Professional bodybuilders usually eat at least 15 egg whites every day (at least 5 eggs per meal) and make steamed eggs (with no or little water). This will not only ensure adequate intake of protein, but also avoid excessive intake of fat and cholesterol.
But eating raw eggs is neither hygienic nor easy to digest and absorb. Eggs are often contaminated by salmonella and parasite eggs, which are easy to spread without treatment. In addition, egg white also contains an antitrypsin that is harmful to human body. When the human body ingests raw eggs, antitrypsin enters the digestive tract, which interferes with the hydrolysis of protein by trypsin and affects the digestion and absorption of protein. Raw egg white also contains 0.05% avidin, which is a harmful substance. Biotin can be synthesized in the human intestine, so it is generally not lacking. If a large number of raw eggs are eaten for a long time, avidin in raw egg white will combine with biotin in the body to form a stable compound, so that biotin can not be absorbed by the intestinal wall, resulting in biotin deficiency. Recently, it has been reported that raw eggs are easy to ferment and deteriorate when passing through the intestine, and sometimes nitroso compounds may be produced. This compound is carcinogenic. After the eggs are cooked or cooked by other methods, salmonella and parasite eggs are killed, antitrypsin and avidin are also destroyed, while other nutrients are intact, and protein becomes loose and easy to digest and absorb, which can achieve the purpose of making full use of various nutrients in eggs. So, don't eat raw eggs, eat cooked eggs. It is unscientific to say that eating raw eggs is more nutritious than eating cooked eggs.