Study: 75% of Deceased NFL Players Diagnosed with CTE in Landmark 15-Year Analysis


A landmark study released this week reveals that approximately 75% of former National Football League players who died between 2008 and 2023 were diagnosed with chronic traumatic encephalopathy, the degenerative brain disease linked to repetitive high-impact trauma in contact sports. The analysis, representing the largest retrospective review of its kind, draws on medical records and neuropathological evaluations from a broad sample of deceased ex-players.
The findings arrive at a pivotal moment in the ongoing national conversation about player safety, which intensified following a wave of concussion-related lawsuits against the league in the early 2010s. Earlier research had suggested alarming CTE rates, but this 15-year dataset provides the most comprehensive statistical benchmark to date, reinforcing a pattern that has reshaped perceptions of the sport's long-term health costs.
In a statement reported by ESPN, NFL officials emphasized the league's commitment to aggressive rule modifications and continued investment in protective technology, while acknowledging the study's significance for future policy. Dr. Ann McKee, the neuropathologist who has become the public face of CTE research, told the network the data confirms what we've long suspected about the cumulative toll of the game, and the NFL Players Association called for immediate protocol revisions to prioritize long-term brain health.
Researchers anticipate the study will accelerate calls for mandatory brain health screenings upon retirement and fuel the next round of collective bargaining negotiations regarding retired-player benefits. Public health advocates suggest the data may also influence youth and amateur football reforms, as the cumulative evidence pressures the sport to confront whether rule changes alone can mitigate CTE risk or whether fundamental changes to how the game is played are inevitable.