Sports-related concussions not proved to cause later brain disease, says expert group, Science

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Ninety-nine percent of ailing NFL player brains show hallmarks of neurodegenerative disease, autopsy study finds, Science

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Tua Tagovailoa's head injury puts NFL concussion protocol under scrutiny - The Washington Post

Sports-related concussions not proved to cause later brain disease, says expert group, Science

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Self-Reported Concussions from Playing a Sport or Being Physically Active Among High School Students — United States, 2017

Brain disease affecting pro football players appears to be rare in the military, study suggests