Small Intestine Bacterial Overgrowth is a bacterial colonization of the small intestine. These bacteria normally colonize the large intestine, but not the small intestine. The bacteria interfere with normal digestion and absorption of food, and are associated with damage to the lining or membrane of the small intestine.
Heartburn (reflux or GERD)
Respiratory symptoms (such as asthma)
Mood symptoms (such as depression)
Brain symptoms (such as autism)
Steatorrhea (fatty stools)
Iron deficiency anemia
Vitamin B12 deficiency