Some foods are easier to avoid: popcorn, green salads, seeds, high fat (causes/worsen D), big steaks (for me), alcohol (lots of).
While other are more subtle... if you eat 2, 3 or 4 days in a row you can get a flare, but they doesn't "flare" you immediatly, but they vary from on to another, like: coffee, dairy, soda, yeast (not sure), black beams, chokolate, citric fruits and there we go...
Some times I feel like a living lab.
Brazilian sick fellow...
Diagnosed in nov/94 - Started with Prednisone, followed by Pentasa and Imuran
Blockage - First Surgery 2001 (no ressection)
Severe bleedind - 2003 - Stopped by 60mg of Prednisone
Stricture leading to a ressection in Dec/2008 - Second Surgery
Now on Remicade + 100 mg Imuran + Iron