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 relea...
Source: [Guardian US](https://www.theguardian.com/sport/2026/aug/25/study-reports-that-one-in-four-former-nfl-players-suffer-from-degenerative-brain-disease-cte)