Giving older mice back their youthful gut microbes appeared to reverse several hallmarks of aging and completely prevented liver cancer in the study. Credit: Shutterstock Scientists may have discovered a powerful new link between the gut microbiome, aging, and liver cancer. New research presented at Digestive Disease Week® (DDW) 2026 suggests that restoring gut bacteria to a more youthful state could help protect the liver, reduce age related damage, and potentially lower cancer risk. The