Sleeve Gastrectomy Process: From Preparation to Healing If you are considering sleeve gastrectomy, it's better to consult with your specialist to guide you through the process. Sleeve gastrectomy is widely popular in Singapore and is a surgical procedure to help severe cases of obesity manage health complications such as diabetes, bone problems, and heart disease. To learn more about sleeve gastrectomy, check out this website for Q&A and other important details.