Researchers from Wroclaw Medical University have found that natural compounds in mulberry leaves and fruit may significantly alter the composition of gut bacteria, potentially supporting intestinal health and influencing metabolic processes. The study, published in September 2026, highlights how bioactive substances in mulberry interact with the digestive system to promote a balanced microbiome, which could have broader implications for managing metabolic conditions.
The research indicates that mulberry-derived compounds, particularly flavonoids and polysaccharides, act as prebiotics that encourage the growth of beneficial gut bacteria while suppressing harmful strains. Laboratory analyses showed increased microbial diversity in test models exposed to mulberry extracts, a key marker of gut health. These shifts were linked to improved intestinal barrier function and reduced inflammation, suggesting a protective role for mulberry in digestive wellness. Scientists noted that the effects were dose-dependent, with higher concentrations producing more pronounced changes in bacterial populations.
Beyond gut health, the altered microbiome appeared to influence metabolic pathways associated with energy processing and fat storage. Participants in the study who consumed mulberry supplements showed modest improvements in glucose tolerance and lipid profiles, though researchers cautioned that these outcomes were secondary effects stemming from microbial changes rather than direct metabolic action. The team emphasized that mulberry is not a treatment for metabolic disorders but could serve as a dietary adjunct to support existing therapies when combined with a balanced diet and lifestyle.
What parts of the mulberry plant were studied? The research focused on both leaves and fruit, which contain high levels of bioactive compounds like flavonoids and polysaccharides believed to drive the observed effects on gut bacteria.
How long did the study last? The controlled trial spanned 12 weeks, during which participants received standardized mulberry extract while maintaining their regular diets to isolate the supplement’s impact.
Are there any side effects associated with mulberry consumption? No adverse effects were reported in the study; mulberry is generally considered safe when consumed in food amounts, though concentrated supplements should be used under medical guidance.