INTRODUCTION- Various behavioral therapies like nutritional therapy, physical activity and cognitive behavioral therapy that basically target lifestyle for treating obesity or overweight have always been used but the results vary depending on the person's determination , willingness and most of the times end up with unsatisfactory results. The short term as well as long-term outcomes of bariatric surgery lead to improvement in glucose metabolism, insulin resistance and quality of life . OBJECTIVES- To study the effect of laparoscopic sleeve gastrectomy on BMI and metabolic syndrome ( type II diabetes mellitus , hypertension , hyperlipidemia ) . METHODS- This is a prospective study, undertaken in mahatma gandhi medical college and hospital, jaipur from july 2017 to september 2019 after taking clearance from institution ethics committee. Total 30 morbidly obese patients with metabolic syndrome were included in the study after taking informed consent. CONCLUSION- Laparoscopic sleeve gastrectomy has emerged as a low morbidity bariatric surgical procedure that leads to effective weight loss and control of co-morbid diseases. Most patients with dm, hypertension and dyslipidemia showed resolution or improvement after LSG. Therefore, for morbidly obese patient in the short term, LSG is very safe and effective procedure without any signicant morbidity or mortality