Nutrition
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Randomized Controlled Trial
Effect of onion peel extract on endothelial function and endothelial progenitor cells in overweight and obese individuals.
Acute or chronic intake of polyphenol-rich foods has been reported to improve endothelial function. Quercetin, found abundantly in onion, is a potent antioxidant flavonoid. The aim of this study was to investigate whether consumption of onion peel extract (OPE) improves endothelial function in healthy overweight and obese individuals. ⋯ Medium-term administration of OPE an improvement in FMD and circulating EPCs.