All these replies that say it made no diff at al, is exactly what my gi says. That crohns has nothing to do with dairy- gluten etc. but many do say it helps with symptoms, so it may be harder for those to digest such foods in the first place. I don't believe diet can help all that much, maybe just with some symptoms, but meds, and I guess if your son dosnt seem to tolerate gluten or dairy or whatever, as well, in combination may place him in remission. Do you keep a food diary for him. It may help to try it for a month, and see if his symptoms improve. Best wishes xoxo