Obesity is a term used to describe a condition wherein a person's body has an excessive percentage of fat. Metabolic surgery is an effective and long-term treatment for managing the cases of morbid obesity. It leads to significant weight loss and helps improve, resolve or prevent a variety of related diseases such as hypertension, type-2 diabetes, sleep apnea, heart disease and some types of cancers. Metabolic surgery is highly effective in achieving significant and durable weight loss at a low perioperative risk when proper patient selection and long-term follow-up are ensured. It is also a potentially effective treatment option for type-2 diabetes patients who are obese. Metabolic surgery, also called bariatric surgery, involves making surgical changes in the organs of the digestive system in order to improve the health of the patient. Common surgical processes involved in metabolic surgery include sleeve gastrectomy, gastric bypass, bilio-pancreatic diversion, gastric band and duodenal switch. Within days to weeks after metabolic surgery, diabetes condition of the patient begins to improve. However, weight loss happens gradually. This book presents researches and studies performed by experts across the globe with respect to obesity and metabolic surgery. Those in search of information to further their knowledge will be greatly assisted by this book.