It seems everytime an NFL or college football player is knocked out from a hard blow, it reignites the debate over how to protect athletes from concussions.   This week, the American Academy of Neurology released its updated guidelines to help make diagnosing concussions at sporting events easier. This month, Sports Illustrated devoted a special issue to addressing the impact of concussions on football, its players and its fans.  And CNN has done numerous reports on how teen brains are particularly at risk from concussions on the football field.

But what about the parents of those kids who must choose between supporting their child's passion and talent for the sport, and protecting him or her from the unknown?

Recently, CNN's Sarah Hoye spent time with a family in Sicklerville, New Jersey, whose son suffered a concussion last year at the high school state championship game.   Today, Calvin Lowe - pictured above – still plays football, as his parents cheer him on from the sidelines.  But his mother still struggles with the decision to let him return to football. "If I had my way, of course he'd be playing a much safer sport," she said.