Research looked at prevalence of chronic traumatic encephalopathy in 2,362 players who died in 2008-2023

A new study published on Wednesday estimates that about 75% of former NFL players who died over a 15-year period had evidence of chronic traumatic encephalopathy (CTE).

The research, published in Jama Network Open and conducted by a Boston-based team, examined the estimated prevalence of the degenerative brain disease among NFL players who died from 2008 through 2023. Researchers found that the estimated rate of CTE among these players was substantially higher than the rates observed in brain samples collected from the general population.

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© Photograph: Stan Grossfeld/The Boston Globe via Getty Images

© Photograph: Stan Grossfeld/The Boston Globe via Getty Images

© Photograph: Stan Grossfeld/The Boston Globe via Getty Images

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