New fiber supplement improves gut health in IBS patients without worsening symptoms

A fiber blend that helps IBS without the usual gut backlash

Researchers at Edith Cowan University (ECU) have developed a fiber supplement called ur gut® that may offer a new way to manage irritable bowel syndrome (IBS) — one of the world's most common digestive disorders, affecting roughly 11% of Australians. The supplement combines resistant starch and psyllium husk, and in a randomized, double-blind controlled trial, it improved gut microbiome composition and reduced gut-related anxiety without worsening hallmark IBS symptoms like bloating, pain, or diarrhea.

The key innovation lies in how the two ingredients interact. Psyllium slows the fermentation of resistant starch, allowing it to travel deeper into the colon before breaking down — producing beneficial compounds while avoiding the gas and discomfort typically associated with fermentable fibers. This makes it compatible with the low-FODMAP diet, a common IBS management strategy that, while effective for symptoms, can deplete beneficial gut bacteria over time.

Key Takeaways

• The supplement reshaped the gut microbiome rapidly — changes researchers described as rarely seen in such a short intervention
• Participants also showed reductions in gut-related anxiety, suggesting benefits beyond the digestive system
• The findings point toward actively rebuilding gut health in IBS, rather than solely avoiding trigger foods

Why it matters: For the millions living with IBS, treatment options have largely focused on symptom suppression. This research suggests it may now be possible to simultaneously manage symptoms and restore gut health — a meaningful shift in how IBS could be approached clinically.