Randomized, Double-blind, Controlled Study to Evaluate the Effect of Concord Grape Extract on Vascular Function in Healthy Men and Women

Inclusion Criteria: * Healthy men and women (pre and post-menopausal) aged 18-40 years * Subjects are willing to maintain their normal eating/drinking habits and exercise habits to avoid changes in body weight over the duration of the study * Are able to understand the nature of the study * Able to give signed written informed consent * Signed informed consent form Exclusion Criteria: * Medical history of cardiovascular disease including coronary artery disease, cerebrovascular disease and peripheral artery disease * Hypertensive, as defined as SBP superior or equal to 140 mmHg * Obese participants, defined as BMI superior or equal to 30 kg/m2 * Medical history of diabetes mellitus, metabolic syndrome, terminal renal failure or malignancies * Abnormal heart rhythm (lower or higher than 60-100 bmp) * Allergies to berries or other significant food allergy * Subjects under medication that can affect the cardiovascular system or on vitamin/dietary supplements. * Subjects who have lost more than 10% of their weight in the past 6 months or are currently in a diet * Subjects who reported participant in another study within one month before the study start * Subjects who smoke an irregular amount of cigarettes per day * Pregnant women or planning to become pregnant in the next 6 months * Any reason or condition that in the judgment of the clinical investigator(s) may put the subject at unacceptable risk or that may preclude the subject from understanding or complying with the study's requirements.