{"id":21900,"date":"2025-05-22T10:05:23","date_gmt":"2025-05-22T14:05:23","guid":{"rendered":"https:\/\/www.ices.on.ca\/?post_type=journal_article&#038;p=21900"},"modified":"2025-06-05T10:12:36","modified_gmt":"2025-06-05T14:12:36","slug":"minimum-legal-age-of-nonmedical-cannabis-purchase-laws-and-cannabis-related-hospitalizations-in-canada-2015-to-2022","status":"publish","type":"journal_article","link":"https:\/\/www.ices.on.ca\/fr\/publications\/journal-articles\/minimum-legal-age-of-nonmedical-cannabis-purchase-laws-and-cannabis-related-hospitalizations-in-canada-2015-to-2022\/","title":{"rendered":"Minimum legal age of nonmedical cannabis purchase laws and cannabis-related hospitalizations in Canada, 2015 to 2022"},"content":{"rendered":"<p><strong>Objectives<\/strong> \u2014 To determine whether the minimum legal age (MLA) for cannabis purchases is associated with reductions in cannabis-related hospitalizations in youths.<\/p>\n<p><strong>Methods<\/strong> \u2014 We performed a population-based study examining all hospitalizations for cannabis use in Canada for individuals aged 15 to 44 years (n\u2009=\u200914.6 million in 2018) between January 1, 2015, and March 31, 2022. MLAs varied across Canada. We used a controlled interrupted time series design to compare changes in cannabis-related hospitalizations between individuals above and below the MLA.<\/p>\n<p><strong>Results<\/strong> \u2014 There were 137\u2009901 cannabis-related hospitalizations during the study. Prelegalization rates of hospitalizations were increasing by 2% per quarter for individuals above and below the MLA. After legalization, hospitalizations began declining by 2% per quarter in individuals below the MLA (rate ratio [RR] quarterly slope change\u2009=\u20090.96; 95% confidence interval [CI]\u2009=\u20090.95, 0.98) with no slope change for individuals above the MLA. The total effect, 3.5 years after legalization, was a 34% reduction (relative difference\u2009=\u20090.66; 95% CI\u2009=\u20090.49, 0.91; P\u2009=\u2009.011) in hospitalizations for those below relative to those above the MLA.<\/p>\n<p><strong>Conclusions<\/strong> \u2014 Nonmedical cannabis legalization in Canada was associated with reductions in cannabis-related hospitalizations for youths below the MLA and with ongoing increases for individuals above the MLA.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Objectives \u2014 To determine whether the minimum legal age (MLA) for cannabis purchases is associated with reductions in cannabis-related hospitalizations in youths. Methods \u2014 We performed a population-based study examining all hospitalizations for cannabis use in Canada for individuals aged 15 to 44 years (n\u2009=\u200914.6 million in 2018) between January 1, 2015, and March 31, [&hellip;]<\/p>\n","protected":false},"template":"","migration-helper-automated":[],"migration-manual":[],"topic":[56,60],"migration-helper-qa-sample-set":[],"class_list":["post-21900","journal_article","type-journal_article","status-publish","hentry","topic-pharmacoepidemiology-and-drug-safety","topic-policy-and-program-evaluation"],"acf":{"citation":"Myran DT, Talarico R, Pacula RL, Xiao J, Manuel D, Hobin E, Konikoff L, Tanuseputro P, Taljaard M. <em>Am J Public Health<\/em>. 2025; May 22 [Epub ahead of print].","source_url":"https:\/\/doi.org\/10.2105\/ajph.2025.308090","ices_scientist":[17551,1323,21984],"site":[6734],"research_program":[6744],"news_release":"","journal_article":"","atlas":"","research_report":"","infographic":"","video":"","downloads":null,"links":null,"sitecore_item_id":"","sitecore_item_name":"","sitecore_field_values":"","previous_url":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>ICES | Minimum legal age of nonmedical cannabis purchase laws and cannabis-related hospitalizations in Canada, 2015 to 2022<\/title>\n<meta name=\"description\" content=\"Objectives \u2014 To determine whether the minimum legal age (MLA) for cannabis purchases is associated with reductions in cannabis-related hospitalizations in\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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