Fresh milk with the highest nutritional value contains many minerals needed by human body, such as calcium, phosphorus and potassium, which plays a great role in children's development and metabolic regulation. And its unique lactose has an important nutritional effect on the human body, because galactose obtained after lactose degradation is particularly important for the baby's intellectual development; On the other hand, lactose can promote the growth and reproduction of lactic acid bacteria in human intestine, thus promoting the absorption of minerals such as calcium. Yogurt is generally made of high-quality fresh milk fermented by lactic acid bacteria, so its nutritional value is slightly lower than that of fresh milk, but it is not much different from fresh milk in nutritional composition. But one thing we must understand is that yogurt has high nutritional value, but yogurt drinks are not. Because yogurt drink is just a drink, not milk, and its nutritional components are only 1/3 of yogurt. Compared with fresh milk, the protein content of soybean milk is similar, but the vitamin B2 is only 1/3 of fresh milk, and the contents of vitamins A and C are zero. Although iron content is high, calcium content is only half that of fresh milk. The health care effect is equally divided. Although the nutritional value of fresh milk is the highest, it is precisely because of their different nutritional components that their health care effects are different. Generally speaking, various active substances contained in milk play a great role in eliminating foreign bacteria and viruses, repairing damaged and dead tissues and cells in our body, and maintaining the stability of the internal environment. In addition, fresh milk contains a lot of nutrients such as calcium and vitamins, which is also a good source of calcium supplementation. Yogurt is made of fresh milk, sterilized and fermented with active lactic acid. Therefore, lactic acid bacteria contained in yogurt can produce a large amount of lactic acid by fermenting lactose, which greatly inhibits the growth and reproduction of harmful bacteria in the intestine. In addition, yogurt also contributes to the digestion and absorption of substances in the intestine and enhances human immunity. Soybean milk contains high-quality plant protein, fat and vitamins, among which lecithin and vitamin E are higher than milk, so long-term drinking can regulate blood lipid, protect liver, prevent arteriosclerosis and promote thinking. Isoflavone, a trace component contained in soybean, also has health care functions such as cancer prevention and osteoporosis prevention. The timing is different. Usually we are used to getting up in the morning and pouring a glass of fresh milk, and then a piece or two of bread. The seemingly nutritious and delicious breakfast is actually the wrong time to drink fresh milk. According to the research of American and British medical experts, milk contains two hypnotic substances, one can make people fall asleep quickly, and the other has similar anesthetic and sedative effects. Therefore, if we drink fresh milk in the morning, these two substances can easily affect our cerebral cortex, thus affecting our work and study during the day. Therefore, nutrition experts believe that it is best to drink fresh milk at night or half an hour before going to bed. Relatively speaking, the time of yogurt and soybean milk is not so clear, but if you want to drink yogurt in the morning, in addition to preventing an empty stomach, it is best to drink some boiled water. If you are an old man who is used to drinking soybean milk, it is recommended to drink one cup in the morning and one cup in the evening to lower cholesterol and prolong life. Soymilk is suitable for the popular saying, "a radish is a pit", so is the choice of these three dairy products. If it is not suitable for people, or is naturally allergic to it, then don't choose blindly even if the nutritional value is high. For most people, fresh milk is superior to the other two in nutritional value, efficacy and taste, but it is not suitable for most people. For middle-aged and elderly people suffering from chronic digestive tract ulcer, chronic enteritis or gastrointestinal dysfunction, because fresh milk contains a lot of lactose, its tolerance is poor, and frequent drinking can easily lead to diarrhea. Therefore, middle-aged and elderly people generally should not drink more fresh milk. In addition, some babies will have allergic reactions to some protein ingredients in fresh milk, such as vomiting, irritability or eczema, anemia and so on. These babies are not suitable for drinking fresh milk either. Yogurt, which has been touted as "suitable for all ages", actually has many taboos in being suitable for people. For example, patients after gastrointestinal surgery have lost the ability to handle food. If they eat liquid or semi-liquid food rich in nutrition, they will quickly enter the small intestine, causing jejunum swelling, which may easily lead to vomiting, spasm, diarrhea, dizziness and other symptoms. For diabetics, you can only choose "sugar-free yogurt" made of sugar substitutes. In addition, it is best not to drink yogurt for babies under 3 years old, because skim yogurt is not conducive to the growth and development of the baby's nervous system. As for soybean milk, although the calcium content is low, it is unlikely to have any adverse reactions due to its high iron content, so there are not many people who are generally taboo, but generally speaking, soybean milk is most suitable for obese middle-aged and elderly people. Milk should not be boiled. Many people think that you can't have an empty stomach before drinking fresh milk, but it's not entirely true. There is absolutely no need for a baby under one year old to eat anything before drinking milk. But for many adults, especially those who are prone to diarrhea after drinking fresh milk, in order to prevent the aggravation of symptoms and reduce the waste caused by the discharge of fresh milk because it cannot be fully mixed with enzymes, it is best to eat something before drinking milk, or to drink while eating. It is best not to drink fresh milk before and after taking the medicine 1 hour. Because fresh milk will form a covering film on the surface of drugs, minerals such as calcium and magnesium in milk will react chemically with drugs, thus affecting the release and absorption of drug effects. In addition, fresh milk should not be mixed with juice, sugar, tea, coffee and chocolate. And it can't be boiled to "enhance the sterilization effect". Yogurt should not be drunk on an empty stomach. In fact, the way of drinking yogurt is similar to that of fresh milk in many places. First of all, yogurt should not be drunk on an empty stomach. Because yogurt is drunk on an empty stomach, lactic acid bacteria are easily killed by gastric acid, and their nutritional value and health care function will be greatly reduced. Secondly, yogurt is not suitable for heating and drinking. Because once the yogurt is cooked and heated, it will kill a large number of active lactic acid bacteria, the unique taste and taste of yogurt will disappear, and its nutritional value and health care function will be greatly reduced. In addition, because some strains and acidic substances contained in yogurt are harmful to teeth, parents must urge their babies to rinse their mouths quickly after drinking yogurt, otherwise dental caries will easily occur. Soymilk can't be poured into thermos bottles, and it is not suitable for boiling and heating fresh milk and yogurt, but soymilk is just the opposite. Because the trypsin inhibitor contained in fresh soybean milk takes 3 to 5 minutes to decompose, soybean milk should be cooked thoroughly before it is suitable for drinking. As the weather turns cold, some people may heat soybean milk and bring it to school or company in a thermos bottle, and then drink it during recess or lunch break, but this is actually not desirable. Because the soluble saponin contained in soybean milk can dissolve the scale in the thermos, if the soybean milk is put in the thermos for a long time, the "soybean milk scale solution" produced after the soybean milk is dissolved will also be harmful to the health.