Missing Gut Bacteria May Prevent Some People with Coeliac Disease from Fully Benefiting from High-Fibre Supplements or Diets

Many people with Coeliac Disease are advised to eat more fibre to support digestion and manage symptoms, either through diet or prescribed fibre supplements. Research from McMaster University shows that the benefits of that fibre may depend on whether the right bacteria are present in the gut to break it down.

The study, published in Nature Communications, found that people with Coeliac Disease had significantly reduced capacity to metabolise dietary fibre in the small intestine. This is because they lacked a key fibre-degrading bacterial family called Prevotellaceae – organisms that help support gut healing and regulate inflammation.

Visit: https://www.nature.com/articles/s41467-026-70644-4