New links revealed between TBIs and dementia

Scientific

The risk of developing dementia has been shown to be far greater in individuals who have suffered traumatic brain injuries (TBIs) in the past.

This is the conclusion of one of the largest studies to date into a potential link between TBIs and dementia, with a review of nearly 2.8 million patient cases undertaken in Denmark and the results published in The Lancet Psychiatry.

“One of the largest ever studies into potential links between traumatic brain injury and dementia has been carried out in Denmark.“

According to its findings, the overall risk for dementia is 24 percent higher for those who have suffered a single TBI against individuals with no history of this type of injury.

This rose to 33 percent in cases of two or three TBIs, 61 percent for four TBIs, and 183 percent higher for five or more.

Lead author Jesse Fann, a professor of psychiatry and behavioral sciences at the University of Washington School of Medicine, stated: "What surprised us was that even a single mild TBI was associated with a significantly higher risk of dementia.

"The relationship between the number of traumatic brain injuries and risk of dementia was very clear."

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