Gastric sleeve, or sleeve gastrectomy, is a restrictive bariatric procedure that surgically removes about 75% of the stomach, leaving a narrow tube-like pouch to limit food volume and curb appetite via reduced ghrelin production. Performed laparoscopically through small incisions, it takes 60-90 minutes and suits patients with BMI over 40 or 35 with comorbidities, offering 50-70% excess weight loss within 1-2 years. Unlike bypass, it doesn't reroute intestines, minimizing nutritional deficiencies while improving metabolic health and resolving conditions like sleep apnea. Post-op, patients follow a phased diet from liquids to solids, with regular vitamin supplements and monitoring to ensure long-term success. This surgery boasts high satisfaction rates due to its simplicity and effectiveness, serving as a standalone or first-step option in weight management. Gastric sleeve empowers lasting lifestyle changes for healthier living.