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Repeated head impacts may quietly break the brain’s cleanup system

2025-11-28 22:47
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Researchers found that repeated head impacts can disrupt a key system that helps the brain wash away waste. In professional fighters, this system initially seems to work harder after trauma, then decl...

Researchers found that repeated head impacts can disrupt a key system that helps the brain wash away waste. In professional fighters, this system initially seems to work harder after trauma, then declines over time. MRI scans revealed that these changes may show up years before symptoms do. The work could help identify at-risk athletes earlier in their careers.