Eggs can be eaten every day. According to dietary guidelines, healthy adults should eat one egg a day. Children and adolescents who are in a period of rapid growth and development can increase to two. Different groups of people can adjust their egg intake appropriately according to their own preferences and specific conditions. Eggs are rich in nutrients, each 100 grams of eggs contain 143 calories, of which 12.56 grams of protein, 0.72 grams of carbohydrates, 9.51 grams of fat, 56 milligrams of calcium and 1.75 milligrams of iron. Moderate intake of eggs can provide the body with the above nutrients to meet the requirements of the functioning of the human body, while promoting growth and development. Egg protein is a good source of protein with good absorption rate and contains eight essential amino acids in a reasonable ratio. However, egg yolk contains more cholesterol, every 100 grams of eggs contain 372 mg of cholesterol. Patients with hypercholesterolemia and hyperlipidemia need to appropriately limit the intake of eggs, especially egg yolks. Those who are allergic to eggs should not ingest eggs.