My husband was actually hospitalized with a severe diverticulitis attack and had intermittant pain for years until he started eating a well-balanced high fiber diet. Yes, if you start adding fiber too fast you will be very bloated and gassy. However, his digestive system has completely adjusted now and he has not had an attack in about five years. He was previously taking Flagyl at least three times yearly. If you start increasing fiber a little slower you will have fewer negative symptoms.