The content and proportion of nutrients contained in milk are close to the nutrients needed by human body, so drinking milk is a good choice for the body to supplement nutrition. According to modern nutrition research, every 100g milk contains about 87g water, 3.3g protein, 4g fat, 5g carbohydrate, 120mg calcium, and also contains iron, vitamin A, vitamin B, nicotinic acid and vitamin C, which can provide rich nutrition for human body.

(1) protein

Protein contained in milk is high-quality protein, mainly casein, globulin and milk protein. It contains all the amino acids needed for human growth and development, which is unmatched by other foods. Therefore, it is very suitable for young people who are growing up or middle-aged and elderly people with serious nutrient loss. It is of great benefit to supplement body nutrition.

(2) Calcium

The proportion of various mineral elements and trace elements in milk is appropriate and easy to be absorbed by the human body. In particular, it should be pointed out that one of the reasons why milk is welcomed by people is that the calcium content in milk is relatively high, and the growth of human bones and teeth is inseparable from the participation of calcium. Therefore, it is recommended that growing teenagers, menopausal people who are prone to calcium deficiency and the elderly drink milk.

(3) Carbohydrate

Milk is rich in carbohydrates and can provide energy for daily activities.

(4) Fat

The fat contained in milk is milk fat, which is a kind of high-quality fat and can be digested and absorbed by human body, which is beneficial to the absorption of some fatty vitamins.

(5) lactose

Lactose in milk is galactose and lactose, which is one of the most easily digested and absorbed sugars, but people who are lactose intolerant are not suitable for drinking milk.