The weight of an egg is about 5-6g, and the related explanations are as follows:

1. The weight of an egg will be affected by many factors such as the size, variety and freshness of the egg. The size of an egg is one of the important factors affecting its weight. Generally speaking, larger eggs will have a heavier weight, while smaller eggs will have a lighter weight. This is mainly because the size of eggs is related to the nutrients they absorb during production and the individual differences of hens.

2. The variety of eggs will also affect their weight. Different breeds of chickens have different eggs in size and shape, so their weight will be different. For example, the eggs laid by native chickens are generally smaller and lighter than those laid by commercially farmed chickens.

3. The freshness of an egg will also affect its weight. Fresh eggs are relatively heavy because of their high moisture content. Eggs stored for a long time will gradually evaporate water, so their weight is relatively light.

Nutritional value of eggs

1. Eggs contain high-quality protein, which is an important substance for human body to build and repair tissues. They play a vital role in the growth and development of the body, tissue repair, immune function and so on.

2. Eggs also contain a variety of vitamins and minerals, such as vitamins A, D, E and B, as well as calcium, phosphorus and iron. These nutrients play an important role in the normal physiological function and health of human body, such as maintaining normal physiological metabolism, promoting bone development and protecting eyesight.

3. Eggs also contain useful substances such as lecithin and choline. Lecithin can improve human metabolism and immunity, promote brain development and improve memory. Choline can promote brain development and improve memory, which is especially important for the intellectual development of children and adolescents.

4. Eating eggs in moderation can meet the human body's demand for various nutrients, which plays an important role in keeping healthy and promoting growth and development. At the same time, eggs can be eaten in a variety of ways, such as frying, frying, steaming, boiling, etc., so that people can enjoy delicious food and get rich nutrition at the same time.