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Symptoms and Signs of SIBO (Small Intestinal Bacterial Overgrowth) Symptoms, Diet, Natural/Antibiotic Treatments, and IBS

Doctor's Notes on SIBO (Small Intestinal Bacterial Overgrowth) Symptoms, Diet, Natural/Antibiotic Treatments, and IBS

SIBO (small intestinal bacterial overgrowth) signs and symptoms include flatulence (excess gas), abdominal bloating or distention, diarrhea and abdominal pain. Some patients have chronic constipation, body aches and/or fatigue. Some patients appear to be malnourished.

Abnormally large populations of bacteria digesting food in the intestine produce enough gas so that it can accumulate in the abdomen and cause SIBO disease. These bacteria also convert foods like sugars and carbohydrates in large amounts that are irritating or toxic to cells of the intestinal tract. At the same time, they compete with the patient for food. Partial or intermittent obstruction of the small intestine can encourage the growth of these bacteria; other conditions such as neurologic and muscular diseases that slow the gastrointestinal motility so that bacterial overgrowth is not swept away. Diverticuli (pouches in the GI small intestine mucosa) allow large bacterial populations to thrive as the populations are not swept away even with normal GI motility.

Medical Author:
Medically Reviewed on 3/11/2019

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REFERENCE:

Kasper, D.L., et al., eds. Harrison's Principles of Internal Medicine, 19th Ed. United States: McGraw-Hill Education, 2015.

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