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The Effects of Quercetin Supplementation on Blood Pressure - Meta-Analysis

Popiolek-Kalisz J, Fornal E

Current problems in cardiology, 2022

841 participants · 49 citations

Abstract

INTRODUCTION

The effects of quercetin supplementation on blood pressure (BP) remain unclear. The aim of this meta-analysis is to summarize data focused on quercetin impact on systolic BP (SBP) and diastolic BP (DBP).

METHODS

Medline, EMBASE and Web of Science databases were searched to identify randomized controlled trials that assessed the impact of quercetin on BP until May 2022. A random-effects model was used for data analysis. Subgroup analysis was performed to explore the effects in (pre)hypertensive and normotensive adults.

RESULTS

Ten trials (841 participants in total) were included into the analysis. The results showed that quercetin supplementation significantly decreased SBP in the mixed population (MD: -2.38mmHg; 95% CI: -3.80 to -0.96; p=001) and in the normotensive subgroup (MD: -1.82mmHg; 95% CI: -2.43 to -1.20; p<0.0001) and DBP in the (pre)hypertensive subgroup (MD: -3.14mmHg; 95% CI: -4.44 to -1.84; p<0.00001).

CONCLUSIONS

Quercetin supplementation decreases BP in normotensive and (pre)hypertensive patients.

How strong is the evidence?

Evidence Hub reads this as a meta-analysis, done in people. Its evidence level is 1 of 5 (Highest · pooled evidence). Pooled evidence from several studies sits at the top of the evidence pyramid. Reported size: 841 participants or records.

How the five levels of evidence work. The level is assigned automatically from the abstract and can be wrong, so check the paper.

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