1930 on this day, it is precisely because of the socio-economic depression, the decline in living standards and sanitary environment, malnutrition, cholera, dysentery and other diseases spread. At that time, the society was concerned about preventing the spread of bacteria, which led Dr. Ren Tian to study and investigate which bacteria could pass the acid resistance test of human body or stomach or be beneficial to human body. In the five years from 1930, * * * tested more than 300 kinds of bacteria, and finally found a lactic acid bacteria which can effectively resist human stomach acid and bile, and named it Shirota ...1935. He began to produce Yakult-Yakult, yeast milk beverage, and Yakult was produced under this medical research. 2. As we all know, active lactic acid bacteria beverage has excellent protective effect on human stomach because it contains active lactic acid bacteria. However, not all lactic acid bacteria can protect the intestine. After most lactic acid bacteria enter the digestive tract from the mouth, they will be blocked by strong acids such as gastric acid, bile and intestinal wall secretions. Lactic acid bacteria with weak acid tolerance will be killed by gastric acid, so they cannot survive. Experts say that only probiotics can keep the strong acid in the body and reach the site alive. Proliferation improves the flora in the field and really protects the intestines. Among them, yakult provides supplements in the form of live bacteria to promote the improvement of microbial balance. At the same time, it can also inhibit abnormal fermentation in the field, thus preventing intestinal aging. In addition, foods containing such probiotics can also prevent bladder cancer, colorectal cancer, diabetes, hypertension and arteriosclerosis every day. 3. "Yiliduo" is not only a children's drink, but also suitable for different ages. I subjectively think that moderate drinking and drinking too many good things are not necessarily good for your health. Moderate drinking can achieve results.