Hard-boiled eggs are common food and do not have the special efficacy and effect of drugs, but hard-boiled eggs can provide the body with high-quality protein and other nutrients. Each 100 grams of hard-boiled eggs contains 143 calories, of which 12.56 grams of protein, 0.7 milligrams of carbohydrates, 9.51 grams of fat, vitamin A160IU, 56 milligrams of calcium, 1.75 grams of iron. Proper consumption of hard-boiled eggs can supplement the body’s need for high-quality protein. At the same time, egg yolks contain high quality lecithin, which is beneficial to the human body when consumed properly. However, it is not advisable to consume too many hard-boiled eggs, as it may lead to nausea, vomiting and other indigestion symptoms. People who are allergic to eggs should not consume eggs.