Research Update & Q&A with Dr. Mark Pimentel - February 2026
Watch the recording for SIBO Research Updates
In this session, Dr. Pimentel walks through:
- Why IBS, SIBO, and IMO overlap — and where they are meaningfully different
- Why the “60% post-infectious” finding matters for understanding root causes
- How hydrogen, methane, and hydrogen sulfide drive different symptom patterns
- Why hydrogen-only breath testing can miss key contributors
- What current research is showing about food poisoning, immune markers, and motility
Ways Shivan Sarna and I can support you
- 3 support options (Monthly Q&A, SIBO & IBS Support Membership, Small Group Coaching):
sibosos.com/options
Testing
- Trio-Smart, IBS-Smart, and Malabsorption tests at Gemelli Labs (cash pay online):
triosmartbreath.com/orderonline
Use code GEMELLISOS25 for $25 off
Elemental Diet
- mBiota Elemental Diet: https://mbiota.com/shivan_sarna
Use SAVE50 for $50 off or SAVE25 for $25 off if SAVE50 doesn’t apply
My Fullscript Dispensary (15% off professional-grade supplements)
- Fullscript Catalog sibosos.com/fullscript
- NAC Sustain by Jarrow (15% off at Fullscript)
- Charcoal (15% off at Fullscript)
- Digestive enzymes (15% off at Fullscript) (mentioned 'Pancreatic enzymes' are prescription: Creon, Zenpep...)
- Prokinetics (15% off at Fullscript)
Free training
- My Gut Supplement Masterclass (free): click here to watch
Amazon (items not carried on Fullscript)
I hope these tools help you take the next step with more confidence and clarity.
// ABOUT THE SPEAKER
Dr. Mark Pimentel, MD has honored our community with a deep dive into his latest research presented at Digestive Disease Week 2024. As head of the MAST-Pimentel Laboratory at Cedars-Sinai Medical Center in Los Angeles, Dr. Pimentel and his team work tirelessly to find a cure for gut motility diseases. He is the world's leading expert and researcher in the fields of IBS (Irritable Bowel Syndrome), SIBO (Small Intestine Bacterial Overgrowth), IMO (Intestinal Methanogen Overgrowth), and other functional gut disorders.
//ABOUT THE HOSTS
Shivan Sarna is the author of Healing SIBO, TV host, and the creator of the SIBO SOS® Summits and Community, the Digestion SOS® documentary series, the Gut & Microbiome Rescue Summit, the Lymphatic Rescue Summit, the Dental-Health Connection Summit, and Chronic Condition Research, a 501(c) 3 non-profit to further research under-funded medical conditions. After a lifetime of struggling with health issues, Shivan made it her mission to demystify her own health struggles - and to share that information with others who were struggling. Her special skill is finding and connecting with the leading expert doctors and connecting those experts with the people who need their help. Her personal mantra is SOS: Save Our Selves, and that's what she has helped thousands of people do!
Dr. Allison Siebecker is an Instructor of Advanced Gastroenterology at NUNM, an award-winning author, and the 2021 Lifetime Achievement Award recipient from the Gastroenterology Association of Naturopathic Physicians. She was the former medical director and co-founder of the SIBO Center for Digestive Health at NUNM. Dr. Siebecker has specialized exclusively in SIBO since 2011, serving as a second and third-opinion referral doctor for patients who have failed previous treatments and is the creator of many staple SIBO treatments. Dr. Siebecker is passionate about education, she has been teaching physicians, medical students, and patients internationally since 2010, with many going on to become SIBO specialists and teachers, sharing alongside her at conferences and in their own courses, websites, and books.

















