The purpose of this trial is to investigate the effect of dairy products on the so called metabolic syndrome. Metabolic syndrome is a cluster of risk factors, such as high blood pressure and high cholesterol, for the development of diabetes and heart disease. Participants will be randomly assigned to either eat a portion of a Norwegian traditional cheese which is high in protein and low in fat (group 1), or eat a slightly higher than normal intake of regular Gouda-type cheese (group 2), or to limit their intake of cheese (group 3).