Understanding Irritable Bowel Syndrome (IBS)

Irritable Bowel Syndrome (IBS) is the most common gastrointestinal disorder, affecting 20% of Australians—men, women, and children. Despite its prevalence, many people never seek medical advice. Symptoms often include abdominal discomfort, bloating, gas, and changes in bowel habits like diarrhea or constipation. Less common symptoms can be nausea, fatigue, or unexplained weight loss. Managing IBS can be challenging, but seeking a proper diagnosis and treatment plan is key to better symptom control.

Breath tests for diagnosing IBS-Related conditions

If you’re struggling with IBS and frustrated with treatments that don’t provide lasting relief, you’re not alone. Research shows that many IBS symptoms result from sugar malabsorption or small intestinal bacterial overgrowth (SIBO). These can be accurately diagnosed using hydrogen and methane breath tests.

FODMAP Intolerance and Its Impact on IBS

FODMAPs are types of sugars that are poorly absorbed and rapidly fermented in the gut, leading to IBS symptoms. Various breath tests can help determine intolerance to specific FODMAPs:

  • Lactose breath test for lactose intolerance
  • Fructose breath test for fructose intolerance
  • Sorbitol and Mannitol breath tests for sugar alcohol intolerance
  • Sucrose breath test for sucrose intolerance

Small Intestinal Bacterial Overgrowth (SIBO) and Its Role in IBS

SIBO occurs when bacteria overgrow in the small intestine, leading to bloating and other IBS symptoms. Breath tests using lactulose and glucose can help diagnose SIBO.

Why consider Breath Testing for IBS?

IBS is a complex condition, and while there’s no cure, identifying triggers can greatly improve symptoms. Around 90% of people with IBS report food as a major trigger, yet medically diagnosed food allergies are rare. FODMAP intolerance and SIBO are often the underlying causes of IBS symptoms but are frequently undiagnosed.

Most IBS sufferers rely on over-the-counter medications or prescription drugs for short-term relief, which may come with side effects. Elimination diets can help, but they aren’t always effective or practical and can lead to nutritional imbalances. Breath tests offer a more accurate way to identify food intolerances and guide treatment.

How breath tests work

When certain sugars (like lactose or fructose) aren’t fully absorbed in the small intestine, they travel to the colon, where bacteria ferment them, producing hydrogen or methane gas. These gases enter the bloodstream and are exhaled, allowing detection through breath tests. High levels of these gases indicate intolerance or bacterial overgrowth.

Testing procedure and availability

Breath testing is simple, painless, and non-invasive. Tests are available at clinics across Australia, and mail-order kits can be ordered for those unable to visit in person. No doctor’s referral is needed—any health professional can request the test, or you can refer yourself.

Tests take up to 3 hours, and only one test can be performed per day. All testing is conducted with high standards in accredited laboratories, ensuring accurate results.