiencing withdrawal or are intoxicated but not displaying cannabis-related psychosis. Myran said they are at risk — slight but there — of developing a serious mental disorder.
The increasing potency of cannabis sold after commercialization matters, said Romina Mizrahi, a psychiatrist and professor at McGill University in Montreal. She wasn't involved in the research.
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