Bloating, Constipation, Diarrhea: Is It SIBO?

Do you often struggle with gas, bloating, belching, reflux, constipation, or diarrhea? These common gastrointestinal issues may be more than just temporary discomfort—they could signal a condition known as Small Intestinal Bacterial Overgrowth (SIBO). SIBO occurs when there’s an excess of bacteria in your small intestine, a surprisingly common issue affecting roughly 16.8% of the U.S. population—nearly one in five people.

If you’ve been diagnosed with Irritable Bowel Syndrome (IBS), the link between SIBO and your symptoms becomes even more important. Research shows that 84% of those with IBS also test positive for SIBO, yet many GI specialists do not routinely test for it. Testing and treating SIBO can dramatically improve IBS symptoms and support gut healing.

Understanding SIBO: The Basics

In a healthy gut, most bacteria are found in the large intestine (colon), where they help break down undigested fiber, produce essential vitamins, and create anti-inflammatory compounds. The small intestine, in contrast, should contain only minimal bacteria, primarily beneficial strains like Lactobacillus and Enterococcus. However, when bacteria from the colon “back-wash” into the small intestine, it can lead to SIBO.

This bacterial overgrowth in the small intestine causes stagnation and fermentation, resulting in a buildup of bacterial byproducts. This process leads to gas, bloating, indigestion, and other uncomfortable symptoms. Depending on the type of bacteria involved, SIBO can produce hydrogen gas (linked to diarrhea), methane gas (often causing constipation), or hydrogen sulfide gas (associated with foul-smelling flatulence).

Key Gastrointestinal Symptoms of SIBO

The hallmark symptom of SIBO is bloating, especially noticeable after meals or toward the end of the day. Many describe their bloated abdomen as a “pregnant SIBO belly,” where the stomach feels overly large compared to food intake. This uncomfortable bloating results from bacteria fermenting in the small intestine, producing gas and expanding the gut.

• Belching and reflux: Fermenting bacteria release gas and fluids, causing these symptoms.
• Constipation: SIBO can damage the nerves that control gut motility, leading to sluggish digestion.
• Diarrhea: In addition to impaired motility, SIBO can interfere with bile production, resulting in loose stools and urgency.
• Gas: Fermentation often leads to flatulence, particularly odorous in cases of hydrogen sulfide-producing bacteria.

SIBO Symptoms Beyond the Gut

While SIBO’s primary effects are digestive, it can also impact other areas. Fatigue, nutrient deficiencies, and even mental fog are common in individuals with SIBO, even those without severe digestive issues. This variability in symptoms makes testing essential for a proper diagnosis.

This blog series will delve deeper into how SIBO is diagnosed and treated, potential complications, and ways to prevent relapse. Our next post will explore the systemic effects of SIBO in more depth.

Take the First Step Toward Relief

Are you tired of feeling weighed down by persistent bloating, constipation, or diarrhea? SIBO may be the hidden cause of your digestive issues. Don’t let digestive discomfort hold you back any longer—order a SIBO breath test today to find out if SIBO is at the root of your symptoms. Once you have your results, book a consultation to discuss personalized treatment options and start your journey toward a healthier, happier gut!

Do you have any questions about SIBO? Don’t hesitate to let me know in the comments below.