A new study published by JAMA Network Open estimates that 75% of former NFL players who died between 2008 and 2023 showed signs of a degenerative brain disease known as CTE. Yorghos Tripodis, a professor of biostatistics at Boston University, has more.

Source: [CBS News](https://www.cbsnews.com/video/study-estimates-nfl-players-died-recent-years-signs-of-cte/)

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