An overview of SIBO symptoms and treatment by Christine Barnes, M.Well, N.D. 

What is SIBO?

  • Definition: SIBO is the overgrowth of bacteria in the small intestine, often a symptom of broader health issues rather than a standalone diagnosis.
  • Common Causes: Bacterial imbalance or migration to inappropriate areas within the gut.

Symptoms of SIBO

  • Digestive Issues: Bloating, gas, diarrhoea, constipation, and indigestion.
  • Nutritional Deficiencies: Reduced absorption of nutrients leading to deficiencies in vitamins, minerals, and fatty acids.
  • Systemic Effects: Fatigue, brain fog, and potential hormonal imbalances.
  • Other Indicators: Bad breath, greasy stools, food intolerances, and joint pain.

Contributing Factors to SIBO

  • Lifestyle and Medical History:
    • Stress
    • Proton pump inhibitors
    • Food poisoning
    • Past antibiotic use
  • Health Conditions:
    • Coeliac disease, Crohn's, diabetes, liver disease.
    • Conditions leading to slow motility (gastroparesis).
  • Environmental Factors:
    • Parasites like Giardia from contaminated water.
    • Heavy metal toxicity.

Types of SIBO

  • Hydrogen Dominant: Often associated with diarrhea and fat malabsorption.
  • Methane Dominant: Linked to constipation and bloating; sometimes weight gain.
  • Hydrogen Sulfide Dominant: Causes diarrhea and sulfur-smelling flatulence.

Testing for SIBO

  • Breath Testing: Identifies types and levels of SIBO (hydrogen, methane, hydrogen sulfide).
  • Comprehensive Gut Testing: Includes microbiome mapping and intestinal permeability tests for a holistic view.

Approaches to Treatment

  • Nutritional and Herbal Interventions:

    • Biofilm disruptors (e.g., Serrapeptase) to expose bacteria.
    • Herbal antimicrobials like oregano oil, garlic, and berberine.
  • Dietary Adjustments:

    • Temporarily reduce fermentable carbohydrates and prebiotic-rich foods.
    • Tailored diets for methane or hydrogen dominant SIBO.
  • Restoration Phase:

    • Healing the gut lining using supplements like glutamine.