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Gut Health
Nov 30, 20258 min read

SIBO: The Hidden Cause of Your Bloating and Digestive Issues

Small Intestinal Bacterial Overgrowth affects up to 80% of IBS patients. Learn how to identify it and restore gut balance.

Dr. Maria Krista A. Pinol

Dr. Maria Krista A. Pinol, MD, RN

Lead Clinical Faculty — AccrediPro University

Medically reviewed by Dr. Maria Krista A. Pinol, MD, RN — Lead Clinical Faculty, AccrediPro University. Last reviewed April 5, 2026.

SIBO: The Hidden Cause of Your Bloating and Digestive Issues

If you bloat after eating, experience unpredictable bowel habits, and react to "healthy" foods like garlic and onions, SIBO may be the culprit.

What is SIBO?

Bacteria that should live in the large intestine migrate upward into the small intestine, where they ferment carbohydrates and produce hydrogen or methane gas—causing bloating, pain, and altered motility.

Testing for SIBO

A lactulose breath test measures hydrogen and methane gas production over 2-3 hours. Different gas patterns indicate different bacterial overgrowth types and guide treatment.

The Treatment Approach

Successful SIBO treatment addresses the overgrowth (antimicrobial herbs or antibiotics), restores motility, heals the gut lining, and prevents recurrence by addressing root causes. After clearing SIBO, apply the 5R Protocol to rebuild gut health. Our Functional Medicine Certification covers SIBO diagnostics and treatment protocols in depth.

References

  1. Pimentel M, et al. ACG Clinical Guideline: Small Intestinal Bacterial Overgrowth. Am J Gastroenterol. 2020;115(2):165-178. PubMed
  2. National Institute of Diabetes and Digestive and Kidney Diseases. Irritable Bowel Syndrome (IBS). NIDDK
  3. Quigley EMM. The gut microbiome and the liver: considering the 'ecosystem'. Liver Int. 2020;40(Suppl 1):115-119. PubMed
Tags:Functional MedicineGut HealthHealthWellness
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Dr. Maria Krista A. Pinol

About the Author

Dr. Maria Krista A. Pinol

MD, RN — Lead Clinical Faculty

Dr. Maria Krista A. Pinol is a physician and registered nurse with over a decade of clinical experience in integrative and functional medicine. She leads AccrediPro University's clinical curriculum, bridging conventional medical training with root-cause therapeutic approaches.

View Faculty Profile →

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