Legendary NFL quarterback Brett Favre is urging parents to keep their children out of tackle football until high school because of the risks of CTE.
A public service announcement starring Favre on behalf of the Concussion Legacy Foundation was released Tuesday.
It shows a young boy, wearing a green jersey with Favre's No. 4, telling his parents what he learned about CTE and telling them not to let him play tackle football until he is 14. Through the course of the minutelong ad, the boy grows to become a high school senior discussing how he could have already developed CTE, and ends with him morphing into Favre discussing how adults with CTE could have symptoms including depression, memory lapse and anger.