The research around SIBO is evolving, and 2026 has brought more subtypes, testing and treatment options than ever before. Our guest this week, Dr. Allison Siebecker, is an expert in conventional and natural approaches to SIBO, helped to open one of the first integrative SIBO centers in the nation, and frequently teaches physicians about how to effectively treat even the toughest cases of SIBO, ISO, IMO and more. Today, we explore how hydrogen, methane (IMO), and hydrogen sulfide–associated (ISO) pattern-typing can help us choose treatment options that help to decrease SIBO symptoms effectively. We discuss how impaired motility - particularly dysfunction of the migrating motor complex - can impact symptom persistence and relapse in addition to microbial type and load, and why we should address it in treatment plans. Dr. Siebecker also reviews the newest advances in SIBO testing, breath test interpretation, and how long to test depending on what you’re looking to discover. If SIBO has felt like a guessing game in your practice, or if you’re just looking to stay on the leading edge, this episode offers a clearer, physiology-driven framework grounded in education that will help your clients get and stay well.

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