When Shane Devon Tamura walked into a midtown Manhattan office building with an assault rifle, he also carried a note in his back pocket that provides the only hint at why he opened fire on people in ...

NEW YORK — The former high school football player who killed four people inside a Manhattan office tower that houses the headquarters of the NFL, and who blamed the league for hiding the dangers of ...

BOSTON -- Former New England Patriots player Aaron Hernandez suffered substantial damage to parts of the brain that affect memory, judgment and behavior from the most severe case of a degenerative ...

To date, nearly 350 former NFL players have been diagnosed with chronic traumatic encephalopathy (CTE) after their death.

NIH-supported researchers found a 56% loss of specific neurons in athletes exposed to repeated head impacts. Brain changes appeared even without the tau protein buildup typically linked to chronic ...

Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. DNA damage in the brains of ...

The neurologic disease called chronic traumatic encephalopathy or CTE has most often been found in people who experienced repeated blows to the head while playing contact sports and there’s now ...