gastrointestinal disorders
Small Intestinal Bacterial Overgrowth (SIBO)
Key Points
Anatomic alterations in stomach or intestines or intestinal motility disorders lead to gastrointestinal stasis and thus bacterial overgrowth. Bacteria deconjugate bile salts, causing fat malabsorption. Diagnosis is made using a glucose-hydrogen orlactulose-hydrogen breath test or quantitative culture of intestinal aspirate. Oral antibiotics are used, and a high-fat, low-carbohydrate diet is followed. 