Football is a violent sport. Over the last decade, the NFL has taken many steps to protect players, particularly when it comes to head trauma and chronic traumatic encephalopathy (CTE). KYW Medical Editor Dr. Brian McDonough has more.

<p>Football is a violent sport. Over the last decade, the NFL has taken many steps to protect players, particularly when it comes to head trauma and chronic traumatic encephalopathy (CTE). KYW Medical Editor Dr. Brian McDonough has more.</p>

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