Munich Stars Health Knowledge | Gut Health Series

Munich Stars Health Knowledge｜Gut Health Series

Foreword

There are situations where taking probiotics not only doesn't help but can actually worsen symptoms.

This isn't a problem with probiotics themselves, but rather choosing the wrong time and approach. Leaky Gut Syndrome and SIBO (Small Intestinal Bacterial Overgrowth) are two gut issues that often appear together but require completely different treatment strategies.

In the European functional medicine system, differentiating and assessing these two conditions is a standard procedure; however, in the mainstream medical environment in Asia, most people are almost completely unaware of SIBO.

This article will start by explaining the mechanisms, providing a complete overview of what SIBO is, its relationship with leaky gut syndrome, why probiotics can be counterproductive in certain situations, and the correct repair strategies.

I. What is SIBO?

Normal Gut Microbiota Distribution

Under normal circumstances, the distribution of gut microbiota in the human body is strictly regional:

• Small Intestine: Very few bacteria, less than 10³ CFU per milliliter of intestinal fluid, primarily lactobacilli.
• Large Intestine: A vast number of bacteria, as high as 10¹¹–10¹² CFU per milliliter, serving as the main gathering place for gut microbiota.

This distribution has a purpose. The small intestine is the primary site for digestion and absorption, and an excessive amount of bacteria can interfere with nutrient absorption and produce large amounts of gas and toxins.

Definition and Mechanism of SIBO

SIBO refers to the abnormal proliferation of bacteria that typically reside in the large intestine within the small intestine, leading to a bacterial count in the small intestine exceeding the normal standard (> 10⁵ CFU per milliliter of intestinal fluid).

These excessively proliferating bacteria ferment undigested carbohydrates in the small intestine, producing large amounts of hydrogen (H₂) and methane (CH₄). This is the direct cause of SIBO's most typical symptom – severe bloating 30–90 minutes after eating.

Main Symptoms of SIBO

Digestive System Symptoms (most obvious):

• Severe bloating after meals; stomach looks like it's pregnant, especially noticeable within 30–90 minutes.
• Abdominal pain, abdominal cramps.
• Alternating diarrhea and constipation.
• Frequent belching and flatulence.

Systemic Symptoms:

• Brain fog – difficulty concentrating, memory loss.
• Chronic fatigue, low energy.
• Skin problems – hives, eczema, rosacea.

Nutrient Absorption Issues:

• Unexplained weight loss.
• Iron deficiency anemia, vitamin B12 deficiency.
• Steatorrhea (oily, floating stools).

II. The Vicious Cycle of SIBO and Leaky Gut Syndrome

SIBO and leaky gut syndrome often occur simultaneously, creating a vicious cycle where each exacerbates the other:

• SIBO → Leaky Gut: Toxins and gases produced by SIBO directly damage the small intestinal mucosa and tight junction proteins, leading to increased intestinal permeability and forming a leaky gut.
• Leaky Gut → SIBO: Once the intestinal barrier is compromised, intestinal motility decreases, making the intestinal environment more conducive to bacterial overgrowth in the small intestine, making SIBO harder to eradicate.

This vicious cycle means that: addressing only one condition will continually hinder the healing process of the other. Many people try to repair leaky gut with little success, one reason being the presence of undiagnosed SIBO.

III. Key Distinctions Between SIBO and Leaky Gut Syndrome

While their symptoms highly overlap, several key differences can help distinguish them:

IV. The Probiotic Trap During SIBO

This is where most people go wrong.

The core problem of SIBO is an already excessive amount of bacteria in the small intestine. At this point, supplementing with probiotics is like feeding the already overgrown bacterial colonies in the small intestine, which may worsen bloating and abdominal discomfort.

In the clinical practice of functional medicine in Germany, the SIBO treatment process is as follows:

• Step 1: Confirm SIBO – Hydrogen Breath Test.
• Step 2: Treat SIBO – Antimicrobial herbal therapy or specific antibiotics, combined with a low FODMAP diet.
• Step 3: Repair Leaky Gut – Probiotics, inulin, dietary adjustments.

If the order is wrong, the repair effect will be greatly diminished. In Taiwan and mainland China, the diagnosis rate of SIBO is extremely low, and most people directly supplement probiotics without knowing they have SIBO – this is one of the reasons why many people report that "probiotics don't work" or even "cause more bloating."

