Add me to the list of SCDers. Since I started eating that way, my acid reflux disappeared (no more Protonix, yeah!!!), 3 fistulas healed, constipation is mostly gone (my 4 day transit is now a 2 day transit), my skin doesn't itch for no reason anymore, my blood tests come back in the normal range (that's certainly a change), my seasonal allergies have improved, and my recent colonoscopy was really good (except for my scarred ileocal valve). The only thing bad is that my cholesterol has gotten worse, but a lot of people have told me that's normal, and that it should go back down once my body has healed more.
I definitely think diet can help. A lot of people say they feel better just by eliminating gluten from their diet.
You could try doing an elimination diet. Start with just a few simple foods that you're very certain you tolerate, perhaps something like meat, eggs, yogurt, & applesauce. Then add one new food every 2 to 4 days, and note any reaction.
A food diary is a must. For instance, my dad (also Crohn's) thinks he can remember everything that he eats and doesn't need a food diary, and he also doesn't think popcorn bothers him. But I've noted that every time he eats it, his crohn's bothers him a couple days later. He never made the connection until I pointed it out to him. He probably would have if he had a diary.
34 years old, Crohn's disease for 15 of them
Current Meds: Humira since 7/08, Pentasa, Effexor XR
Supplements: 3 kinds of Fish Oil, Multi-Vitamin, B-Complex, Vitamins D, E, & K, Calcium, Magnesium, Enzymes
SCD since 12/01/08 - eating Stage 3 foods