Milk is rich in protein, fat, calcium, phosphorus, potassium, iron, magnesium, vitamins A and B, and more than 90% of protein can be absorbed and utilized by human body. Although fresh milk is rich in nutrition, some people will feel upset after eating it. The reason is that fresh milk contains lactose, and the digestive juice of adults lacks lactase, a catalyst to help digest lactose. If fresh milk is processed into dairy products-yogurt, it can not only eliminate stomach discomfort, but also promote digestion and absorption.

Yogurt contains a large number of lactic acid bacteria, which can decompose lactose in milk into lactic acid, make the pH value of intestine acidic and inhibit other harmful bacteria in intestine. At the same time, lactobacillus can produce an antibiotic in the process of growth and development, which has a certain inhibitory effect on typhoid and dysentery pathogens.

Lactic acid bacteria can also synthesize vitamin B, E, folic acid and other essential vitamins in the intestine.

Yogurt can promote gastric acid secretion and improve digestive function. Calcium in fresh milk forms calcium lactate in yogurt, which is easily absorbed by human body. Therefore, the nutritional value of yogurt is higher than that of fresh milk, and eating yogurt for a long time is very beneficial to the body.