
Emergency room visits for injuries related to driving under the influence of cannabis skyrocketed in Canada after the drug was legalized there, a new study reports. In October 2018, Canada became the second country to nationally legalize recreational or nonmedical cannabis for adult use. While known cannabis-involved emergency department (ED) visits for traffic injuries were still rare, they grew by 475% over 13 years, with a sharper rise in accidents after legalization, the researchers found. “Our findings highlight a concerning increase in cannabis-involvement in traffic-injury emergency visits over time, with even sharper spikes following the phases of legalization and commercialization,” said lead author Dr. Daniel Myran, a post-doctoral trainee at the Institute for Clinical Evaluative Sciences (ICES) and a family physician at the Ottawa Hospital. “Conversely, alcohol-involvement in traffic injury ED visits did not increase over the study period, which suggests that legalization of cannabis has played an important role in rising rates,” Myran said in an ICES news release. For the study, the researchers looked at cannabis-involved ED visits for traffic injuries between 2010 and 2021, looking for changes after the October 2018 commercialization of the legal cannabis market, which expanded products and retail stores. The investigators reviewed data from more than 947,000 ED visits for traffic injuries in the province of Ontario. Annual rates of cannabis-involved visits surged from 0.18 visits per 1,000… read on > read on >