SIBO

Small intestinal bacterial overgrowth (SIBO) refers to an increase in the number of bacteria in the small intestine. This can lead to a variety of symptoms that are often misdiagnosed as other conditions such as IBS and depression.

SIBO is often caused by a dysfunction in the ileocecal valve, which separates the small intestine from the large intestine. This can allow bacteria to travel from the large intestine into the small intestine, where they can rapidly multiply and don’t belong.

SIBO is also associated with a number of other conditions, such as irritable bowel syndrome (IBS), inflammatory bowel disease (IBD), and celiac disease.

SIBO can lead to a range of symptoms including:

• Bloating and gas
• Abdominal pain
• Diarrhea
• Weight loss and loss of appetite
• Nausea
• Feeling uncomfortably full after eating
• Diarrhea
• Nutritional deficiencies
• Depression and/or anxiety
• Sleep issues
• Brain fog

The conventional approach to treating Small Intestinal Bacterial Overgrowth (SIBO) often begins with a frustrating challenge: the lack of recognition and accurate diagnosis. Many individuals suffering from SIBO find themselves initially labeled with Irritable Bowel Syndrome (IBS) due to the overlapping symptoms.

This misdiagnosis can lead to a delay in appropriate treatment and prolonged discomfort for patients. In the conventional medical field, IBS is often considered a diagnosis of exclusion, meaning it is assigned when other known conditions are ruled out.

However, what may have been dismissed as IBS symptoms could actually be indicative of an underlying SIBO condition.

This misclassification occurs because the symptoms of SIBO, such as bloating, abdominal pain, altered bowel habits, and fatigue, closely resemble those of IBS. Unfortunately, the traditional approach to managing IBS typically focuses on symptom management rather than addressing the root cause.

This may involve the use of medications to alleviate specific symptoms, such as antispasmodics for cramping or laxatives for constipation.

While these treatments may provide temporary relief, they do not target the bacterial overgrowth in the small intestine that characterizes SIBO. Moreover, the conventional approach tends to rely heavily on pharmaceutical interventions, often overlooking the potential benefits of holistic and integrative therapies.

Lifestyle factors, such as diet, stress management, and gut motility, which play a crucial role in SIBO, are often overlooked or not given sufficient attention in conventional treatment plans.

Another challenge with the conventional approach is the limited testing options for SIBO.

The gold standard diagnostic test, called the Small Intestinal Bacterial Overgrowth Breath Test, is not widely available or routinely performed. Consequently, individuals experiencing SIBO symptoms may undergo numerous tests and consultations before receiving a definitive diagnosis.

There are several potential factors that contribute to the development of SIBO.

These include persistent use of antibiotics, impaired gut motility, overeating, over consumption of alcohol, unchecked food intolerances and a diet high in carbohydrates.

SIBO is also more common in people with certain medical conditions such as celiac disease, Crohn's disease, and diabetes.

If you think you may have SIBO, it is important to find the right practitioner who knows how to test for it.

We dig deep to uncover the underlying triggers and root causes of SIBO.

Factors such as impaired gut motility, structural abnormalities, immune dysfunction, and dietary imbalances are thoroughly evaluated.

By identifying and addressing these underlying issues, functional medicine aims to correct the imbalances that contribute to SIBO, offering long-term relief.

Recognizing that each individual is unique, functional medicine emphasizes personalized treatment plans tailored to the specific needs of the patient.

This approach takes into account the individual's medical history, symptoms, test results, and lifestyle factors.

Treatment plans often include dietary modifications, targeted supplementation, probiotics, antimicrobial protocols, and lifestyle adjustments to restore gut health and rebalance the microbiome.

Gut health is intricately connected to other systems in the body. A holistic approach is employed to address not only the gut but also other areas that may be contributing to SIBO, such as stress management, hormonal imbalances, and immune system dysfunction.

By treating the whole person, functional medicine promotes comprehensive healing and optimal well-being.

We prioritize patient-centered care, emphasizing collaboration, education, and empowerment. Patients are actively involved in their treatment plans, with practitioners guiding and supporting them throughout their healing journey.

This partnership fosters a sense of ownership and motivation, leading to more sustainable and successful outcomes.

If you have severe or worsening abdominal pain, persistent vomiting, blood in the stool, black/tarry stools, fever, signs of dehydration, or unintentional weight loss, seek urgent medical care. Antibiotics and herbal antimicrobials used for SIBO aren’t “one-size-fits-all,” and they can interact with other prescriptions (especially blood thinners, antiarrhythmics, and immunosuppressants).

Prokinetics, laxatives, and acid-suppressing drugs may help or hinder depending on your pattern; don’t start or stop them without guidance. If you’re pregnant or breastfeeding, avoid self-treating SIBO–get clinician support. Nutrition changes (e.g., low-FODMAP) are typically short-term tools; long-term restriction can backfire. Education here is general and not a diagnosis or treatment plan–work with a qualified practitioner.

Bacteria that should mostly live in the large intestine migrate into the small intestine and overgrow. That crowding ferments your food too early, causing gas, bloating, pain, and sometimes diarrhea, constipation, or nutrient shortfalls.

Most commonly with a hydrogen/methane breath test after drinking lactulose or glucose; elevated gases at specific time points support the diagnosis. Small-bowel aspirate culture is rarely done outside specialty centers.

They can look the same. Many people labeled “IBS” actually have SIBO; treating the overgrowth can reduce IBS-type symptoms. Not all IBS is SIBO, so testing matters.

Constipation-predominant cases often involve methane produced by archaea (not bacteria) called intestinal methanogen overgrowth (IMO). It’s tested on the same breath test and often needs a different regimen.

It’s usually controllable but prone to relapse if the root causes (motility issues, adhesions, low stomach acid, medications, foodborne illness aftermath, etc.) aren’t addressed. Many people improve markedly with a stepwise plan.

Diet (e.g., low-FODMAP or targeted carbohydrate reduction) can calm symptoms while you treat, but it doesn’t eradicate overgrowth by itself. Use diet short-term, then broaden as gut function normalizes.

Sometimes. Certain strains help, others worsen bloating–especially in methane-dominant or slow-motility patterns. We individualize choices and may start with motility supports or prebiotic fibers later.

A personalized combo of antimicrobials (pharmaceutical or herbal), motility support, meal spacing, selective supplements, and root-cause work (e.g., post-infectious IBS, hypothyroid, adhesions, EDS, diabetes, PPI overuse).

Many notice symptom relief within 2–6 weeks; preventing relapse (8–16+ weeks) hinges on fixing underlying drivers and carefully re-expanding the diet.

If red-flag symptoms are present, if you’ve relapsed repeatedly, have significant weight loss or anemia, prior GI surgery/adhesions, inflammatory bowel disease, celiac disease, or complex motility disorders.

You may also want to read about Digestive Disorders, IBS / IBD, Leaky Gut & Food Intolerances,  Chronic Inflammation, and Hormonal Imbalances.