At least 25% of former NFL players who died between 2016 and 2021 had CTE, study finds NPR Study’s Alarming Finding: At Least 1 in 4 N.F.L. Players Gets Brain Disease The New York Times NFL: At least one in four dead players had brain disease, says study BBC Study: At least 25% of NFL players in sample had CTE ESPN 1 in 4 former NFL players who died from 2016 to 2021 had CTE, study estimates CNN
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