WLS, or Weight Loss Surgery, is a medical procedure designed to help individuals with obesity lose weight. It involves various surgical techniques that alter the digestive system, making it easier to lose weight and maintain a healthier lifestyle. Common types of WLS include gastric bypass, sleeve gastrectomy, and adjustable gastric banding. Patients typically undergo WLS after exhausting other weight loss methods, such as diet and exercise. The surgery can lead to significant health improvements, including reduced risk of diabetes, heart disease, and other obesity-related conditions. However, it requires a commitment to lifestyle changes for long-term success.