This is a randomized clinical trial aimed at postmenopausal women aged 50 to 64 years old selected in urban primary care centers of two centers (Spain). Its objective is to evaluate the effects of the additional intake of high cocoa content chocolate on blood pressure, vascular function, body composition, quality of life and cognitive performance.

• Objective: To assess the effect at 6 months of the additional intake of 10 g/day of high cocoa content chocolate for 6 months on blood pressure, vascular function, body composition, quality of life and cognitive performance in postmenopausal women.
• Design and setting: A randomized clinical trial of two parallel groups. Population: 140 postmenopausal women, 50 to 64 aged will be included, selected by consecutive sampling in two primary care centers.
• Measurements and intervention: Vascular function (blood pressure, augmentation index and Cardio-Ankle Vascular Index), body composition and health-related quality of life will be evaluated. The intervention group will receive a daily supplement of high cocoa content chocolate for 6 months.

Inclusion Criteria:

• Women in postmenopausal period defined as 12 consecutive months of amenorrhea.

Exclusion Criteria:

• Older than 65 years.
• Cardiovascular disease (acute myocardial infarction, stroke).
• Arterial hypertension on treatment.
• Diabetes mellitus.
• Dyslipidemia (total cholesterol >250 mg/dL or in lipid-lowering therapy).
• Clinically demonstrable neurological and/or neuropsychological disorders.
• Hormone replacement therapy.
• Allergy and/or intolerance to cocoa or any of the components of the supplement.
• Hypocaloric diet.
• Any other circumstance that the investigators consider could interfere with the study procedures.