CTE is a progressive, degenerative brain condition linked to repeated head trauma, especially in contact sports and military ...

LAS VEGAS -- The gunman who killed four people before taking his own life in a midtown Manhattan office building that houses the NFL's headquarters had for years sought medical help for frequent, ...

During evening rush hour in New York City on Monday, a man calmly walked into a Park Avenue office building lobby and killed ...

Officer Didarul Islam, 36, who was guarding the building on a paid security job when he was killed, had served as a police ...

A 2017 study found that more than 87% of football players tested across all levels — high school, college, and pros — tested ...

The man who shot four people dead with an assault-style rifle inside a Midtown Manhattan skyscraper was carrying a "suicide ...

Denzel Perryman, a linebacker for the Los Angeles Chargers, had two AR-style rifles and three handguns concealed in his trunk.