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SIBO and Gallbladder Removal
Small intestinal bacterial overgrowth is significantly more common after gallbladder surgery. Here’s the direct connection to bile, why it recurs, and what breaks the cycle.
What SIBO is and why it matters
Small intestinal bacterial overgrowth — SIBO — occurs when bacteria that normally populate the large intestine migrate into and proliferate in the small intestine, where they don’t belong. In the small intestine, these bacteria ferment food before it can be properly absorbed, producing gas, bloating, diarrhea, constipation, and nutrient malabsorption. SIBO is associated with a wide range of systemic symptoms beyond digestion: fatigue, brain fog, skin issues, and mood changes. It’s also significantly more common in people who’ve had their gallbladder removed than in the general population.
Why cholecystectomy increases SIBO risk
Bile has potent antimicrobial properties. In a healthy digestive system, concentrated bile released in response to meals helps regulate bacterial populations throughout the digestive tract — keeping certain bacteria in check and maintaining the microbial boundary between the small and large intestine. After cholecystectomy, bile becomes diluted and continuous rather than concentrated and pulsatile. Its antimicrobial effect is weakened. The bacterial boundary becomes more permeable. Overgrowth follows.
How to recognize SIBO in a post-cholecystectomy context
SIBO symptoms overlap significantly with general post-cholecystectomy symptoms — which is part of why it goes unidentified. Bloating that’s worse after carbohydrate-rich meals, gas within 30–90 minutes of eating, alternating constipation and diarrhea, and persistent fatigue despite otherwise reasonable digestion are patterns worth investigating. SIBO is diagnosable via breath testing and treatable — but it tends to recur if the underlying bile disruption driving it isn’t also addressed.
Treatment and the recurrence problem
SIBO treatment without addressing bile flow is one of the more common patterns in this population that leads to repeated recurrence. Antimicrobial protocols — whether pharmaceutical or botanical — can reduce the bacterial load. But if the conditions that allowed overgrowth to develop in the first place haven’t changed, repopulation follows. Restoring bile’s antimicrobial function as part of the overall protocol is what breaks the recurrence cycle.
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About Elizabeth
Elizabeth Farrell-Carpenter, FNTP, RWP
Elizabeth is a Functional Nutritional Therapy Practitioner and Restorative Wellness Practitioner who specializes in post-cholecystectomy recovery and complex digestive dysfunction. She has been through this herself. She built the framework she wished she’d had — and has spent over a decade helping people understand what actually happened and what to do about it.
Prefer to work directly with Elizabeth? Her private practice programs offer one-on-one clinical support for people who want a more guided path.
The Foundation Program (6 months) — A guided recovery program for people dealing with persistent digestive issues who haven’t found answers through conventional medicine.
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