(1) protein in milk contains eight essential amino acids, which are suitable for forming muscle tissue and promoting healthy development. It is more important for children and adolescents in the growth and development stage.
(2) The fat contained in milk has a low melting point and small particles, and is easily digested and absorbed by human body, with a digestibility of 97%.
(3) The main carbohydrate in milk is lactose, which can regulate gastric acid, promote intestinal peristalsis and help the secretion of digestive glands in human body.
(4) Calcium contained in milk is the best source of calcium for human body. Because the calcium in milk is easily absorbed by human body, which is much higher than other kinds of food. Moreover, the proportion of calcium and phosphorus in milk is appropriate, which is an ideal nutritious food to promote the development of bones and teeth of children and adolescents.
(5) Milk contains almost all known vitamins, such as vitamin A, vitamin C, vitamin D and B vitamins.
(6) Milk also contains antibody substances needed to promote children's development. Milk is the most ideal food for the healthy growth of children and adolescents. After World War II, Japan put forward the slogan "A glass of milk makes a nation strong". There is also a famous saying in Britain: "Nothing is more important than providing milk to children!" Therefore, 12 famous scientists in the fields of nutrition, food and dairy industry in China called for the revitalization of china dairy in "1998 China Dairy Science Forum" and often gave children milk.