{"id":22720,"date":"2025-11-06T00:01:00","date_gmt":"2025-11-06T05:01:00","guid":{"rendered":"https:\/\/www.ices.on.ca\/?post_type=news_release&#038;p=22720"},"modified":"2026-05-07T15:29:28","modified_gmt":"2026-05-07T19:29:28","slug":"concussions-linked-to-increased-risk-of-a-serious-traffic-crash","status":"publish","type":"news_release","link":"https:\/\/www.ices.on.ca\/fr\/news-releases\/concussions-linked-to-increased-risk-of-a-serious-traffic-crash\/","title":{"rendered":"Concussions linked to increased risk of a serious traffic crash"},"content":{"rendered":"<p><b><span data-contrast=\"auto\">Toronto, ON,\u00a0November 6, 2025<\/span><\/b><span data-contrast=\"auto\"> \u2013 Adults diagnosed with a concussion may be at about 50 per cent higher risk of a subsequent traffic crash, finds a new study from researchers at <\/span><b><span data-contrast=\"auto\">ICES<\/span><\/b><span data-contrast=\"auto\">\u00a0and\u00a0<\/span><b><span data-contrast=\"auto\">Sunnybrook<\/span><\/b><span data-contrast=\"auto\">\u00a0<\/span><b><span data-contrast=\"auto\">Research Institute<\/span><\/b><span data-contrast=\"auto\">.<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">Concussions can temporarily affect brain function, with symptoms including insomnia, dizziness, depression, brain fog, and slowed reaction times that can linger for weeks. These symptoms could alter driving skills and increase the risk of a motor vehicle accident. <\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">\u201cI worry that sometimes a concussion requires more recovery time than most people realize,\u201d says Dr. Donald Redelmeier, scientist at ICES and Sunnybrook Research Institute. \u201cRushing things might lead to another injury including a life-threatening traffic crash.\u201d<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<p><b><span data-contrast=\"auto\">Key findings:<\/span><\/b><span data-contrast=\"auto\">\u202f<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<ul>\n<li aria-setsize=\"-1\" data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"4\" 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;\uf0b7&quot;,&quot;469777815&quot;:&quot;multilevel&quot;}\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">The increased risk\u00a0of a traffic crash is\u00a0<\/span><b><span data-contrast=\"auto\">particularly high\u00a0during the\u00a0first four\u00a0weeks after a concussion<\/span><\/b><span data-contrast=\"auto\">.<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/li>\n<li aria-setsize=\"-1\" data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"4\" 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;\uf0b7&quot;,&quot;469777815&quot;:&quot;multilevel&quot;}\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">The\u00a0overall\u00a0traffic risks\u00a0increased further\u00a0with repeated\u00a0concussions.\u00a0<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/li>\n<li aria-setsize=\"-1\" data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"4\" 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;\uf0b7&quot;,&quot;469777815&quot;:&quot;multilevel&quot;}\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">The\u00a0traffic\u00a0risks\u00a0also applied\u00a0to pedestrians\u00a0crossing the street.<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/li>\n<li aria-setsize=\"-1\" data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"4\" 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;\uf0b7&quot;,&quot;469777815&quot;:&quot;multilevel&quot;}\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">Of the 425,158\u00a0adults\u00a0diagnosed with a concussion\u00a0in the study,\u00a0<\/span><b><span data-contrast=\"auto\">one in 13\u00a0patients\u00a0were\u00a0injured<\/span><\/b><span data-contrast=\"auto\">\u00a0in a\u00a0subsequent\u00a0traffic\u00a0crash.\u00a0<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/li>\n<li aria-setsize=\"-1\" data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"4\" 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;\uf0b7&quot;,&quot;469777815&quot;:&quot;multilevel&quot;}\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">The increased risk accounted for\u00a0<\/span><b><span data-contrast=\"auto\">1,633 total ambulance\u00a0calls<\/span><\/b><span data-contrast=\"auto\">,\u00a0<\/span><b><span data-contrast=\"auto\">59,978 days in hospital<\/span><\/b><span data-contrast=\"auto\">,\u00a0and\u00a0<\/span><b><span data-contrast=\"auto\">$835 million<\/span><\/b><span data-contrast=\"auto\">\u00a0in medical costs.<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/li>\n<\/ul>\n<p><span data-contrast=\"auto\">Some\u00a0limitations\u00a0of the study\u00a0include\u00a0the lack of data on\u00a0concussion\u00a0severity,\u00a0as well as other\u00a0factors that predispose patients to concussions\u00a0as well as\u00a0contribute\u00a0to traffic crashes.