Overview

What is Small Intestine Bacterial Overgrowth (SIBO)?

Small intestinal bacterial overgrowth (SIBO) refers to a condition where bacteria which are normally found lower in the large intestine have overgrown in the small intestine instead.

Abnormal amounts of these bacteria cause damage to the microvilli in the small intestines causing digestive and absorption issues leading to malnutrition and motility issues.

Symptoms

What are the signs of Small Intestine Bacterial Overgrowth (SIBO)?

The signs and symptoms of Bacterial Overgrowth (SIBO) include:

Nausea

Nausea

Pain and/or bloating after eating

Pain and/or bloating after eating

Flatulence

Flatulence

Gas

Gas

 Fatigue

Fatigue

Diarrhoea

Diarrhoea

Abdominal cramping, worse after meals

Abdominal cramping, worse after meals

Vomiting

Vomiting

Weight loss

Weight loss

Malnutrition

Malnutrition

Steatorrhea (fat in the stool)

Steatorrhea (fat in the stool)

Anaemia

Anaemia

B12 deficiency

B12 deficiency

Constipation

Constipation

Regular feeling of fullness

Regular feeling of fullness

Causes

What are the causes of Small Intestine Bacterial Overgrowth (SIBO)?

Drivers of SIBO include:

Microbial imbalance (dysbiosis)

Microbial imbalance (dysbiosis)

Leaky gut

Leaky gut

Food intolerances

Food intolerances

Poor detoxification

Poor detoxification

Immune dysregulation

Immune dysregulation

Complications of abdominal surgery

Complications of abdominal surgery

Structural problems in and around your small intestine

Structural problems in and around your small intestine

Certain medical conditions e.g.Crohn's disease, Coeliac disease, diabetes

Certain medical conditions e.g.Crohn's disease, Coeliac disease, diabetes

Diagnosis

How do I know if I have Small Intestine Bacterial Overgrowth (SIBO)?

To diagnose Small Intestine Bacterial Overgrowth (SIBO), you may be prescribed the following test:

GI Mapping stool test

GI Mapping stool test

Find a Practitioner

See a list of practitioners who are specialised in treating Small Intestine Bacterial Overgrowth (SIBO)