Montgomery said he got six concussions in one season alone, and others along the way, including one that knocked him out cold a few days before playing for the Eagles in the NFC title game at the end of the 1980 season.
"I know one thing: Back then, it didn't make any difference. They gave you smelling salts and then, after that, you went back in," Montgomery said. "I have headaches all the time. That's why I say my wife is always messing with me when I have outbursts, saying, 'You've been hit too many times upside the head.'"
Montgomery laughed for a moment. Then he rubbed his forehead and continued talking, mentioning former teammate and friend Andre Waters and opponent Dave Duerson. Both committed suicide; researchers studied their brain tissue and found signs of chronic traumatic encephalopathy, or CTE, a degenerative disease also found in boxers and often linked with repeated blows to the head. Former star linebacker Junior Seau, who shot himself in May, also was found to have CTE. Baltimore's starting center on Sunday, Matt Birk, has pledged to donate his brain for study when he dies.
"It's a serious thing," Montgomery said. "It's scary."
When the President of the United States refers to fans perhaps having a guilty conscience when watching a game and parents thinking twice before allowing a child to play — as Barack Obama did in a recent interview with The New Republic — it sends a strong signal about what confronts the NFL today.