\u00a0While\u00a0the findings cannot\u00a0establish\u00a0cause and effect,\u00a0concussions can\u00a0lead to\u00a0symptoms\u00a0that increase\u00a0the risk of\u00a0a\u00a0serious\u00a0traffic crash.\u00a0<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">\u201cThese results highlight the importance of traffic safety\u00a0following a\u00a0concussion as well as preventing concussions in the first place,\u201d says Robert\u00a0Tibshirani,\u00a0a\u00a0professor of\u00a0statistics at Stanford University\u00a0and\u00a0also\u00a0a co-author of the study.<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">The researchers recommend\u00a0patients\u00a0treat\u00a0insomnia, headaches, depression,\u00a0or substance misuse\u00a0and\u00a0also\u00a0avoid\u00a0high-speed trips during late-night hours in\u00a0bad weather\u00a0during\u00a0the\u00a0first month after a concussion.\u00a0Clinicians\u00a0should also warn patients\u00a0about road\u00a0traffic\u00a0safety\u00a0after a\u00a0concussion.<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">The study \u201cConcussions and risk of a subsequent traffic crash: retrospective cohort analysis in Ontario, Canada\u201d is in the\u00a0November\u00a0issue of\u00a0<\/span><i><span data-contrast=\"auto\">BMJ Open<\/span><\/i><span data-contrast=\"auto\">.\u202f\u202f<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">\u202f<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<p><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 cutting-edge studies 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\u202f \u202f<\/span><\/p>\n<p><b><span data-contrast=\"auto\">Sunnybrook Research Institute (SRI)<\/span><\/b><span data-contrast=\"auto\">\u00a0is the research arm of Sunnybrook Health Sciences\u00a0Centre,\u00a0an internationally recognized academic health sciences centre fully affiliated with the University of Toronto. With well-established programs in basic and applied sciences which span across three scientific platforms and\u00a0eleven\u00a0clinical programs, SRI is developing innovations in care for the more than 1.1 million patient visits the hospital provides annually.\u202f\u202f<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<p><b><span data-contrast=\"auto\">FOR FURTHER INFORMATION PLEASE CONTACT:\u202f<\/span><\/b><span data-contrast=\"auto\">\u202f\u202f<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">Charlotte Lam\u202f<\/span><br \/>\n<span data-contrast=\"auto\">Communications Associate<\/span><br \/>\n<span data-contrast=\"auto\">ICES\u202f\u202f<\/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\u202f<\/span><br \/>\n<span data-contrast=\"auto\">437-317-8804\u202f<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">Nadia Norcia<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335551550&quot;:0,&quot;335551620&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:276}\"><br \/>\n<\/span><span data-contrast=\"auto\">Communications Advisor<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335551550&quot;:0,&quot;335551620&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:276}\"><br \/>\n<\/span><span data-contrast=\"auto\">Sunnybrook Health Sciences Centre<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335551550&quot;:0,&quot;335551620&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:276}\"><br \/>\n<\/span><a href=\"mailto:nadia.norcia@sunnybrook.ca\"><span data-contrast=\"none\">nadia.norcia@sunnybrook.ca<\/span><\/a> <span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335551550&quot;:0,&quot;335551620&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:276}\"><br \/>\n<\/span><span data-contrast=\"auto\">416-480-4040<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335551550&quot;:0,&quot;335551620&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:276}\">\u00a0<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Adults diagnosed with a concussion may be at about 50 per cent higher risk of a subsequent traffic crash, finds a new study from researchers at ICES\u00a0and\u00a0Sunnybrook\u00a0Research Institute.\u00a0<\/p>\n","protected":false},"template":"","migration-helper-automated":[],"migration-manual":[],"topic":[55,35],"class_list":["post-22720","news_release","type-news_release","status-publish","hentry","topic-injuries-and-accidents","topic-public-health"],"acf":{"infographic":"","journal_article":[22719],"research_report":"","atlas":"","research_program":[6745],"site":[6733],"ices_scientist":[1337],"announce_or_event":"","video":"","iitn_type":"Video","iitn_title":"New study is shedding light on the connection between concussions and car accidents","iitn_short_title":"","iitn_source_link_url":"https:\/\/www.ctvnews.ca\/toronto\/video\/2025\/11\/11\/new-study-is-shedding-light-on-the-connection-between-concussions-and-car-accidents\/","iitn_source_link_text":"CTV News","sitecore_item_id":"","sitecore_item_name":"","sitecore_field_values":"","previous_url":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.1 - 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