Obesity is a chronic, relapsing and debilitating disease that occurs when a person carries excess weight or body fat which further results the risk of other diseases and health problems. It can be caused by genetic and environmental factors and can be difficult to control through dieting and exercise alone. A doctor will usually suggest that a person has obesity if they have a high body mass index. 800 million people around the world live with obesity but only 0.76% of them getting treated with the help of surgery.