Masterclass with Dr. Allison Siebecker
What goes wrong in the body to allow SIBO to happen, and all the diseases, medications, and other risk factors that can cause SIBO.
Dr. Allison Siebecker
Underlying Causes Masterclass
with Dr. Allison Siebecker and Hosted by Shivan Sarna
Shivan Sarna
The Underlying Causes of SIBO
What caused your SIBO – and more importantly, why does it matter? Learn about the most common underlying causes of SIBO in this Masterclass, plus how to determine the underlying causes in your case. Then, find out why knowing your underlying cause is such an important part of the healing process, and how misunderstanding your underlying cause could lead to needless suffering.
1-Hour Exclusive Medical Conference Level Class
Become an expert from your own home, at your own pace.
Listen to the Questions Asked & Answered!
Questions answered by Dr. Allison Siebecker during the 2-hour Q&A session recording.
Unlimited Access to Recordings & Transcripts
Downloadable audio and professional transcripts of the class and Q&A.
The difference between a “risk factor” and an underlying cause of SIBO – and why it matters
What to do if you have multiple underlying causes of SIBO
What the Migrating Motor Complex (MMC) is and how it can cause SIBO
The link between SIBO and food poisoning (and the series of events Dr. Siebecker sees over and over again)
How to tell if you have chronic or acute SIBO and why that matters for treatment
"Testing and retesting greatly increases our success. It takes away guessing
and that always increases success." Dr. Allison Siebecker
Your Teacher: Dr. Allison Siebecker
Dr. Allison Siebecker is a Naturopathic Physician, award-winning author and international conference lecturer. She was the Co-Founder and former Medical Director of the SIBO Center for Digestive Health at the National University of Natural Medicine (NUNM). As a researcher, groundbreaking curriculum creator, patient advocate, and educator of both patients and doctors she is considered a thought leader and innovator in the field of Small Intestine Bacterial Overgrowth (SIBO) and Irritable Bowel Syndrome (IBS).
Dr. Siebecker has been in clinical practice since 2006 and a SIBO specialist since 2010. Her faculty positions include NUNM, where she teaches Advanced Gastroenterology, and the GI Health Foundation, where she serves as the only Naturopathic Physician on the all Gastroenterologist IBS Board. Her passion for SIBO education inspired her to create her free educational website, siboinfo.com in 2011, an online resource for both patients and practitioners. She also Co-Founded the NUNM SIBO Symposium, NUNM GI Conference, and SIBO SOS™ Summits.
🔒 For your security, all orders are processed on a secured server.
Here's What You Get:
- Complete Video Masterclass — Dr. Siebecker walks you through everything, including real test examples showing positive, negative, and commonly missed patterns.
- Answers without studying the materials including the Q&A recording and slides - Just ask. Smart Search pulls the exact answer from the videos and slides.
- Plus 2 hours of Q&A Real questions from patients and practitioners—the tricky patterns, confusing results, and "what about my situation?" moments that don't fit neatly into a lecture. People consistently tell us they're surprised how much they learn from other people's questions.
- Presentation Slides — 48 slides covering interpretation criteria and Dr. Siebecker's specific recommendations.
- Instant Unlimited Access revisit the masterclass anytime.
- Audio Version Listen on the go and absorb the insights without needing screen time.
- 15% off over 20,000+ professional-grade supplements with Dr. Siebecker's recommendations
- $50 off discount on SIBO Tests
🔒 For your security, all orders are processed on a secured server.
This Masterclass Is For You If:
→ Someone mentioned SIBO testing and you have no idea where to start
→ You've taken a test and don't understand your results
→ You tested "negative" but still have all the symptoms
→ You're a practitioner who wants to stop relying on lab interpretations that miss real cases
→ You need to retest after treatment and want to do it right
“These masterclasses dive deep into the current understandings of SIBO, gut issues, and other comorbidities. I literally can not imagine where I would be without her and all of this content.”
Anne
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“Being introduced to SIBO has given me hope that I can change my life and live without symptoms. I’m getting a breath test THIS WEEK!”
James
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“The class was extremely thorough. I found affirmation that I have many of the common underlying causes for SIBO. I learned about many more causes I wasn't aware of.”
Betty
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Together, we created these resources to give you the guidance and support we wish we had when we started our own healing journeys. We’ve both been where you are now, and we know exactly how overwhelming it can feel. But we also know there’s a way forward — a clear path to healing that we’re excited to share with you.
Dr. Allison Siebecker
ND, MSOM, LAc
Dr. Siebecker is the 2021 GastroANP Lifetime Achievement award winner (from her peers) and has treated SIBO exclusively for 15 years. She is in an instructor of advanced gastroenterology and NUNM and co-created the SIBO treatment algorithm used by practitioners worldwide. She's not teaching theory. She's teaching what actually works—the interpretation methods she uses with real patients who finally got better and practitioners around the world.
Shivan Sarna
Author of Healing SIBO
Shivan Sarna, founder of SIBO SOS® and author of Healing SIBO. After a lifetime of digestive problems, she was diagnosed with SIBO (Small Intestine Bacterial Overgrowth) in 2015. Shivan was so excited to finally have a name for the symptoms that made me miserable – but she was quickly very frustrated by how hard it was to get access to reliable SIBO information, or even an appointment with a doctor who had experience treating SIBO. She set out to get answers about SIBO for herself – but along the way, she met thousands of people who had the same challenges.
Sound familiar? These questions come up constantly—so we built a class to answer them.
Do I need a doctor’s order to get a SIBO breath test?
No. Dr. Allison Siebecker explains how you can order a lactulose breath tests yourself (no doctor required) and complete the test at home.
Which test should I get for my symptoms?
The masterclass breaks down which gas types are most commonly tied to constipation, diarrhea, or mixed symptoms—so you can choose the right testing approach instead of guessing.
My test says “negative,” but I still feel awful.
Could my IBS actually be SIBO?
Do GLP-1 impact SIBO?
Is there a prep diet for testing?
This is exactly why the class exists. Labs use standardized criteria that can miss real cases, and Dr. Siebecker teaches how she interprets results differently.
What’s the problem with the 90-minute cutoff on lab reports?
What causes sudden, unexplained weight loss or nutrient deficiencies?
What causes chronic diarrhea and constipation together?
How do I test for SIBO?
Where do I get the test?
Can I test at home?
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