The capacity of gastric bypass to significantly reduce weight and improve metabolism in individuals with extreme obesity and obesity-related health problems is one of the procedure’s key benefits. Many people who have gastric bypass surgery lose a substantial amount of weight quickly in the first year after the procedure, and their weight reduction continues over time. Furthermore, alterations in gut hormones that control blood sugar, appetite, and satiety may result from the rerouting of the digestive system, which would enhance metabolic health. Gastric bypass surgery is a significant surgical treatment that entails risks and probable consequences, such as bleeding, infection, gastrointestinal problems, and nutritional deficits, despite its success. In order to maximize results and reduce the chance of problems, patients must make lifetime dietary and lifestyle modifications.