Eating corn may cause an increase in blood sugar. Corn contains a certain amount of sugar, so eating it will cause blood sugar rise, but the glycemic index of corn is not high, 55 (boiled sweet corn), belonging to the middle GI food; so a small amount of food will not make the blood sugar fluctuations. Moreover, corn is rich in amino acids, unsaturated fatty acids, flavonoids, dietary fiber and other nutrients, so both healthy people and diabetic patients can eat corn, can help replenish nutrients and promote health. Patients with diabetes should also cooperate with their doctors to standardize the use of medication and maintain a healthy diet to help control blood sugar.