IBS or SIBO

Irritable bowel syndrome (IBS) and small intestinal bacterial overgrowth (SIBO) can look almost identical on the surface. Both can cause gas, bloating, abdominal pain, and changes in stool such as constipation, diarrhea, or a mix of both. This overlap can make it confusing to know what is actually driving your symptoms.

What is IBS?

IBS is a functional digestive disorder, which means the digestive tract looks normal on tests, but does not work normally. People with IBS often report cramping, bloating, excess gas, and changes in bowel habits that can swing between loose stools and constipation. Symptoms may be triggered by certain foods, stress, hormonal shifts, or past infections. IBS is diagnosed based on a pattern of symptoms and by ruling out more serious conditions, rather than by a single lab or imaging test.

What is SIBO?

SIBO happens when too many bacteria, or the wrong kinds of bacteria, grow in the small intestine. This area of the gut is normally relatively low in bacteria compared with the large intestine. When overgrowth occurs, bacteria ferment food too early, producing excess gas. This can lead to bloating, abdominal discomfort, belching, and changes in stool consistency. Some people notice that their belly looks and feels much more distended as the day goes on, especially after meals.

Because SIBO can cause gas, bloating, pain, diarrhea, constipation, or both, it often looks very similar to IBS. In fact, some people diagnosed with IBS may actually have underlying SIBO, or a combination of both.

When to explore testing and next steps?

If you are struggling with ongoing digestive symptoms, it is important not to guess. A careful assessment can help determine whether your pattern fits more with IBS, SIBO, or another gut issue. In functional and naturopathic medicine, we may discuss breath testing for SIBO, stool testing, and a detailed review of your history, diet, and triggers to help get to the root cause.

If you have questions about IBS, SIBO, or whether SIBO Breath testing is right for you, we can help you sort through your options. We offer 60-minute in-person or virtual appointments for Alberta residents, as well as free 15-minute discovery calls to discuss your concerns and explore a personalized plan for your digestive health.