Inflammatory bowel disease (IBD) causes inflammation and damage to the intestinal lining, affecting millions globally. The gut barrier allows nutrients to enter the body while blocking harmful bacteria, but in IBD patients, the barrier breaks down, leading to inflammation, pain and long-term complications.

A 2026 study on mice published in Nature Communications examined urolithin A (UroA), a microbial metabolite produced by digesting foods like pomegranates, walnuts and berries. Researchers discovered that UroA activates a protective pathway in the intestine, potentially preserving gut health and reducing tissue damage. In human tissue samples from IBD patients, UroA activated the same protective pathway observed in the mice experiments. The findings suggest that future IBD treatments might focus on the body’s natural protective pathways instead of broadly suppressing the immune system.