True story behind Concussion ignored in locker rooms, says ex-NFLer

The medical drama Concussion, based on the true story of whistle blower Dr. Bennet Omalu, directly tackles one of football's most sensitive areas — but that doesn't mean his warnings were discussed in real locker rooms. 

The Nigerian forensic pathologist, played by Will Smith, rang the alarm about head injuries in the NFL while Nate Jackson was still hitting the field with the Denver Broncos. But the outspoken player says Omalu's work was never discussed, "not even one time," among his peers. 

Jackson, who is no longer with the NFL, joins guest host Rachel Giese to share fears stirred up by the film. He reflects on the culture of ignoring injuries (especially above the belly button) and the high cost of speaking up. 

"Football players are supposed to be immortal," he says. 

Journalist Daniel Engber, on the other hand, offers a more critical reaction. He says the film strays too far from the true story and fails to provide some important context.