{"id":22528,"date":"2025-10-06T00:01:00","date_gmt":"2025-10-06T04:01:00","guid":{"rendered":"https:\/\/www.ices.on.ca\/?post_type=news_release&p=22528"},"modified":"2025-10-01T11:58:06","modified_gmt":"2025-10-01T15:58:06","slug":"traumatic-brain-injuries-in-older-adults-linked-to-increased-risk-of-dementia","status":"publish","type":"news_release","link":"https:\/\/www.ices.on.ca\/fr\/news-releases\/traumatic-brain-injuries-in-older-adults-linked-to-increased-risk-of-dementia\/","title":{"rendered":"Traumatic brain injuries in older adults linked to increased risk of dementia"},"content":{"rendered":"

\u201cOne of the most common reasons for TBI in older adulthood is sustaining a fall, which is often preventable,\u201d write Dr. Yu Qing Huang, ICES PhD student, and Dr.\u00a0Jennifer Watt, associate professor and ICES scientist, both geriatricians at St.\u00a0Michael\u2019s Hospital, Unity Health, and affiliated with the University of Toronto, along with their coauthors. \u201cBy targeting fall-related TBIs, we can potentially reduce TBI-associated dementia in this population.\u201d<\/p>\n

Traumatic brain injuries are caused by a direct impact to the head or indirect force (e.g., whiplash) with one of the following: loss of consciousness, posttraumatic amnesia, disorientation, or neurological signs like slurred speech, muscle weakness, or vision changes. More than 50% of TBIs in older adults result from falls, and 1 million people in Canada over age 65 will experience a TBI in their lifetime.<\/p>\n

To understand the impact of late-life TBI and the association with new cases of dementia and related care needs, researchers analyzed data on more than 260\u00a0000\u00a0adults aged 65\u00a0years or older with and without TBI between April\u00a02004 and March\u00a02020. The study followed participants until a diagnosis of dementia, to March\u00a02021, or death. New TBI was associated with a 69% increased risk of subsequent dementia in the first 5\u00a0years, a 56% increased risk beyond 5\u00a0years, and more days of publicly funded home care (87\u00a0days compared with 84\u00a0days in people without TBI).<\/p>\n

Age and female sex were associated with higher risk of dementia, with about 1\u00a0in 3\u00a0people aged 85\u00a0years and older predicted to develop dementia after TBI. Income was also linked to dementia risk, with people from low-income neighbourhoods at higher risk of dementia than those in high-income neighbourhoods. People living in smaller communities, low-income regions, and areas with less ethnic diversity were more likely to be admitted to a long-term care facility.<\/p>\n

\u201cOur findings suggest that, to better align limited health resources with population needs, specialized programs such as community-based dementia prevention programs, and support services should be prioritized for female older adults (\u2265\u00a075) living in smaller communities and low-income and low-diversity areas.\u201d<\/p>\n

The authors intend for these results to help clinicians and families navigate the effects of a TBI.<\/p>\n

\u201cAlthough TBI has been studied as a risk factor for dementia in adulthood, our findings emphasize its significant association with an increased rate of incident dementia, even when it is sustained in late life, and how this risk changes over time,\u201d write the authors. \u201cThis critical information can assist clinicians in guiding older patients and their families to better understand long-term risks.\u201d<\/p>\n

\u201cRate of incident dementia and care needs among older adults with new traumatic brain injury: a population-based cohort study\u201d <\/em>is published October\u00a06, 2025.<\/p>\n

Research:<\/strong><\/em> https:\/\/www.cmaj.ca\/lookup\/doi\/10.1503\/cmaj.250361<\/em><\/a><\/p>\n

Media contacts<\/strong>:<\/p>\n

Charlotte Lam, media relations, ICES, media@ices.on.ca<\/a>
\nUnity Health, Communications@unityhealth.to<\/a><\/p>\n

General media contact:<\/strong> Kim Barnhardt, CMAJ<\/em>, kim.barnhardt@cmaj.ca<\/a><\/p>\n

Please credit CMAJ, not the Canadian Medical Association (CMA). CMAJ is an independent medical journal; views expressed do not necessarily reflect those of its owner, CMA Impact Inc., a CMA company, or CMA.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

Traumatic brain injuries (TBI) in older adults are associated with new cases of dementia, use of home care services, and admission to long-term care, according to new research published in CMAJ (Canadian Medical Association Journal).<\/p>\n","protected":false},"template":"","migration-helper-automated":[],"migration-manual":[],"topic":[41,55,17],"class_list":["post-22528","news_release","type-news_release","status-publish","hentry","topic-brain-diseases","topic-injuries-and-accidents","topic-older-people"],"acf":{"infographic":[22651],"journal_article":[22527],"research_report":"","atlas":"","research_program":[6740],"site":[6733],"ices_scientist":[1118,1159,1176,1121],"announce_or_event":"","video":"","iitn_type":"Article","iitn_title":"","iitn_short_title":"","iitn_source_link_url":"","iitn_source_link_text":"","sitecore_item_id":"","sitecore_item_name":"","sitecore_field_values":"","previous_url":""},"yoast_head":"\nICES | Traumatic brain injuries in older adults linked to increased 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