Study: Repeated Hits, Not Concussions, Cause CTE

By Nadia Kounang, CNN (CNN) — The neurodegenerative disease chronic traumatic encephalopathy can start early and without any signs of concussion, according a study released Thursday.
The Alzheimer’s-like disease has been most commonly associated with former professional football players, but has also been detected in military veterans, including many who have been exposed to roadside bombs and other types of military blasts.
Previous studies have shown that repetitive hits to the hea