The main component of eggshells is calcium carbonate, and it is not found that eggshells have the effect of lowering blood sugar. Lowering blood sugar requires dietary control, exercise therapy, taking hypoglycemic drugs and insulin injection. 1. Dietary control: For people with high blood sugar, it is necessary to adjust the dietary structure, reduce the intake of carbohydrates, and refrain from eating or eat less food that raises blood sugar quickly, such as white rice, steamed buns, noodles, buns, etc. The main food can be replaced with other food that raises blood sugar quickly. The staple food can be replaced with slow-glycemic coarse grains, such as brown rice, whole wheat, oats, corn and so on. 2. Exercise therapy: Exercise can increase the sensitivity of peripheral tissues to insulin, which is conducive to controlling blood sugar. 3. Taking hypoglycemic drugs: commonly used hypoglycemic drugs include metformin and acarbose. Metformin is the first-line drug for the treatment of diabetes, which can lower blood sugar and also reduce weight. The common adverse reactions of taking metformin are gastrointestinal reactions, such as diarrhea, abdominal pain, nausea, vomiting and so on. 4. Insulin injection: For patients with type 1 diabetes or poor glycemic control, insulin injection is an option. There are many kinds of insulin, such as short-acting Mentholatum insulin, long-acting Glucagon insulin, etc. Insulin can be chosen according to the actual situation of blood sugar. The common side effects of insulin injection are hypoglycemia, hard nodules under the skin at the injection site and so on. To lower blood glucose, you need to go to a regular hospital for consultation, let professional doctors assess the blood glucose level, make a plan for lowering blood glucose, follow the doctor’s instructions, do not stop or increase medication without authorization, and monitor your blood glucose regularly.