The metabolic syndrome is a group of metabolic disorders, namely obesity, glucose intolerance, hypertension and hypercholesterolemia. Several epidemiological studies have indicated that the consumption of dairy products, especially low-fat products, was inversely associated with body mass index (BMI), blood pressure, plasma lipids, insulin resistance and type-2 diabetes. Many dairy components may contribute to these beneficial effects. Although there is a certain focus on calcium in literature, it has not been cleared up until now which component(s) of milk and dairy products contribute to the positive effects. Whey and whey protein derived peptides have been shown to have a hypotensive effect. Positive effect of the consumption of dairy products on coronary heart disease and impaired glucose tolerance, needs further confirmation.