The document discusses the football concussion epidemic, detailing what a concussion is, common symptoms, and levels of severity. It notes that football is the highest risk sport for concussions for males, with professional football players experiencing 900-1500 head blows per season. While helmet technology and NFL concussion protocols have improved, concussions remain a major problem - once a player has had a concussion, they are more likely to sustain another if injured again. Advancements cannot eliminate concussions, and repeated brain injuries increase risks of long-term damage.