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New study estimates 75 percent of former NFL players who died from 2008 to 2023 had CTE

A new study from JAMA Network Open by researchers at Boston University, Mass General Brigham, and the Concussion & CTE Foundation has found that an estimated 75 percent of former NFL players who died between 2008 and 2023 had CTE.

Published: Thursday, 29 October 2026 at 2:22 AM
New study estimates 75 percent of former NFL players who died from 2008 to 2023 had CTE
Key Things to Know
  • A study estimates 75 percent of former NFL players who died from 2008 to 2023 had CTE.
  • The new research was published in JAMA Network Open.
  • The study was conducted by Boston University, Mass General Brigham, and the Concussion & CTE Foundation.
The Story in 60 Seconds

A newly published study estimates that roughly 75 percent of former NFL players who died between 2008 and 2023 had chronic traumatic encephalopathy (CTE). The research provides critical new data on the prevalence of the degenerative brain disease among former professional football players during that fifteen-year timeframe.

The findings were released by JAMA Network Open following collaborative research conducted by Boston University, Mass General Brigham, and the Concussion & CTE Foundation.

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