The standard clinical practice at the UOC of Diabetology, Clinical Nutrition and Obesity in Children Pediatrics, ULSS 20 Verona for obese children, consists in the medical examination with assessment of the stage of pubertal development, anthropometric measurements (height, weight, waist circumference), bioimpedance analysis of body composition (TanitaR), dietary anamnesis (food diary) and sport anamnesis (hours per day of video exposure and hours per week of sport). On the next day, the patient performs an oral glucose load curve (OGTT), a blood chemistry sampling for the determination of the lipid profile and ALT. These practices, which are common clinical procedures, are not part the present project.