The Influence of Red Grape Cells on Blood Pressure Vascular Function in People With Hypertension

Inclusion Criteria: * Age 35-70 * BMI \< 40.0 kg/m2 * Blood pressure: SYS. ≤154 mmHg, DIA. ≤93 mmHg. Exclusion Criteria: * Breastfeeding or pregnancy. * Milk allergy - the substance may contain traces of milk protein (casein). * Taking anti-hypertensive medications. * Taking antioxidant food supplements, excluding probiotic agents and fibers (taken for less than two weeks before beginning the study). * Subjects suffering from any of the following conditions: cardiovascular disorders, renal disorders, intestinal disorders, hepatic disease, malignant or autoimmune diseases or other metabolic diseases. * A subject whose baseline blood tests indicate abnormalities in hepatic or renal function, thyroid function or blood count. * Unusual eating habits. * The subject is in the process of active weight loss / gain. * Addiction to drugs / alcohol. * Medically documented psychiatric problems or neurological disorders. * Smokers. (Subjects who quit smoking more than two years ago may be included in the study). * Systolic blood pressure above 154 mmHg. * Diastolic blood pressure above 93 mmHg. * Taking phosphodiesterase 5 inhibitors for the treatment of erectile dysfunction (Viagra, Cialis, etc.).