Training for the Olympics is difficult enough for even the healthiest of the athletes. Now imagine training for the biggest competitive sports event on the planet when you have Crohn's disease. Watch CNN's Rob Marciano profile sprint kayaker Carrie Johnson, who overcame Crohn's to make it to her third and final Olympic games: http://cnn.com/video/data/2.0/video/us/2012/07/24/dnt-carrie-johnson-kayak-olympics.cnn.html

Actor Ken Baumann was busy preparing for his wedding when he began experiencing intense stomach pains. Later, he would learn he had Crohn's disease. "The Secret Life of the American Teenager" star recently opened up to both People magazine and "Good Morning America" about how the disease has changed his life. Watch the link to his "Good Morning America" interview here: http://abcnews.go.com/GMA/video/secret-life-american-teenager-star-ken-baumann-battles-16802407