{"id":23164,"date":"2026-02-02T00:01:00","date_gmt":"2026-02-02T05:01:00","guid":{"rendered":"https:\/\/www.ices.on.ca\/?post_type=news_release&#038;p=23164"},"modified":"2026-05-07T15:22:41","modified_gmt":"2026-05-07T19:22:41","slug":"more-ontarians-are-being-diagnosed-with-psychosis-than-those-born-in-earlier-decades","status":"publish","type":"news_release","link":"https:\/\/www.ices.on.ca\/fr\/news-releases\/more-ontarians-are-being-diagnosed-with-psychosis-than-those-born-in-earlier-decades\/","title":{"rendered":"More Ontarians are being diagnosed with psychosis than those born in earlier decades"},"content":{"rendered":"<p><b><span data-contrast=\"auto\">Toronto, ON, February 2, 2026<\/span><\/b><span data-contrast=\"auto\">\u00a0\u2014 A new study suggests that\u00a0<\/span><span data-contrast=\"auto\">people born more recently are being diagnosed with psychotic disorders (e.g., schizophrenia) more often and at younger ages compared with people born\u00a0earlier.\u00a0<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:200,&quot;335559740&quot;:276}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">The study included over 12 million individuals who were born between 1960 and 2005 and followed them for new diagnoses of a psychotic disorder between 1993 and 2023. Over the study, 152,587 individuals were diagnosed with a psychotic disorder. Researchers from\u00a0<\/span><b><span data-contrast=\"auto\">ICES<\/span><\/b><span data-contrast=\"auto\">,\u00a0<\/span><b><span data-contrast=\"auto\">North York General<\/span><\/b><span data-contrast=\"auto\">,\u00a0<\/span><b><span data-contrast=\"auto\">The Ottawa Hospital<\/span><\/b><span data-contrast=\"auto\">, and\u00a0<\/span><b><span data-contrast=\"auto\">Bruy\u00e8re Health Research Institute<\/span><\/b><span data-contrast=\"auto\">\u00a0found that the rate of new diagnoses of psychotic disorders started rising for people born in the 1980s and later. For example, individuals born in 2000-2004 were estimated to have a 70 per cent greater rate of new diagnoses of psychotic disorders compared to those born in 1975-1979. The total number of people diagnosed with a psychotic disorder by the time they reached age 30 increased by 37.5 per cent higher for those born in 1990-1994 compared to 1975-1979.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:200,&quot;335559740&quot;:276}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">\u201cPsychotic disorders can have profound negative impacts on a person\u2019s life, including their mental and physical health, education, work, and relationships,\u201d says Dr. Daniel Myran, Gordon F. Cheesbrough Research Chair in Family and Community Medicine, North York General and a scientist at ICES and the Bruy\u00e8re Health Research Institute. \u201cWhile some of the increases in psychotic disorder diagnoses in people born in the 1980s and 1990s may reflect improvements in care and early diagnosis, these patterns raise important concerns about generational changes in exposure to factors that increase the risk of psychotic disorders.\u00a0<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:200,&quot;335559740&quot;:276}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">\u201cWe\u00a0don\u2019t\u00a0yet know\u00a0what\u2019s\u00a0driving these changes, and\u00a0it\u2019s\u00a0likely there\u00a0isn\u2019t\u00a0a single explanation. Understanding\u00a0what\u2019s\u00a0behind this trend will be critical to prevention and early support.\u201d<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:200,&quot;335559740&quot;:276}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">Risk factors associated with psychosis, including early life substance use and older-aged parents, may contribute to the rise of psychotic disorders.\u00a0<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:200,&quot;335559740&quot;:276}\">\u00a0<\/span><\/p>\n<p><b><span data-contrast=\"auto\">Key findings:<\/span><\/b><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:200,&quot;335559740&quot;:276}\">\u00a0<\/span><\/p>\n<ul>\n<li aria-setsize=\"-1\" data-leveltext=\"\u00b7\" data-font=\"Symbol\" data-listid=\"5\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\u00b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">The incidence rate of people aged 14 to 20 diagnosed with a psychotic disorder\u00a0<\/span><b><span data-contrast=\"auto\">increased by 60 per cent<\/span><\/b><span data-contrast=\"auto\">, from 62.5 to 99.7 per 100,000 individuals.\u00a0<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559685&quot;:720,&quot;335559737&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:276,&quot;335559991&quot;:360}\">\u00a0<\/span><\/li>\n<\/ul>\n<ul>\n<li aria-setsize=\"-1\" data-leveltext=\"\u00b7\" data-font=\"Symbol\" data-listid=\"5\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\u00b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"2\" data-aria-level=\"1\"><span data-contrast=\"auto\">Compared with Ontarians born in 1975-1979,\u00a0<\/span><b><span data-contrast=\"auto\">the incidence of schizophrenia was 70 per cent higher among those born in 2000-2004<\/span><\/b><span data-contrast=\"auto\">.