Research
Hormonal
Quercetin supplementation reduces inflammation and improves metabolic parameters (glucose, lipids) by modulating gut microbiota composition, specifically by increasing beneficial bacteria and reducing pathogenic ones.
Quercetin, found in onions, apples, and tea, may help manage blood sugar and lipids by supporting healthy gut bacteria. Regular dietary intake is a practical way to leverage these effects.
ModerateSupportsMEDIUM confidence
Quercetin... promotes the populations of Bifidobacterium, Bacteroides, Clostridia, and Lactobacillus and significantly suppressed Enterococcus and Fusobacterium... Quercetin improves dyslipidemia, decreased serum blood glucose levels, enhanced insulin levels
Why this rating
Review of animal and human studies; effects are consistent in animal models but variable in humans.
Source
Curcumin, Quercetin, Catechins and Metabolic Diseases: The Role of Gut Microbiota
Umair Shabbir et al. · Nutrients · 2021
DOI 10.3390/nu13010206
narrative_reviewCited 319×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
More from this paper
- Dietary polyphenols (curcumin, quercetin, catechins) ameliorate metabolic disorders by being metabolized by gut microbiota into bioactive phenolic metabolites, which in turn modulate gut microbiota composition to favor beneficial bacteria and reduce pathogenic ones.Moderate
- Curcumin administration improves metabolic health in obese/diabetic models by modulating gut microbiota to reduce inflammation and improve intestinal barrier function.Moderate
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