 At the beginning of the run-in period and at the beginning and the end of the intervention period the endothelial function of the brachial artery will be assessed using flow-mediated dilation FMD nitro-mediated dilation NMD methods and blood samples will be collected to analyse blood lipids, inflammation and coagulation parameters in the blood. Nutrition councils will be passed at the beginning of the run-in period and then every 2 weeks. In the weeks between, the volunteers are contacted by phone. 