The purpose of this study is to test the effects of a one time dose and 7-days of inorganic nitrate (supplied in the form of beetroot juice) on blood vessel function and resting blood pressure in healthy, postmenopausal women. Participants will drink beetroot juice and a placebo juice on separate visits where blood pressure and blood vessel function will be measured.
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Macro-vascular reactivity
Timeframe: These measurements will take place before and after a ischemia-reperfusion injury (20 minutes inflation, 20 minutes deflation) induced in the upper arm to assess change in macro-vascular reactivity
Micro-vascular reactivity
Timeframe: These measurements will take place before and after a ischemia-reperfusion injury (20 minutes inflation, 20 minutes deflation) induced in the upper arm to assess change in micro-vascular reactivity