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International Business Times UK
International Business Times UK
Terence Repelente

What Is CTE? Former Cowboys Star Marshawn Kneeland Found to Have Brain Disease After Death By Suicide

Late American football defensive end Marshawn Kneeland (Credit: Marshawn Kneeland / Facebook)

Former Dallas Cowboys defensive end Marshawn Kneeland was found to have early-stage chronic traumatic encephalopathy after his death by suicide, raising fresh concern about the hidden toll of repeated head impacts in American football.

Researchers at Boston University's CTE Center diagnosed Kneeland with Stage 1 CTE after examining his brain tissue following his death in November 2025.

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