The Claim
Polyphenol supplementation is associated with a reduction in the relative abundance of Enterobacteriaceae and Clostridium spp. in the gut microbiota of human participants across a majority of randomized controlled trials.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
Polyphenol supplements are linked to lower levels of certain gut bacteria, including Enterobacteriaceae and Clostridium species, in most human clinical trials.
See the scientific wording
Polyphenol supplementation is associated with reduced relative abundance of potentially pathogenic taxa such as Enterobacteriaceae and Clostridium spp. in a majority of randomized controlled trials, suggesting a selective suppression of pro-inflammatory microbial groups.
Polyphenols that reach the colon feed beneficial bacteria that make butyrate, while directly killing harmful bacteria. The beneficial bacteria grow stronger and produce more butyrate, which strengthens the gut lining. This creates an environment where harmful bacteria cannot thrive, reducing their numbers.
What the research says
1 studyPolyphenol supplements seem to help reduce bad gut bacteria like Enterobacteriaceae and Clostridium, while boosting good bacteria — like a gut cleanup crew.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.