In Germany, about 5 million people suffer from the metabolic disease diabetes mellitus, of which about 90 % have type 2 diabetes. This diet-related, chronic disease is associated with an increased risk of cardiovascular disease. A change in diet is an important basis in the treatment of diabetes and can improve metabolic control. Certain food ingredients are thought to have a positive effect, such as secondary plant compounds, especially flavanols, which are found in cocoa and dark chocolate, among other things. Some studies suggest that consumption of a flavanol-rich cocoa may reduce the rise in blood glucose levels as well as blood lipids after a meal, which is desirable with regard to diabetic metabolism. Of particular interest is ActicoaTM cocoa powder from cocoa and chocolate manufacturer Barry Callebaut, as a daily serving (2.5 g) provides more than 200 mg of flavanols - significantly more than most commercially available cocoas. The European Food Safety Authority (EFSA) considered it proven that this amount of cocoa flavanols helps maintain the elasticity of blood vessels, contributing to normal blood flow.

The aim is to investigate whether the intake of 2.5 g of ActicoaTM cocoa powder with a diabetes-appropriate breakfast has a positive effect on blood glucose and blood lipids in type 2 diabetics. In addition, it will be tested whether blood pressure is influenced in a favorable way.

The test persons come to the joint practice of Prof. Dr. Ludwig & Dr. Honl on the previously agreed examination dates and bring the 1-day nutrition protocol with them, which they have filled out on the day of the examination. At the beginning of an examination day, blood pressure, height, body weight and waist and hip circumference are measured on an empty stomach, body composition is determined and a blood sample is taken. Subsequently, the subjects are given 5 cocoa-containing or cocoa-free capsules together with a breakfast suitable for diabetes. 2 and 4 hours later, blood pressure is measured again and a blood sample is taken. The time required is thus just under 4.5 hours. After a break of about 2 weeks, the test persons come to the 2nd examination appointment. They receive the same meal and number of capsules as on the 1st examination appointment, as well as the same examinations.