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Wild Blueberries and Cardiovascular Health in Middle-aged/Older Men and Postmenopausal Women
Sponsor: Colorado State University
Summary
Cardiovascular disease (CVD) is the leading cause of morbidity and mortality worldwide. Aging is the primary risk factor for CVD, in large part due to adverse modifications to the arteries. These modifications include vascular endothelial dysfunction and arterial stiffness. Vascular endothelial dysfunction is an initiating step in atherosclerosis, and is primarily caused by reduced nitric oxide (NO) bioavailability secondary to excessive superoxide-driven oxidative stress and inflammation. Endothelial dysfunction leads to arterial stiffness and the development of hypertension (HTN) which further increases CVD. Greater than 2/3 of the US population has elevated blood pressure or stage 1-HTN. As such, interventions that improve vascular endothelial dysfunction by increasing NO bioavailability and mitigating excessive oxidative stress and inflammation are needed. Blueberries are rich in bioactive compounds including flavonoids, phenolic acids, and pterostilbene. These compounds and their metabolites have been shown to attenuate oxidative stress and inflammation. The primary goal of this study is to assess the efficacy of blueberries to improve reduce blood pressure and improve vascular endothelial dysfunction and arterial stiffness in middle-aged/older men with elevated blood pressure or stage 1-HTN.
Official title: Antihypertensive and Vascular-Protective Effects of Wild Blueberries in Middle-Aged/Older Men and Postmenopausal Women.
Key Details
Gender
MALE
Age Range
45 Years - 70 Years
Study Type
INTERVENTIONAL
Enrollment
58
Start Date
2020-01-01
Completion Date
2025-12-31
Last Updated
2025-11-17
Healthy Volunteers
Yes
Interventions
Blueberry Powder
22 g/day wild blueberry powder
Placebo Powder
22 g/day placebo powder
Locations (1)
Food and Nutrition Clinical Research Laboratory
Fort Collins, Colorado, United States