According to the Crohn’s & Colitis Foundation of America, an estimated 700,000 people are affected by Crohn’s in the U.S. You’ve probably heard of some of them.  Here’s a list of seven celebrities who have been vocal about their battle with Crohn’s:

1. Cynthia McFadden

An NBC News correspondent, Cynthia McFadden was first diagnosed with Crohn’s in college. Her friends decided to name her condition “George,” and Cynthia has referred to her Crohn’s as George ever since. The 60-year-old had 15 inches of her intestines removed in 1979, and the surgery has helped her to stay in remission for the most part. McFadden is an advocate for the Crohn’s & Colitis Foundation of America (CCFA).

Read more about these twins with IBD who raise money to help Crohn’s & Colitis Foundation of America’s “Take Steps” initiative.