Intake of 3 portions of alpine dairy products made from milk of cows grazing in subalpine to alpine regions in the Swiss alps in Val Müstair (GR) (one portion equals 2 dl milk, 150-200 g yoghurt, quark, cottage cheese, other dairy products, 30g hard cheese, 60g soft cheese) during the 6-week intervention period. Every dairy product intake will be reported into the participants' food log. Participants will be instructed not to change their diet (with the exception of dairy products), lifestyle and physical activity during the study.

Intake of 3 portions of standard dairy products made from milk of cows grazing in lower altitudes, found in local food stores, thus avoiding alpine dairy products during the 6-week intervention period. There are no other restrictions, all dairy products are considered equivalent. Every dairy product intake will be reported into the participants' food log. The participants will be instructed not to change their diet (with the exception of dairy products), lifestyle and physical activity during the study.

The intervention group will be instructed to eat three portions of alpine dairy products daily. The proposed three portions represent an estimated mean consummation in the study population, taking into consideration the national statistics.

Measure of LDL-cholesterol in mmol/L

Measures in mmol/L