Doug King: Sports injury specialist says even a mild brain injury can significantly increase the risk of violent criminal behaviour

A potential link between concussion and violent crime is becoming clearer. New research out of AUT shows even a mild traumatic brain injury can significantly increase the risk of violent criminal behaviour over the following decade. Researchers looked at a comparative group based on various socio-economic backgrounds. Sports injury research specialist Doug King told Mike Hosking it doesn't have to be a serious injury. He says he sees it come through as child abuse, domestic violence, from players who have had head injuries in all sorts of sports. LISTEN ABOVE  See omnystudio.com/listener for privacy information.