Oral supplements of flavonoids commonly found in onions may enhance the function of the lining of blood vessels. A daily dose of quercetin led to improvements in endothelial function, a key marker of cardiovascular health, according to results of a study published in the October issue of American Journal of Clinical Nutrition. “Numerous studies have shown that acute and repetitive consumption of flavonoid-rich foods for up to four weeks can improve endothelial function in both subjects with coronary artery disease and healthy volunteers,” wrote the researchers, led by Professor Kevin Croft fro the University of Western Australia. The researchers report a significant increase in Nitric Oxide when the subjects consumed quercetin. Moreover, quercetin was associated with significant reductions in ET-1 blood and urine levels.
Bonnie - I have prescribed quercetin for over two decades for any form of inflammation. It is aa wonderful, safe subbstance.
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