Foods have minimal connection, at best unless there is a known disorder (celiac disease, for ex.). Many people have tried to make a connection and perhaps there is one... but you an drive yourself crazy trying to diagnose / treat with diet. The underlying problem is auto-immune, and there are so many triggers for IBD. Most point to bacteria, which diet can affect. But again, until they understand diet w/ bacterial growth w/ individual genetics w/ a multitude of other things, we will not get to the combined root cause.