New Research Examines Blueberries’ Effect on Cardiometabolic Health in Adults with Metabolic Syndrome
A new research study published in the American Journal of Clinical Nutrition found that participants with metabolic syndrome who consumed the equivalent of one cup of fresh blueberries, given as 26g of freeze-dried blueberries, showed clinically relevant changes in measures of heart health. The study, “Blueberries improve biomarkers of cardiometabolic function in participants with metabolic syndrome – results from a 6-month, double blind, randomized controlled trial,” was conducted at the University of East Anglia in the United Kingdom in collaboration with Harvard T.H. Chan School of Public Health and other UK institutions.
The study found that intake of the equivalent of one US cup per day of blueberries (given as 26g freeze-dried blueberries) resulted in clinically significant improvements in heart health measures, particularly markers of vascular function (blood flow and elasticity of the blood vessels by measuring endothelial function and arterial stiffness). Improved endothelial function and reduced arterial stiffness are associated with a reduced risk of cardiovascular events such as heart attack and stroke.iImportantly, the observed increases in nitric oxide bioactivity in the blood provided a potential mechanism for the endothelial function benefits observed.