Our way of life has led to a massive increase in the prevalence of obesity in adults and children. Therefore diabetes type 2 has also become a pediatric disease. Therapy consists above all of implementing modifications of life style such as a healthy diet and regular physical activity in order to achieve a decrease in body weight. If these measurements prove to be insufficient, medical treatments are introduced, either using metformine or insulin. The screening and treatment of complications (retinopathy, nephropathy) and comorbidities (arterial hypertension, dyslipidemia) will help to decrease mortality on the long haul.