1. Egg yolk is rich in lecithin, vitellin, vitamins, calcium, iron and phosphorus, which is helpful for brain development;

2. Lutein and zeaxanthin in egg yolk can protect eyes from ultraviolet rays and reduce the risk of cataract;

3. Eggs contain almost all nutrients needed by the human body, which can provide high-quality protein and improve the body's immunity;

4. Eggs are rich in high-quality protein, which can help repair damaged liver tissue. At the same time, lecithin in egg yolk can promote stem cell regeneration.

The disadvantages of eggs are:

1. Some people with sensitive physique may have allergic symptoms, such as abdominal pain, diarrhea, rash, etc. if they take a large amount of protein at one time;

2. Metabolites in the human body with renal insufficiency cannot be excreted through the kidneys. If the patient eats eggs, the urea nitrogen in the body will increase, resulting in a more serious condition;

3. The secretion of digestive juice decreases in people with cold and fever, and the activity of various digestive enzymes also decreases. At this time, eating eggs is easy to indigestion, which may cause abdominal distension;

4. Egg yolk contains high levels of lecithin and cholesterol, which need to be metabolized in the liver, while the liver function of patients with hepatobiliary diseases is weakened. If you eat too many eggs, it will increase the burden on the liver.