U.S. skiing champ Mikaela Shiffrin says post-injury PTSD will force her to skip defending giant slalom title
American champion Mikaela Shiffrin won't defend her giant slalom title at the world championships as she grapples with the mental impact of a major injury.
Brain study shows Conrad Dobler, once regarded as NFL's dirtiest player, had CTE
The family of Conrad Dobler, once regarded as the dirtiest player in the NFL, said he had CTE based on a study of his brain ...