WHO (World Health Organization) is defined as obesity an abnormal, excessive amount of fat accumulation in the form and rate that causes diseases in the body. Morbid Obesity is defined as severe obesity, which is a serious threat to life due to deadly problems. Body Mass Index (BMI) above 40 is considered as morbid obese.

Fat ratio in the body is 25-30% in females and 20% in males.

Even if there is no additional disease for obese patients with BMI = 40 kg / m2 and above, or obese patients with BMI = 35-40 kg / m2 with at least one of the additional disease as hypertension, cardiovascular diseases, type 2 diabetes, hyperlipidemia, sleep apnea syndrome and etc. should start to get surgical treatment immediately.