Once a person is introduced into the world, it takes only a few hours to become associated with bacteria and form a robust, well-established little world – the intestinal flora. Bacterial flora in the infant gut Roughly speaking, there are about 2,000 species of bacteria living in each person’s gut. They are called the intestinal flora and their functions are vital to human health, including helping to absorb nutrients, synthesize complexes or prevent infections. Any imbalance in this intestinal ecosystem can cause dangerous health problems. Known as the body’s “second brain,” the intestinal flora consists of 100 trillion (1 trillion = 1 trillion) bacterial “soldiers” that use the gastrointestinal tract as a base to establish a “command” for operations. “. The production of nutrients, directing the body’s metabolism, maintaining normal immune function, affecting human health. People often talk about “bacteria”, but I do not know that there are good and bad bacteria. In the intestinal flora, there are “beneficial bacteria” that provide positive energy, “harmful bacteria” that love to play tricks, and a group of neutral, sensitive “conditional pathogenic bacteria”. When the body needs, the intestinal flora will also become the body’s “health guards” to defend human health. A small introduction to the intestinal flora Quantity: 100 trillion bacteria. Species: 500-1000, common ones are E. coli, Lactobacillus, anaerobic bacteria, Bacillus, etc. Base: After stomach acid, intestinal flora mainly exists in small intestine and large intestine, with large intestine being the main one. The first base: colon (the seat of the main flora, the workplace of flora) The second base: cecum (the warehouse of flora, balance flora) Intestinal flora composition Beneficial bacteria, harmful bacteria, conditional pathogenic bacteria “bacteria overload”, “food was checked for bacteria”. Such words seem to give people an inexplicable fear, as if we live in a world where unclean and unsafe things are lurking everywhere. In fact, not all bacteria are harmful, the human body itself is a huge “bacteria factory”. Even if the harmful bacteria, it is not the first contact will get sick. The main places where the human body deals with bacteria are the skin, respiratory tract and gastrointestinal tract. “Even if we wash our hands clean, there will be bacteria on them.” Whether or not these bacteria will cause disease is related to the nature of the bacteria, the amount of bacteria, and the body’s resistance. The gastrointestinal tract has the largest number of bacteria, and there are three main categories: beneficial bacteria, harmful bacteria and conditionally pathogenic bacteria. In simple terms, beneficial bacteria are the “positive energy” in the intestinal flora, bifidobacteria are the most well-known, can promote intestinal motility, inhibit harmful bacteria. As the saying goes, “where there is light, there is darkness”, there are harmful bacteria in the small world of intestinal flora, such as Salmonella, which exist normally and fight against the beneficial bacteria, and once they grow in large numbers, they will cause diseases. Conditionally pathogenic bacteria are good “moderate molecules”, but bad “wallflowers”, such as E. coli, which normally have a positive effect on health and are an essential part of the body, but once out of control, they can cause health problems. The three types of intestinal bacteria, who is more who is less is not good, a balanced presence is OK Human understanding of the intestinal flora is only a hair, no one can name every intestinal bacteria. What is recognized is that the intestinal flora is formed by the interdependence and action of three different types of bacteria: beneficial bacteria, harmful bacteria and conditionally pathogenic bacteria. There are benefits to a properly functioning, healthy competition of intestinal flora. Firstly, it can provide nutrients to the body and promote the absorption of nutrients such as proteins and minerals. Secondly, the competitive mechanism of flora is used to form the body’s resistance. When foreign bacteria invade the body, intestinal flora and competition, beneficial bacteria are strong enough, harmful bacteria will be eliminated from the body, does not affect the normal functioning of the body. Intestinal flora imbalance, talent will be out of order. When the beneficial bacteria can not compete with the harmful bacteria or conditionally pathogenic bacteria, it will be manifested as bacterial infection, diarrhea, abdominal pain, vomiting, fever and other symptoms of gastrointestinal diseases. Long-term imbalance of intestinal flora can affect human health. People who often eat supermarket food, fast food, noodles and other junk food, almost all good bacteria are eliminated, immunity is poor, and the risk of diabetes is high; people who only eat red meat for a long time have too much Clostridium perfringens (a harmful bacteria), immunity is reduced, foul-smelling stools, and the risk of atherosclerosis, myocardial infarction, and brain infarction is high. Five major causes of intestinal flora imbalance 1, long-term diet imbalance. For example, excessive intake of meat or vegetables, long-term eating unhealthy food, etc. 2, intake of food contaminated by bacteria. Lower resistance, so that the condition of pathogenic bacteria “bad”, or excessive intake of harmful bacteria, intestinal flora imbalance, diarrhea symptoms. 3, ageing. With the growth of age, some of the beneficial bacteria decreased, harmful bacteria increased, the body’s immunity is weakened. 4, the use of certain drugs. Abuse of antibiotics leads to imbalance of intestinal flora and decreased immunity. 5.Gastrointestinal dysfunction. Organic causes lead to imbalance of intestinal flora, immunity is also reduced.