Waist to height raito is the major determinator of patients and will be noted in every patient who will fulfil the eligibility criteras defined below and undergo laparoscopic sleeve gastrectomy. demographic data, BMI, body lipid composition, lean body weight also will be noted. all patients will undergo standardized laparoscopic sleeve gastrectomy operation. patients will be follow up during first, third, sixth and one year periods. all parameters noted preoperatively will be measured and noted again. possible statistical difference will be calculated statistically and a cut off value will be seeked.
