Sugar-sweetened yogurt generally has a glycemic index of about 48, and low-sugar or unsweetened yogurt has an even lower glycemic index. The glycemic index varies among different manufacturers and sizes of yogurt. Many yogurts sold on the market are yogurts with added sugar, with a glycemic index of about 48; yogurts are rich in calcium, protein, lactobacilli, vitamin A, potassium, phosphorus and other nutrients, which can play a role in promoting defecation and maintaining intestinal health. So both high blood sugar patients and healthy people can drink yogurt appropriately to help their health, but diabetic patients are advised to preferably choose low-sugar or sugar-free yogurt. Although yogurt has a certain nutritional value, but should not drink too much at once, so as not to cause indigestion and other symptoms. In daily life, patients with high blood sugar should maintain a low-salt, low-sugar and low-fat diet to help maintain stable blood sugar.