This is unrelated to your primary question (already well-answered by byoung2), but you may also want to look at recent research in Crohn's treatment, such as the use of fecal transplants.
Thanks for the link. I'm excited that Crohns seems to be an area with promising active research so we might have it solved in the next few decades. For me personally, as my condition is only mild / moderate, I believe I should be able to get it under control without the more experimental methods, although will always consider them when appropriate. Between my father (who is a doctor) and my mother (who is ... open minded), no potential treatment seems to go unanalysed in my household.
I myself has been doing Taoist Tai Chi for 10+ Years and I remembered this video http://youtu.be/7PSjQAscVL8 that a Chrohn's sufferer made about how the tai chi had helped him.