@CNN: One concussion could increase the risk of developing Parkinson’s disease, according to new research in veterans https://t.co/kqgc5AsQRx https://t.co/UwtaBvzi2X

@CNN: One concussion could increase the risk of developing Parkinson’s disease, according to new research in veterans https://t.co/kqgc5AsQRx https://t.co/UwtaBvzi2X