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Vets Return With Brain Injuries Oft Seen In Football

Chronic traumatic encephalopathy (CTE) is best-known for affecting football players; repeated bangs to the head can hurt the parts of the brain that direct impulse, memory and emotion. Now, scientists are finding evidence of CTE in the brains of veterans from Iraq and Afghanistan. Dr. Bob Stern from Boston University School of Medicine talks to weekends on All Things Considered host Guy Raz.