For me, I avoid sugar (can handle fruit sugar to an extent), gluten, rice, artificial anything and bottom feeding fish (shrimp, crab, etc). these seem to be the killers for me and lead to major flare ups. I stick to lean meats, chicken, pork and turkey, non-starchy vegetables, nuts and healthy fats (I can tolerate dairy). I take supplements for any areas i feel I am not getting nutrients because of my eliminated foods.