Fighters’ Brains Show a Surprising Cleanup Surge Before Dangerous Collapse

Researchers studying pro fighters discovered that repeated head impacts can overload and eventually weaken the brain’s waste-disposal network. MRI biomarkers showed that cognitively impaired athletes initially had unusually high glymphatic activity that later collapsed with continued trauma. This decline may accelerate the buildup of harmful proteins tied to dementia. Glymphatic Decline From Repeated Head Impacts [...]