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Study finds brain disease in one in four NFL players
A BMJ study tracked every former NFL player who died between 2016 and 2021 against confirmed CTE diagnoses, replacing an earlier 99% figure built only from donated brains. The piece covers the method, the researchers' findings on where head impacts actually occur, and what remains unproven about symptoms.
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For parents of young athletes, former players, and anyone who saw the '1 in 4' headline and wants to know what the study actually measured, what it means for game and practice safety, and what remains unknown about symptoms.
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