CHARLOTTE -- The discussion of head injuries in the NFL is center stage again because of Will Smith's new movie "Concussion."

He plays the role of Dr. Bennet Omalu, the man who discovered the link between football and chronic traumatic encephalopathy, or CTE and concussions.

There's been some controversy because of the movie. Some say it's going to scare people away from the game, but one doctor told us she thinks it's going to benefit parents and young athletes.

"It's going to be those athletes who don't understand what a concussion is or may not understand how dangerous it is. This is bringing that knowledge to the forefront so that we can avoid these kinds of deaths and these incidences, where you've got secondary impact, which is a complication of a concussion, where you could go into a coma, vegetative state or even die," said Dr. Smitha Ballyamanda, Piedmont Medical Center.

"Concussion" hits theaters Christmas Day.