I also have fistulizing Crohn's and am and has always been fat. I just started remicade and I am also on SCD diet. I started the diet right before the remicade and was feeling better before the remicade. I am hoping between the 2 that the fistule heals and the inflamation is lowered. If the fistule heals I will go off remicade (with my Dr ok) and continue with SCD.
I have met other fat Crohn's people. You aren't alone