The benefits of eating an egg a day: 1, can improve the body’s immunity, because eggs are rich in protein, and protein constitutes the raw material of many immune substances in the body, appropriate to eat an egg a day to supplement high-quality protein, can enhance the body’s immunity. 2, can prevent muscle wasting disease, because the protein in the egg also constitutes an important raw material of the muscle, through an egg a day Supplemental protein, the benefits in the prevention of muscle wasting disease is very obvious. The disadvantage of one egg a day is that it may cause hypercholesterolemia, because the egg yolk is rich in cholesterol, if too much intake will cause hypercholesterolemia, which in turn will cause a high incidence of cardiovascular disease.