Hi Katie, I would encourage you to check out Dr. McDougall's book "Digestive Tune-up" and there's a lot of free information on his website www.drmcdougall.com, you can search "crohn's" and "ibs" and you can even email him directly - he usually responds. Crohn's is an auto-immune disease and as with many auto-immune diseases which are caused or exacerbated by leaky gut syndrome and/or leaky brain, a change in diet often corrects the problem or at the very least makes it much better.