What is IBS?
Symptoms with deeper roots
IBS (Irritable Bowel Syndrome) is often described as a diagnosis, but in reality, it’s better understood as a collection of symptoms—including bloating, abdominal discomfort, constipation, diarrhea, or a mix of both—without a clear structural cause.
In many cases, IBS is an umbrella term that covers a range of underlying issues that haven’t yet been fully identified. These can include things like intestinal permeability (“leaky gut”), imbalances in gut bacteria (dysbiosis), fungal overgrowth, and even gut dysfunction driven by chronic stress or past illness.
One of the most common and often overlooked drivers of IBS symptoms is SIBO (Small Intestinal Bacterial Overgrowth)—a condition where bacteria accumulate in the small intestine and interfere with normal digestion.
Rather than being something you simply have to live with, IBS is often a sign that something deeper is going on in the gut. With the right investigation and approach, these root causes can be identified and treated—leading to meaningful, long-term relief.
Then What Is SIBO?
The most common root cause of IBS
SIBO (Small Intestinal Bacterial Overgrowth) occurs when bacteria that are normally found in the large intestine begin to grow in the small intestine, where they don’t belong. This disrupts normal digestion and can lead to symptoms like bloating (often shortly after eating), gas, abdominal discomfort, constipation, diarrhea, or both.
As these bacteria interact with the food you eat, they produce gases that can interfere with nutrient absorption, slow or alter gut motility, and contribute to ongoing irritation in the digestive tract. Over time, this can also impact energy levels, mood, and overall health.
SIBO doesn’t happen randomly—it’s usually the result of underlying issues such as slowed gut motility, chronic stress, previous infections, or other imbalances in the digestive system that allow bacteria to accumulate where they shouldn’t.
The good news is that SIBO can be tested using a simple breath test, and with the right approach, it can be effectively treated. By identifying the pattern of overgrowth and addressing the root causes, it’s possible to significantly reduce symptoms and restore normal digestive function.
How is SIBO Found?
A clear answer through testing
SIBO is diagnosed through a combination of your symptom picture and targeted testing—not by symptoms alone, and not by unrelated lab work.
The primary tool for diagnosis is a SIBO breath test, which measures gases (hydrogen and methane) produced by bacteria in the small intestine. After drinking a small amount of a test solution (most commonly lactulose, the preferred substrate), breath samples are collected over a few hours. If bacteria are present in the small intestine, they ferment the lactulose and produce measurable gases that appear earlier than they should.
When performed properly, this test is highly reliable, with about 92% reproducibility, making it a useful and clinically validated tool when interpreted in the context of your symptoms.
It’s important to note that many other common tests—such as stool tests (including GI-MAP), organic acid tests (OAT), or even procedures like colonoscopy—cannot diagnose SIBO. While they may provide helpful information about other aspects of gut health, they do not assess bacterial activity in the small intestine.
For that reason, accurate diagnosis relies on combining the right test with the right clinical context, ensuring that treatment is targeted, effective, and not based on guesswork.
Can SIBO Be Treated?
There is a path forward
Yes—SIBO can be treated, and many people experience meaningful improvement when the right approach is taken.
That said, it’s rarely as simple as a quick fix. SIBO often develops for a reason, and lasting results usually come from addressing both the overgrowth itself and the underlying factors that allowed it to develop in the first place.
This is the foundation of my SIBO Smart method—a structured, 3-phase approach that focuses on preparing the gut, targeting the overgrowth, and supporting long-term balance. Each step is designed to improve effectiveness and reduce the likelihood of relapse.
While every case is different, both research and clinical experience show that with a thoughtful, individualized plan, many people see significant relief in symptoms like bloating, bowel irregularity, and food sensitivities—even after struggling for years.
If you’ve been dealing with ongoing digestive symptoms, there is real reason to feel hopeful. With the right guidance, your gut can improve.
What if it’s not SIBO?
Other causes matter too
SIBO is the most common cause of chronic symptoms like bloating, IBS, and food sensitivities—but it’s not the only one. While many people fall into this category, a significant number don’t—and that matters.
If your testing doesn’t point to SIBO, it doesn’t mean there’s no answer. It simply means we need to look deeper.
Digestive symptoms can also be driven by other issues like large intestine dysbiosis, gut lining dysfunction, fungal overgrowth, or stress-related gut changes. These are all things I regularly assess and treat as part of a comprehensive, root-cause approach.
The goal is always the same: to understand what’s actually driving your symptoms—and create a plan that addresses it directly, not just manage it.