Evidence supports that bariatric or metabolic surgery is more effective than conventional therapy in controlling obesity and its related comorbidities. Although bariatric surgery has been widely practised for many years worldwide, there is still a need to understand the correlation between improving comorbidities associated with morbid obesity and body composition change post-surgery. Amongst the comorbidities, type II diabetes, sleep apnea, hypertension, and hypothyroidism are the significant ones associated with morbid obesity. A disturbed quality of sleep results in daytime sleepiness, cardiac problems, renal problems, etc., which in turn grossly reduces the work efficiency of an individual and increases morbidity and mortality. From our experience, after a metabolic surgery (mini-gastric bypass -MGB), the investigators find comorbidities, especially sleep apnoea and type II diabetes, getting controlled early before significant weight loss has started. Also, there is an improvement in the parameters of the metabolic syndrome after metabolic surgery. The prospective cohort study aims to correlate the comorbidities resolution after mini-gastric bypass surgery for morbid obesity and change in body composition.