Hard-boiled egg nutrition absorption rate of 100%, egg yolk in the lecithin, triglycerides, cholesterol and lecithin, on the nervous system and physical development has an important role in slowing down the mental decline of the elderly. Lecithin is regarded as the nemesis of Alzheimer's disease by medical experts, and can also prevent and control atherosclerosis. The protein in eggs has a repair effect on liver tissue damage. Eating eggs in moderation is one of the experiences of many long-lived people to prolong their lives.

Eggs eat a variety of ways, on the absorption of nutrients and digestibility, hard-boiled eggs for 100%, scrambled eggs for 97%, 98% of the tender fried, the old fried for 81.1%, open water, milk eggs for 92.5%, raw for 30% - 50%. It can be seen that hard-boiled eggs are the best way to eat, but be careful to chew and swallow slowly, otherwise it will affect the absorption and digestion. However, for children and the elderly, or steamed egg custard, egg soup is the most suitable, because these two practices can make the protein slack, very easy to be digested and absorbed. Eggs are not high in vitamin C, so it is best to eat eggs supplemented with the right amount of vegetables.

From the point of view of nutrition, in order to ensure dietary balance, to meet the needs of the body, but not over-nutrition, in general, the elderly eat 1 egg a day is appropriate. Young people, engaged in mental labor or light manual labor, you can eat two eggs a day; engaged in heavy physical labor, consume more nutrients, you can eat two eggs a day; children and teenagers due to growth, metabolism fast, you can also eat two eggs a day. Pregnant women, women in labor, lactating mothers, the weak and patients recovering from major surgery, need to increase the good protein, can eat 2 - 3 eggs a day, should not be too much.