Shane Tamura is suspected of shooting four people in Midtown Manhattan, where the NFL offices are. A note he left references the NFL and CTE.

After killing four and taking his own life, Shane Tamura — a former football player at two L.A.-area high schools — left ...

CTE is defined as a progressive neurodegenerative disease that causes brain damage similar to what’s seen in patients with ...

Shane Tamura, a former football player at Golden Valley and Granada Hills high schools, entered a New York skyscraper and ...

The progressive brain disease can be caused by repeated trauma to the head and has caused serious health problems for athletes who participate in contact sports, such as football.

The lasting effects of head trauma in football and tragic stories of NFL players like Junior Seau who have suffered from CTE ...

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

A 911 call cited by CNN reveals the fear Shane Tamura's mother expressed about the safety of her son as well as herself ...

We have a long way to go in understanding the brain injury implicated in the NYC shooting.

The scientific breakthrough study of CTE in the early 2000s, and its tie to football, astonished many fans. Former NFL star linebacker Junior Seau, who took his own life in 2012, was diagnosed ...

After more than a decade of denial, the NFL conceded the link between football and CTE in 2016 testimony before Congress, and has so far paid more than $1.4 billion to retired players to settle ...

Brain experts said it could take weeks to learn whether Shane Tamura, the gunman who killed four people in Manhattan, had CTE.