It is reported that many people drink milk in the morning, thinking that it can completely absorb nutrients. In fact, drinking milk on an empty stomach will soon be discharged into the large intestine through the stomach and small intestine, and as a result, various nutrients will be discharged from the body before digestion and absorption. The correct way should be to eat some food before drinking milk. Excessive gastric acid leads to protein's degeneration and precipitation, and nutrients are not easily absorbed by the stomach, which seriously leads to indigestion and diarrhea. Therefore, some bread, biscuits and snacks should be served with milk. It can be seen that the main reasons for not drinking milk on an empty stomach are: First, it is easy to cause diarrhea; Second, the absorption efficiency is not high. Because the time through the gastrointestinal tract is too fast. Try to put milk at the end of a meal before drinking, which is beneficial to absorption and tolerance. Yogurt is fermented from pure milk. In addition to retaining all the nutrients of fresh milk, lactic acid bacteria can also produce various vitamins necessary for human nutrition during fermentation, such as vitamin B1, vitamin B2, vitamin B6, vitamin B12, etc. Yogurt is not only nutritious, but also contains lactic acid bacteria, so it has health care function. These functions are: 1. Maintain the ecological balance of intestinal flora, form a biological barrier, and inhibit the invasion of harmful bacteria into the intestine. 2. To prevent constipation by producing a large number of short-chain fatty acids to promote intestinal peristalsis and a large number of bacteria to grow and change osmotic pressure. 3. Yogurt contains a variety of enzymes to promote digestion and absorption. 4. By inhibiting the growth of saprophytic bacteria in the intestine, the toxins produced by corruption are inhibited, so that the liver and brain are protected from these toxins and aging is prevented. 5. By inhibiting the growth of saprophytic bacteria and some bacteria in the intestine. So as to inhibit carcinogenic factors produced by these bacteria and achieve the purpose of preventing cancer. 6. Improve human immune function. Lactic acid bacteria can produce some substances that enhance immune function, which can improve human immunity and prevent diseases. Yogurt is a long-lived drink. According to the earliest research results of the Nobel Prize winner and Russian food expert Mechnikov (1845-1916), yogurt contains a growth active factor, which can enhance the immune function of the body, and is beneficial to health, disease resistance and anti-aging. There are many longevity places in the world, and residents have the habit of drinking yogurt for a long time. Some studies believe that people in Bulgaria live longer because they drink more yogurt, and the overall average height of Japanese people increases because they often drink yogurt. According to the research results of scholars, the reasons why yogurt is beneficial to human health and longevity may be as follows: 1. Yogurt can enhance human immune function; 2. Reduce the level of serum cholesterol. Experiments have proved that even without any drugs. After drinking about 24 grams of yogurt per meal, cholesterol can be reduced after one week. 3. Regular consumption of yogurt can promote intestinal movement, shorten the transit time of food from mouth to anus, soften the contents of glycolysis colon, increase fecal excretion, prevent constipation, and help prevent colon cancer. Therefore, yogurt is known as "longevity food" abroad. Yogurt is also a good source of calcium. Although the nutritional composition of yogurt depends on the source and composition of raw milk, generally speaking, the composition of yogurt is higher than that of raw milk, on the one hand, because of the high quality requirements of raw materials, on the other hand, because some yogurt is made with a small amount of milk powder. Therefore, generally speaking, drinking a cup of 1.5og yogurt can meet 1.3 of the daily calcium required by children under 11 years old and 1.5 of the calcium required by adults. 2. Yogurt is easier to absorb than milk. Flour can be easily digested and absorbed when it is made into steamed bread by fermentation, and yogurt made from milk has the same effect. About 21% of sugar and protein in milk are decomposed into small molecules, such as galactose and lactic acid, small peptide chains and amino acids. The fat content in milk is generally 3% ~ 5%. After fermentation, the fatty acids in milk can be increased by 2 times compared with raw milk. These changes make yogurt easier to digest and absorb, and the utilization rate of various nutrients is also improved. Especially for people with lactose indigestion, eating yogurt will not cause abdominal distension, excessive gas or diarrhea. Fresh milk is rich in calcium, and minerals such as calcium will not change after fermentation, but lactic acid produced after fermentation can effectively improve the utilization rate of calcium and phosphorus in human body, so calcium and phosphorus in yogurt are more easily absorbed by human body.

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