“Total Brian Injury (TBI) is a quiet crisis. As many as 3.2 million Americans are living with a permanent disability resulting from a brain injury. The Centers for Disease Control and Prevention report that 1.7 million Americans sustain a traumatic brain injury each year. Fifty-two thousand people die from it. Almost a quarter-million people are hospitalized.”

BrainLine.org (All about Brain Injury and PTSD)