NEW YORK — NFL linebacker Junior Seau, who committed suicide last year, had a debilitating brain disease, likely from 20 years of blows to the head, ABC News and ESPN reported Thursday. Seau, 43, died in May after shooting himself in the chest, one of a handful of former players to have committed suicide after their retirement. He had played for the San Diego Chargers and had a 20-year career in the National Football League. A study of Seau's brain by a team of independent researchers found that he had suffered from chronic traumatic encephalopathy, or CTE, the report said. — Reuters