After years of research and advocacy, concussion awareness is at an all time high. Many parents, coaches, and players are worried that sticking with football might mean risking a damaged brain.Between 1.6 and 3.8 million sports-related concussions occur annually, and football is responsible for the lion’s share. Football players are also subject to hundreds of small, subconcussive injuries per season; hits to the head that shake up the brain, but don’t rise to the level of a full-blown concussion.But the short term consequences—confusion, headache, fatigue, memory loss—aren’t what’s most concerning to the football world. For the majority of people, these most noticeable concussion symptoms resolve within a week. But more and more research suggests that the effects of even small impacts linger in the brain, and can cause neurological and psychiatric problems years later. Some people, including high school board members in New Hampshire and lawmakers in Illinois, have gone so far as to say we should ban the sport for kids and teens.