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215 of 235 donated brains showed signs of CTE
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Global — Reuters and Guardian sport
215 of 235 donated brains showed signs of CTE
Condition can only be diagnosed after death
Symptoms include problems with memory and mood
At least one in four former NFL players who died between 2016 and 2021 was found to have had chronic traumatic encephalopathy (CTE), according to a study released on Tuesday.
Out of the 878 former players who died during that time frame, 235 donated their brains for study, researchers said, with 215 of those donated brains found to have CTE, a degenerative disease that can only definitively be diagnosed after death. CTE is associated with repeated blows to the head, including concussions. Symptoms include difficulty with attention and memory, dementia, mood disorders and headaches.
Condition can only be diagnosed after death
This report is published with credit to The Guardian. The wire sent a summary; open the original for any extra context. Read on The Guardian →
Source: The Guardian · Reuters and Guardian sport. Published 25 Aug 2026, 11:36 am.
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