Meet Your Host

If you’re one of the 1 in 4 people who is living with a chronic digestive health condition , you’re not alone. Whether you’re just diagnosed, in remission, or trying to learn what is happening in your body and what you can do about it, then this podcast is for you.

 

Jacqueline A. Gaulin

Founder, Chief Strategy Officer

In each episode, Jacqueline Gaulin, longtime patient advocate and the Founder of Gastro Girl, Inc. and GI OnDEMAND, will tackle topics that go beyond the basic mainstream coverage of GI health to educate, inform and empower patients and their caregivers. If you crave the inside scoop on the latest news, research and resources related to gastroenterology, and want it all delivered in an engaging, friendly, nonjudgmental and educational way that features leading GI experts, inspiring patients and positive vibes, this podcast is also for you.

Gastro Girl, an official patient-education partner of The American College of Gastroenterology, is committed to providing actionable and evidence-based health information to help empower patients to better health.

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November 13, 2025

SIBO and IMO: Understanding Gut Overgrowth, Methane, and Archaea

In this follow-up to one of our most popular episodes, host Jacqueline Gaulin welcomes back Dr. Mark Pimentel, Executive Director of the Medically Associated Science and Technology (MAST) Program at Cedars-Sinai, to dive deeper into the science behind SIBO (Small Intestinal Bacterial Overgrowth) and IMO (Intestinal Methanogen Overgrowth). Dr. Pimentel answers listener questions and explains how these complex conditions relate to IBS-D and IBS-M, why methane and archaea matter for gut health, and how motility and the Migrating Motor Complex (MMC) play a crucial role in prevention and treatment. You’ll also learn about the latest insights and therapeutic approaches that can help patients find lasting relief. Produced in collaboration with the American College of Gastroenterology’s Patient Care Committee, this evidence-based discussion helps you better understand the “why” behind SIBO and IMO—and what steps you can take toward better gut health.

May 30, 2023

5 Things Patients Should Know About Small Intestinal Bacterial Overgrowth (SIBO)

Yes, you have bacteria in your gut. Yes, that’s normal. But small intestinal bacterial overgrowth (SIBO) is a gastrointestinal condition where there is an excessive amount of bacteria in the small intestine. SIBO can lead to uncomfortable symptoms including bloating, diarrhea and nausea, which overlap with other gastrointestinal conditions, making SIBO diagnosis a bit tricky. SIBO can also cause unintentional weight loss and malabsorption. Dr. Mark Pimentel, a leading gastroenterologist and SIBO expert from Cedars-Sinai Medical Center joins us to explain what’s really going on inside our gut with SIBO. He also gives us some insight on the causes, risk factors, and how SIBO is diagnosed and treated. Dr. Pimentel, who is the author of the book, The Microbiome Connection: Your Guide to IBS, SIBO, and Low-Fermentation Eating, also shares some surprising insight on how artificial sugars can affect our gut microbiome.

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