CTE

Scientists have found that horned animals like muskox or bighorn sheep that head-butt each other do not escape unharmed and can end up with concussion and other serious head traumas.

The plan approved Friday could allow many former players to resubmit their claims of dementia caused by repeated head trauma from their time in the league.

A doctor said Tuesday the former NFL player had "severe" CTE when he allegedly shot and killed six people in April.

The former NFL player is accused of shooting six people before killing himself on April 7.

"You know you got no business researching it. Just go to your doctor," Howard Stern said on Tuesday.

"When I'm your age, what will matter to me is not my youth football career, but that like you, I'm a great parent," Favre says in a new PSA.

Researchers discovered an "abnormal" reduction of white matter in the brains of elite rugby players.

"It was a complete and total shock to me," Hernandez's lawyer said of his death.

Such damage has been seen only in people over 46. He was 27.

Costas, who made a name for himself covering the NFL, said the long-term future of the sport is uncertain.

A Los Angeles judge ruled last week that Kimberly Archie and Jo Cornell's lawsuit against the nonprofit can continue.

Hernandez ended his life in prison in April.

Gisele Bundchen, Brady's wife, made the revelation during an interview Wednesday.

Boston University researchers will study the former New England Patriots player's brain for signs of chronic traumatic encephalopathy, or CTE.

Players had fought the deal because it doesn't cover future victims of brain disease CTE.

Largest study of its kind showed correlation between time spent playing football and the extent of brain damage.

NFL officials denied the link as recently as February.

Heath professionals have written an open letter calling for a switch to touch rugby for young people.

Stabler is only the latest former player to have been posthumously diagnosed with CTE.

The film, which opened on Christmas Day in the U.S., examines the brain-injury crisis.

The question isn't, "Is football dangerous?" It's, "Can it ever be safe?"