Sports stars you didn't know had medical conditions
World famous athletes who battled diseases and deficiencies
CELEBRITY Athletes
It's not easy being the best. Muhammad Ali, Lionel Messi, and Venus Williams are seen as some of greatest athletes ever. That said, did you know that they have all suffered from serious medical conditions? That's right, many sports stars have battles illnesses and diseases. Get to know these brave and bold athletes in this new gallery.