Dr. Mike explains what may have caused Bills' safety Damar Hamlin's life-threatening injury
Dr. Mike joins the 10 O'Clock News to discuss what might have caused Bills' safety Damar Hamlin to collapse following a tackle. Hamlin, 24, was rushed to the hospital in critical condition after he collapsed shortly after making a tackle.
Top Videos
Dr. Mike explains what may have caused Bills' safety Damar Hamlin's life-threatening injury
Man shot execution style, killed, while on bike in South Philly
Family files lawsuits over horrific death of Chester County girl
