Small bowel bacterial overgrowth

Nature 
Small bowel bacterial overgrowth (SBBO) is a proliferation of colonic-type bacteria in the upper gastrointestinal tract (the stomach, duodenum, and jenjunum). It only occurs when the normal defenses against bacterial proliferation are reduced by factors such as slowed peristalic motion, reduced gastric acidity, exposure to antibiotics, and surgical resection of the small intestine SBBO causes malabsorption, lethargy, fatigue, and various gastrointestinal symptoms. It is difficult to eradicate, and is principally treated by trying to eliminate the overgrown population of microbes with various antimicrobial drugs. It often requires continued treatment.
Type 
(G) Very specific problems