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559685&quot;:720,&quot;335559737&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:276,&quot;335559991&quot;:360}\">\u00a0<\/span><\/li>\n<\/ul>\n<ul>\n<li aria-setsize=\"-1\" data-leveltext=\"\u00b7\" data-font=\"Symbol\" data-listid=\"5\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\u00b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"3\" data-aria-level=\"1\"><span data-contrast=\"auto\">The total number of people diagnosed with a psychotic disorder by the time they reached ages 20 and 30 were\u00a0<\/span><b><span data-contrast=\"auto\">74.1 per cent and 37.5 per cent higher<\/span><\/b><span data-contrast=\"auto\">, respectively, for those born in 1990-1994 compared to 1975-1979.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559685&quot;:720,&quot;335559737&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:276,&quot;335559991&quot;:360}\">\u00a0<\/span><\/li>\n<\/ul>\n<p><span data-contrast=\"auto\">\u201cWhile incidence and prevalence remain low, some international studies suggest that schizophrenia and other psychotic disorders are on the rise among young people, with an increased role of substance use, but this study is the first to examine recent birth cohorts in North America,\u201d says Dr. Marco Solmi, Clinician Investigator, The Ottawa Hospital, Director of Research, Associate Professor and Chair in Evidence-based Mental Health, University of Ottawa, and co-author of the study.\u00a0<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:200,&quot;335559740&quot;:276}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">One of the limitations of the study was that people born in the 1960s and early 1970s who developed psychosis in early adulthood and\u00a0subsequently\u00a0did not interact with the health system were not included in the cumulative estimates.\u00a0<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:200,&quot;335559740&quot;:276}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"none\">The study \u201cIncidence of psychotic disorders by birth cohort: a population-based cohort study in Ontario, Canada\u201d is in the February issue of <\/span><i><span data-contrast=\"none\">CMAJ<\/span><\/i><span data-contrast=\"none\">.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:200,&quot;335559740&quot;:276}\">\u00a0<\/span><\/p>\n<p><i><span data-contrast=\"auto\">\u00a0<\/span><\/i><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:200,&quot;335559740&quot;:276}\">\u00a0<\/span><\/p>\n<p style=\"text-align: left;\"><b><span data-contrast=\"auto\">ICES<\/span><\/b><span data-contrast=\"auto\">\u202fis an independent, not-for-profit research and analytics institute that uses population-based health information to produce knowledge on a broad range of healthcare issues. ICES leads\u00a0cutting-edge\u00a0studies and analyses evaluating healthcare policy, delivery, and population outcomes. Our knowledge is highly regarded in Canada and abroad and is widely used by government, hospitals, planners, and practitioners to make decisions about healthcare delivery and to develop policy. For the latest ICES news, follow us on BlueSky and LinkedIn: @ICESOntario\u00a0\u00a0\u00a0<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:276}\">\u00a0<\/span><\/p>\n<p><b><span data-contrast=\"auto\">North York General<\/span><\/b><span data-contrast=\"auto\">\u00a0is one of Canada\u2019s leading community academic hospitals with a vision to deliver World-Class Care, 24\/7. Affiliated with the University of Toronto, our multi-site campus supports our diverse community through every stage and life-defining moment by\u00a0providing\u00a0a wide range of acute care, ambulatory and long-term care services.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:276}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">North York General is a member of the North York Toronto Health Partners, an Ontario Health Team that integrates local care with patients, primary\u00a0care\u00a0and community partners.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:276}\">\u00a0<\/span><\/p>\n<p><b><span data-contrast=\"auto\">Bruy\u00e8re Health Research Institute<\/span><\/b><span data-contrast=\"auto\">\u00a0conducts world-class research to maximize quality of life and shape the future health care. As part of an academic sciences centre, our research supports evidence-based care with a focus on aging and long-term care, palliative care, rehabilitation and recovery, and social accountability. To learn more, visit\u00a0<\/span><a href=\"http:\/\/www.bruyere.org\/\"><span data-contrast=\"none\">www.bruyere.org<\/span><\/a><span data-contrast=\"auto\">.