Dairy Intervention in People With Obesity

Obesity is associated with increased morbidity and mortality, but weight reduction is difficult to achieve. In this randomized controlled trial we will include 120 obese subjects. Subjects will be allocated to one of the 3 diet types (minus 500 kcal / d): * Yoghurt diet: 500 g low-fat yogurt / d, about 1000-1100 mg calcium / d, * Milk product diet: 500 g of low-fat milk or buttermilk / d, about 1000-1100 mg calcium / d * Standard diet: 500 g soy yogurt / d, about 500 mg calcium / d Primary endpoint is the change in fat mass (baseline vs. 12 weeks), secondary endpoints are metabolic and endocrine parameters, gut microbiome, quality of life, hunger and satiety.