It may be a problem with the stomach. There are 400 kinds of bacteria in the stomach of healthy people, and beneficial bacteria account for an absolute advantage. Once the harmful bacteria occupy the absolute advantage, the gastrointestinal flora will be seriously out of balance, and the harmful bacteria and their toxins will erode the gastrointestinal mucosa, leading to gastritis, peptic ulcer, colitis and other gastrointestinal diseases. \ x0d \ x0d \ Since gastrointestinal diseases are caused by harmful bacteria, it is reasonable to say that as long as harmful bacteria are eliminated, gastrointestinal diseases will be contained. As a result, antibiotic drugs came into being. However, antibiotics did not surprise the medical community for long: although patients with gastrointestinal diseases took a large number of antibacterial and anti-inflammatory drugs, it was useful to take them, and their illness became more and more serious, so that acute gastrointestinal diseases turned into chronic gastrointestinal diseases and even intractable gastrointestinal diseases. \x0d\ Probiotics are a kind of bacteria living in human intestines, with Bifidobacterium and Lactobacillus as the main representatives. Because they can form a biological barrier in the intestine, repel and inhibit harmful bacteria, produce substances beneficial to the human body, promote digestion and absorption and intestinal peristalsis, and enhance human immunity, they have gained the reputation of "human friends". So, who needs to add nine concentrated solutions? \x0d\ 1. Caesarean section children, premature infants, low birth weight infants, artificially fed infants: These children have low immunity, and they either have a cold or enteritis every three days. \x0d\2. For people with diarrhea or constipation, western medicine and traditional Chinese medicine have little effect. No matter infectious diarrhea caused by bacteria, viruses and protozoa or non-infectious diarrhea, there is intestinal flora imbalance. Nine strains can be effective! \x0d\3. Tumor patients receiving chemotherapy or radiotherapy: Chemotherapy drugs and radiation will kill probiotics and lead to intestinal flora imbalance. It is characterized by abdominal distension, constipation, loss of nutrients and absorption of toxins, which not only affects the recovery of patients, but also may force chemotherapy and radiotherapy to be interrupted. \x0d\4. Patients with liver cirrhosis and peritonitis: They not only have flora imbalance, but also have lipogenic endotoxemia with different degrees of severity. Supplementation of probiotics can inhibit the spoilage bacteria producing amine in the intestine, reduce the acidity in the intestine and the endotoxin content in the blood. \x0d\5. Patients with enteritis: Although the cause of ulcerative colitis is not clear, probiotics supplementation can achieve certain curative effect. \x0d\6. Dyspepsia: Functional dyspepsia is characterized by recurrent or persistent symptoms such as upper abdominal distension, anorexia, heartburn, etc., and there is no stomach, liver, gallbladder and pancreas disease. Probiotics can promote digestion. Lactose intolerance ("milk allergy"): Lactase is deficient in nature, or when Lactase is deficient due to intestinal infection and malnutrition, \x0d\7. Lactose cannot be decomposed, which leads to abdominal distension and diarrhea. Probiotics can help decompose lactose in milk and promote the absorption of nutrients in milk. \x0d\8. People who lack physical activity for a long time need to be supplemented with probiotics because of their small amount of activity and weak gastrointestinal peristalsis, resulting in indigestion, fatigue and intestinal discomfort. Of course, healthy people often supplement probiotics, which can promote the absorption capacity of the intestine and always maintain a balanced nutrition. \x0d\9 Middle-aged and elderly people: Probiotics such as Bifidobacterium in human intestine will decrease with age. Supplementing probiotics can be used as a health care method for the elderly.