Mulberry Effects on Gut Bacteria and Metabolism

Recent scientific findings published in Biomolecules on September 11, 2026, by researchers from Wroclaw Medical University reveal that mulberry preparations significantly alter gut microbiota composition and influence metabolic health. The study emphasizes that the biological effects depend heavily on the plant species, utilized parts such as leaves or fruit, and specific processing methods like drying or extraction. The researchers aim to demonstrate that bioactive compounds including polyphenols, polysaccharides, and 1-deoxynojirimycin (DNJ) interact synergistically with intestinal bacteria to produce short-chain fatty acids like acetate, propionate, and butyrate. These microbial shifts are directly correlated with improvements in glucose regulation and lipid metabolism in animal models. The essence of the review highlights that combined fractions of polyphenols and polysaccharides yield superior prebiotic benefits compared to isolated components. Furthermore, microbiota transplantation experiments confirmed that altered gut bacterial communities successfully transmit metabolic improvements to recipient subjects, proving the mechanism of action. Practical applications indicate that future dietary supplements and therapeutic interventions should focus on carefully designed, standardized mulberry formulas rather than universal applications. However, authors caution that human clinical trials are urgently required to validate these promising laboratory and animal observations before definitive health recommendations can be established.