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:276}\">\u00a0<\/span><\/p>\n<p><b><span data-contrast=\"auto\">The Ottawa Hospital<\/span><\/b><span data-contrast=\"auto\">\u00a0is one of Canada\u2019s top learning and research hospitals, where excellent care is inspired by research and driven by compassion. As the third-largest employer in Ottawa, our support staff, researchers, nurses, physicians, and volunteers never stop seeking solutions to the most complex health-care challenges. Our multi-campus hospital, affiliated with the University of Ottawa, attracts some of the most influential scientific minds from around the world. Backed by generous support from the community, we are committed to providing the world-class, compassionate care we would want for our loved ones.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:276}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">The\u00a0<\/span><b><span data-contrast=\"auto\">University of Ottawa<\/span><\/b><span data-contrast=\"auto\">\u00a0is powered by research. Located in Canada\u2019s capital, we bring together energetic and creative scholars to tackle urgent global challenges and seize emerging opportunities.\u00a0<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:276}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">As one of Canada\u2019s most innovative universities, we generate breakthroughs and discoveries that make a real difference in communities in Ontario, across Canada and around the world. Our thought leaders\u00a0provide\u00a0evidence-based insights that inform policy and support industry.\u00a0<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:276}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">Our influence continues to grow due to our vast range of international partnerships, including our membership in the U7+ Alliance. As the world\u2019s largest\u00a0French-English\u00a0university, we are a driving force in the Francophonie.\u00a0<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:276}\"><\/p>\n<p><\/span><\/p>\n<p><b><span data-contrast=\"auto\">FOR FURTHER INFORMATION PLEASE CONTACT:\u202f<\/span><\/b><span data-contrast=\"auto\">\u202f\u00a0<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:200,&quot;335559740&quot;:276}\"><br \/>\n<\/span><span data-contrast=\"auto\">Charlotte Lam\u00a0<\/span><br \/>\n<span data-contrast=\"auto\">Communications Associate<\/span><br \/>\n<span data-contrast=\"auto\">ICES\u202f\u00a0<\/span><br \/>\n<a href=\"mailto:media@ices.on.ca\"><span data-contrast=\"none\">media@ices.on.ca<\/span><\/a><span data-contrast=\"auto\">\u202f\u00a0<\/span><br \/>\n<span data-contrast=\"auto\">437-317-8804<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:200,&quot;335559740&quot;:276}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">Kent Anjo<\/span><br \/>\n<span data-contrast=\"auto\">Senior Communications Specialist\u00a0<\/span><br \/>\n<span data-contrast=\"auto\">Corporate Communications &amp; Public Affairs, North York General<\/span><br \/>\n<a href=\"mailto:Corporate.Communications@nygh.on.ca\"><span data-contrast=\"none\">Corporate.Communications@nygh.on.ca<\/span><\/a><br \/>\n<span data-contrast=\"auto\">416-540-4127<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:200,&quot;335559740&quot;:276}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">Jenn Ganton<\/span><br \/>\n<span data-contrast=\"auto\">Communications and Public Relations<\/span><br \/>\n<span data-contrast=\"auto\">Ottawa Hospital Research Institute<\/span><br \/>\n<a href=\"mailto:jganton@ohri.ca\"><span data-contrast=\"none\">jganton@ohri.ca<\/span><\/a><br \/>\n<span data-contrast=\"auto\">613-614-5253<\/span><\/p>\n<p><span data-contrast=\"auto\">Paul Logothetis<\/span><br \/>\n<span data-contrast=\"auto\">Media Relations Advisor<\/span><br \/>\n<span data-contrast=\"auto\">uOttawa<\/span><br \/>\n<a href=\"mailto:plogothe@uOttawa.ca\"><span data-contrast=\"none\">plogothe@uOttawa.ca<\/span><\/a><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:200,&quot;335559740&quot;:276}\">\u00a0<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>A new study suggests that\u00a0people born more recently are being diagnosed with psychotic disorders (e.g., schizophrenia) more often and at younger ages compared with people born\u00a0earlier.\u00a0\u00a0<\/p>\n","protected":false},"template":"","migration-helper-automated":[],"migration-manual":[],"topic":[16,34,35],"class_list":["post-23164","news_release","type-news_release","status-publish","hentry","topic-children-and-young-people","topic-mental-health-and-addictions","topic-public-health"],"acf":{"infographic":[23230],"journal_article":[23163],"research_report":"","atlas":"","research_program":[6744],"site":[6734],"ices_scientist":[17551,1377,1152],"announce_or_event":"","video":"","iitn_type":"Article","iitn_title":"Psychosis diagnoses have risen among young Canadians, data shows","iitn_short_title":"","iitn_source_link_url":"https:\/\/www.nytimes.com\/2026\/02\/02\/health\/pyschosis-young-people-cannabis-canada.html","iitn_source_link_text":"The New York Times","sitecore_item_id":"","sitecore_item_name":"","sitecore_field_values":"","previous_url":""},"yoast_head":"<!-- This site is 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