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Brain lesions in former football players linked to vascular, brain changes - Video
Overview
Signs of injury to the brain's white matter called white matter hyperintensities, as seen on brain scans, may be tied more strongly to vascular risk factors, brain shrinkage, and other markers of dementia in former tackle football players than in those who did not play football, according to a study published in the December 20, 2023, online issue of Neurology, the medical journal of the American Academy of Neurology.
“Studies have shown that athletes exposed to repetitive head impacts can have increased white matter hyperintensity burden in their brains,” said study author Michael L. Alosco, PhD, of Boston University Chobanian & Avedisian School of Medicine. “White matter hyperintensities are easily seen on MRI as markers of injury of various causes. We know these markers are more common as people age and with medical conditions such as high blood pressure, but these results provide initial insight that they may be related to multiple aspects of brain damage from repetitive head impacts.”
Alosco said looking at white matter hyperintensities on brain scans may be a promising tool to study the long-term effects of repetitive head impacts. Repetitive head impacts have also been associated with chronic traumatic encephalopathy (CTE), a neurodegenerative disease that can result in dementia.
The study does not prove that repetitive head impacts and white matter hyperintensities cause other brain changes. It only shows an association.
The study involved 120 former professional football players and 60 former college football players with an average age of 57. They were compared to 60 men with an average age of 59 who had no symptoms, did not play football, and had no history of repetitive head impacts or concussion.
The relationship between white matter hyperintensities and stroke risk was more than 11 times stronger in former football players than in those who did not play football. For p-tau, the relationship was 2.5 times stronger in the football players. For a measure of white matter integrity, the relationship was nearly 4 times stronger in the former football players.
Reference: Brain lesions in former football players linked to vascular, brain changes; Neurology