V. Germany vs. Asia: The Gap in SIBO Diagnosis and Treatment

VI. After Confirming Leaky Gut: How to Choose Probiotics Correctly

Once leaky gut (not combined with SIBO) is confirmed, probiotics are one of the core tools for repairing the intestinal barrier. Good bacteria promote the expression of tight junction proteins by secreting short-chain fatty acids (especially butyrate), repairing the intestinal barrier, and regulating local immune responses.

Key criteria for choosing probiotics:

• Strain Diversity: A multi-strain formula containing both Bifidobacterium and Lactobacillus, working synergistically in different parts of the gut.
• Prebiotic Pairing: Inulin selectively promotes the growth of Bifidobacterium, allowing the introduced bacteria to truly colonize the gut. Without inulin, the effect is greatly reduced.
• Live Bacteria Protection Technology: Unprotected probiotics have a survival rate of only about 10–25% in the stomach acid (pH 1–1.5) environment. Microencapsulation technology can increase the survival rate to 95–100% and maintain stability for over 24 months.
• Effective Dose: According to WHO/FAO (2001) recommendations, a daily intake of at least 1 billion CFU of live bacteria is required, and it must be ensured that the live bacteria actually reach the intestine to be effective.
• During Antibiotic Use: Probiotics should be taken at least two hours apart from antibiotics.

VII. Dietary Considerations for SIBO and Leaky Gut

Dietary principles during SIBO:

• Follow a low FODMAP diet, limiting fermentable carbohydrates (onions, garlic, legumes, dairy products).
• Temporarily avoid fermented foods – kimchi, sauerkraut, yogurt may worsen bloating.
• Limit refined sugar – reduce food sources for bad bacteria.

Dietary principles during leaky gut repair:

• Increase dietary fiber intake to 25–38 grams daily.
• Actively consume fermented foods – kimchi, sauerkraut, miso, kefir.
• Choose organic, non-GMO produce to reduce exposure to glyphosate pesticides.
• Ensure 7–9 hours of high-quality sleep daily and manage chronic stress.

VIII、About Lactobact Forte

If you're looking for a product that integrates the three aforementioned aspects (amino acids, mucosal nutrients, and strain combination), Lactobact Forte is one of the few formulations on the market that covers all three elements simultaneously:

●        Contains L-Glutamine, which helps support the nutrients needed for intestinal cell renewal.

●        Contains Biotin, which helps maintain normal mucosal health.

●        Contains 5 specially selected strains (Bifidobacterium, Lactobacillus, Enterococcus), using microencapsulation technology to ensure live bacteria can effectively pass through stomach acid and bile, reaching the intestines to exert their effects.

Lactobact Forte originates from German pharmaceutical quality standards, making it suitable as a nutritional supplement for daily intestinal barrier maintenance.

Conclusion

SIBO and leaky gut syndrome are not the same problem, but they often intertwine. In the European functional medicine system, distinguishing between the two is a fundamental skill for gut health assessment; however, in Asia, most people are not even aware of SIBO's existence.

When the direction is right, probiotics can truly be effective. When the direction is wrong, no matter how many you take, it's futile – and can even be counterproductive.

Further Reading

Previous article: The Complete Guide to Leaky Gut Syndrome – Poor Immunity, Brain Fog, Skin Problems: The Root Cause Might Be in Your Gut

Next article: Can Leaky Gut Be Diagnosed? Why Your Doctor Might Not Know About It

References

1. Pimentel M, et al. (2020). ACG Clinical Guideline: Small Intestinal Bacterial Overgrowth. American Journal of Gastroenterology, 115(2), 165-178.
2. Fasano A. (2012). Leaky gut and autoimmune diseases. Clinical Reviews in Allergy & Immunology, 42(1), 71-78.
3. Quigley EMM. (2017). Small intestinal bacterial overgrowth. Current Opinion in Gastroenterology, 33(3), 143-147.
4. Cani PD, et al. (2007). Metabolic endotoxemia initiates obesity and insulin resistance. Diabetes, 56(7), 1761-1772.
5. WHO/FAO. (2001). Health and Nutritional Properties of Probiotics in Food.

The content of this article is for educational reference only and does not constitute medical diagnosis or treatment advice. If you have health concerns, please consult a healthcare professional with expertise in functional medicine or gastroenterology.