The proportion of excess weight is significantly increasing accross the world,A recent study shows that 655 of US adult population is obese or overweight,Asia Experiencinf similar rise in the proportion of obesity.obesity can be measured by simple measures ie BMI of <25kg/m2>30kg/m2 indicates obesity.Eviedence suggest that with invrease BMI obese develop metabolic syndrome and insulin resistance.Thus ,this indicates obesity is a heterogeneous disorder with risk profiles.