Low habitual intake of low-dose dark chocolate (6 g/day) has been shown to have a beneficial effect on arterial blood pressure in one previous study. The trial will assess if ingestion of a higher but still moderate dose (25 g/day) over 3 months will have a more pronounced effect. The population will consist of cardiovascular high-risk patients only (who will potentially benefit most from blood-pressure lowering).

Inclusion Criteria:

• age > 18 years
• mean ambulatory blood pressure 125-146 mmHg and/or 80-89 mmHg
• high cardiovascular risk profile (one or more of the following: CAD, PAD, carotid stenosis, diabetes)
• informed consent

Exclusion Criteria:

• habituary intake of dark chocolate or cocoa products
• mean ambulatory blood pressure 147 mmHg or greater and/or 90 mmHg or greater
• pregnancy
• uncontrolled diabetes
• severe comorbidity
• change in blood pressure medication within last 6 weeks
• participation in another trial