What Is Small Intestinal Bacterial Overgrowth (SIBO)?
Various bacteria are present in the human small intestine as part of normal intestinal flora, but when they overgrow, they may cause diarrhea. They may also break down bile acids, necessary for absorption of fats, thus reducing absorption of fats and fat-soluble vitamins A, D and E. In severe cases, bacteria may damage small intestinal wall thus impairing carbohydrate and protein absorption resulting in malnutrition. Anemia may develop, when bacteria break down vitamin B12.
