Investigating the Acute Effects of Blueberry (Poly)Phenols on Vascular Function and Cognition in Healthy Individuals.

Inclusion criteria: * Healthy men and women aged 8-80 years old * Are able to understand the nature of the study * Able and willing to give signed written informed consent with the addition of a parent/carer for the consent of children under 16. * Are willing to maintain their normal eating/drinking habits and exercise habits to avoid changes in body weight over the duration of the study. Exclusion Criteria: * Manifest cardiovascular diseases including coronary artery disease, cerebrovascular disease and peripheral artery disease. * Hypertensive, as defined as SBP superior or equal to 140 mmHg or DBP superior or equal to 90 mmHg. * Obese participants, defined as BMI superior or equal to 30. * Diabetes mellitus and metabolic syndrome. * Acute inflammation, terminal renal failure or malignancies. * Abnormal heart rhythm (lower or higher than 60-100 bpm). * Allergies to berries or another significant food allergy. * Subjects under medication or on vitamin/dietary supplements (within 2 weeks of baseline). * Subjects who have lost more than 10% of their weight in the past 6 months or are currently on a diet. * Subjects who reported participant in another study within one month before the study starts. * Subjects who smoke cigarettes. * MCI or dyslexic or unable to complete the cognitive function tasks for any reason such as visual impairments. * Subjects who require chronic antimicrobial or antiviral treatment. * Subjects with unstable psychological condition. * Subjects with history of cancer, myocardial infarction, cerebrovascular incident. * 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.