Protein: They all have different benefits, depending on what nutrients you need to choose to eat protein or egg yolk:

The value of protein is determined by the type, structure and nutritional content of amino acids. Protein in eggs is protein with the best quality, the most kinds and the richest ingredients among food varieties. Therefore, protein in eggs can be used as the nutritional standard of protein in other foods. Secondly, foods with low protein content, such as fruits and vegetables, cereals, etc. If eaten with eggs, they can complement each other, thus improving the utilization rate of protein. For example, eating the essential amino acids of human body is insufficient, or eating the food with poor quality in protein can't meet the requirements of human metabolism, but if you eat it with eggs at the same time, you can make up for those insufficient ingredients and form a perfect high-quality protein. Therefore, egg protein plays a physiological role in promoting, synthesizing and making up for human metabolism. In addition, egg protein is a cheap and good food. Similarly, the price of 1g egg protein is much lower than that of 1g meat protein, but it has high nutritional value and is worth eating more.

There is almost no fat in protein (or egg white).

Protein contains vitamin B.

In addition, calcium, potassium and sodium are all essential substances for human metabolism. It's all in the egg white

Egg protein contains an enzyme, which has the function of bacteriolysis. There are many tiny pores on the eggshell. Although bacteria can enter eggs through pores, eggs are still not easy to destroy and deteriorate due to the action of enzymolysis bacteria. Cooked eggs are easy to rot, which is caused by the failure of enzymes in eggs. In addition, this enzyme can also inhibit viral infection. Some people drink vinegar or wine eggs when they have a cold, which is the mechanism. Finally, the enzyme can also cultivate lactic acid bacteria after entering the human body, and it also has a limiting effect on other excellent bacteria.

Egg yolk: Fat accounts for about 10% of the whole egg, and most of it is concentrated in egg yolk. The main components of fat in eggs are phospholipids and cholesterol. Phospholipid is the main component of egg yolk and plays an emulsifying role. Choline separated from phospholipids enters the human body and has the function of preventing aging.

Cholesterol is one of the essential substances for human physiology. The cholesterol synthesized by human body itself is not enough, and it still needs to be ingested from food about 1/3. What effect does cholesterol have on human body? It is a raw material for making sex hormones, adrenocortical hormones, vitamin D and bile. The first three substances play an important role in physiological processes such as human growth and reproduction, while the latter plays the role of emulsifying fat in digestion. It can strengthen the digestion and absorption of fat in the small intestine. In addition, cholesterol also has a protective effect. For example, it can prevent invasion factors that destroy red blood cells by adhering to the surface of red blood cells, and it can strengthen the strength of blood vessels and prevent them from rupturing. In addition, it is related to nerve conduction function and is necessary to destroy tumor cells or other harmful substances. Excessive deposition of cholesterol on the blood vessel wall is the cause of atherosclerosis, but if the blood vessel is not strong enough, it is easy to cause blood vessel rupture and cause diseases such as cerebral hemorrhage. Therefore, things have no good or evil, which is a disaster. As long as you don't consume too much cholesterol in your life, it is not only not terrible, but also necessary. As long as we pay attention to properly absorb nutrients from food, we can completely improve our health and prevent diseases.

Eggs are rich in vitamins, especially vitamin A, which is stored in yolk. Vitamins are essential nutrients for hatching chickens and indispensable components in metabolism, so the human body needs a lot. If you eat two eggs a day, your vitamin A intake is equivalent to 50% of what you eat a day.

Iron in inorganic salts is also stored in egg yolk. Iron plays an important role in hematopoiesis and transporting oxygen, carbon dioxide and nutrients in blood, so it is of great significance to human health, so iron deficiency is often an important cause of anemia. There is also phosphorus in eggs, which can constitute essential phosphoric acid for human body and is an indispensable substance for energy supply and maintaining internal environment stability.