10/28/2026
A new study estimates 75% of former NFL players who died between 2008-2023 had CTE.
It's a difficult number to confront, especially for former players and families already concerned about their brain health. But it's also an important step forward in understanding CTE.
For years, researchers have found CTE in a high percentage of former NFL players whose brains were donated to science. But what about the players whose brains weren't donated? This new study helps answer that question by accounting for potential bias in brain donations, providing a more representative estimate of CTE among deceased former NFL players.
As former NFL quarterback Matt Hasselbeck puts it, knowing what we're up against gives us a better chance of winning. And there's reason for hope.
Every new discovery brings us closer to understanding CTE, developing ways to diagnose it during life, and ultimately finding effective treatments. This research can also help inform efforts to make the game safer for future generations.
Importantly, these findings don't tell us how many living NFL players have CTE, and not everyone with CTE pathology develops symptoms.
For former players and families concerned about their brain health, you are not alone, and help is available.
Visit ConcussionAndCTE.org/HelpLine for guidance and support. Former NFL players can also access resources through The Trust - Powered by the NFLPA, the NFL Players Association's Professional Athletes Foundation, and the NFL Life Line (800-453-0078), which provides independent, confidential support 24/7.
The study was published today in JAMA Network Open and led by the Boston University CTE Center in collaboration with Mass General Brigham and the Concussion & CTE Foundation.
🔗 Read more: https://concussionandcte.org/news/press-release/boston-university-led-study-estimates-that-75-of-former-nfl-players-who-died-between-2008-2023-had-cte/