There is no such thing as “how to eat onions to lower blood sugar”, onions generally can not play a role in lowering blood sugar. Onions are rich in vitamin C, potassium, folic acid, fiber, zinc and other nutrients, and low calorie, patients with diabetes can eat onions, can supplement the nutrients, promote the health of the body. However, onions generally do not have the effect of lowering blood sugar. Patients with diabetes are advised to standardize their treatment under the guidance of a doctor, and can lower their blood sugar by taking oral hypoglycemic drugs such as metformin or insulin injections, dietary control and exercise. Patients diagnosed with diabetes should cooperate with the doctor’s treatment, and should not take medication on their own.