There are studies to suggest that high fiber diets may ease a virulent and common organism called Clostridium difficile. This is a common bacteria that many patients can get in the hospital from taking too many antibiotics. This ‘ bug’ can cause severe diarrhea, intestinal pain and inflammation
Although this was a university study on mice it was shown that mice fed a high fiber diet typically cleared the bacteria from the GI tract to undetectable levels in less than two weeks
I find this interesting and more needs to be studied