Obesity is a leading preventable cause of mortality and morbidity worldwide, with increasing prevalence in adults as well as in children [1]. Authorities often view obesity as one of the most serious public health problems of the 21st century. Treating obesity is aimed at decreasing the amount of excessive adipose tissue by changing the balance between intake and expenditure of energy, via physical exercise, diet control or both, under the assumption that if there are no hormonal disorders present, the obesity is caused by calorie consumption that is not counterbalanced by sufficient calorie burn.

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