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Blueberries May Help Improve Endothelial Function and Blood Pressure


Anthocyanins are a group of naturally occurring pigments that are
responsible for the red-blue color of many grains, fruits and vegetables. A new
study has found that the anthocyanins found in blueberries may help improve
endothelial function and blood pressure.





For the study, 40 healthy volunteers were given a drink
containing 200g of blueberries or a control drink containing fiber, minerals,
or vitamins daily for one month. The researchers measured flow-mediated
dilation of the brachial artery and blood pressure at baseline and at the end
of the study. Flow-mediated dilation measures how wide the artery stretches
with increased blood flow.





The participants in the blueberry group had increased
flow-mediated dilation at the end of the study. They also had an average 5mmHg
decrease in systolic blood pressure. No significant changes were seen in the
placebo group.





The study was conducted by researchers from Kings College London.
It was published online ahead of print February 16, 2019 in The
Journals of Gerontology
.


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