College football players in the United States endure over 1000 head hits every season. Although many don’t produce symptoms such as dizziness or blurred vision that often accompany frank concussion, these “clinically silent” hits are associated with the same type of brain damage as concussion, according to a recent Science Advancesstudy.
Sancar F. Subconcussive Football Hits May Leave a Telltale Signature of Brain Damage. JAMA. 2019;322(16):1537–1538. doi:10.1001/jama.2019.15361
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