The popular NASCAR driver hid his condition, now fears his risk for CTE.
Dale Earnhardt Jr. will miss at least four races after a relatively harmless looking crash.
Extreme sports icon Dave Mirra had been exhibiting personality changes, a sign of chronic traumatic encephalopathy, ahead of his suicide earlier this year.
Dale Jr. says that a story on three former Oakland Raiders players who plan to donate their brains in honor of late teammate Ken Stabler is what prompted him to pledge his own brain to the Concussion Legacy Foundation.
Dale Earnhardt, Jr. is joining the ranks of NFL players and other athletes donating their brains to concussion and CTE research following his death.
We're going to switch gears and step away from the automotive realm for a minute and talk about football. It's one of America's favorite sports, with pro and college teams duking it out on the gridiron every fall and on into winter. It's inherent danger, though, has been making news the last few years due to the sport's alarming number of concussions.