Table 1.

Risk Factors for the Development of Small Intestinal Bacterial Overgrowth

Stfuctufal/Anatomic — Small intestine diverticula — Small intestine strictures (radiation, medications, Crohn's disease) — Surgically created blind loops — Resection of ileocecal valve — Fistulas between proximal and distal bowel — Gastric resection Motility Disorders — Gastroparesis — Small bowel dysmotility — Celiac disease — Chronic intestinal pseudo-obstruction Irritable Bowel Syndrome Metabolic Disorders — Diabetes — Hypochlorhydria Elderly Organ System Dysfunction — Cirrhosis — Renal failure — Pancreatitis — Immunodeficiency states — Crohn's disease — Celiac disease — Malnutrition Medications — Recurrent antibiotics — Gastric acid suppression