Concussions among athletes in the National Football League grab all the headlines when it comes to the injuries plaguing professional sports, and for good reason. Anyone close to the sports doesn’t need Will Smith to tell them how serious a traumatic brain injury can be — the potential side effects of a concussion can produce life-changing or even life-threatening results. Having said that, concussions in football players isn’t the only health issue impacting professional athletes.

Click "View Slideshow" to see four more health issues that barely anyone is talking about: