What bacteria are beneficial to humans

When it comes to the word bacteria, many people may think that bacteria are harmful. If the human body is invaded by bacteria, it will get sick. This idea is not quite correct. Some bacteria are beneficial to the human body. So what bacteria are beneficial to the human body? The more common ones are lactic acid bacteria and yeast. We often hear about these two types of bacteria. So what other bacteria are there?

Beneficial bacteria generally refer to bacteria or fungi that grow in the human gastrointestinal tract and have a positive effect on human health. Experiments have shown that maintaining a large number of beneficial bacteria in the human intestine will be very beneficial for maintaining good health.

Lactic acid bacteria: active lactic acid bacteria, Lactobacillus acidophilus, Lactobacillus plantarum, Lactobacillus bulgaricus, Lactobacillus delbrueckii

Yeast: Candida albicans, Saccharomyces cerevisiae

Bacillus: Bacillus subtilis, Bacillus licheniformis

effect

For example, there are more bifidobacteria in the intestines of long-lived elderly people. Specifically, beneficial bacteria have the following benefits to human health:

1. Lowering cholesterol and blood lipids. Beneficial bacteria can reduce and inhibit the synthesis of cholesterol, and prevent the body from absorbing and utilizing cholesterol.

2. Synthetic vitamins The amount of vitamins we consume from our diet is far from meeting the needs of the human body. Therefore, some vitamins are synthesized in the intestines by beneficial bacteria, especially vitamin K, which is present in very small amounts in food. The reduction of beneficial bacteria will lead to vitamin K deficiency, diarrhea, coagulation disorders, etc.

3. Promote the absorption of calcium, iron and vitamin D. Lactobacillus will produce a large amount of acid during the metabolism process. The acid will increase the solubility of calcium and directly stimulate the gastrointestinal tract to maximize the absorption of calcium, iron, zinc, etc. The experimental results show that under normal circumstances, we can only absorb 1/3 of the digested calcium. By taking mamiai active probiotics, calcium absorption can be increased to 2/3 of the intake. Therefore, the growth of beneficial bacteria helps slow down the process of osteoporosis in the elderly and promotes the development of infants.

4. Improve immunity. There are beneficial bacteria and harmful bacteria in the intestines. If the beneficial bacteria occupy the surface of the intestine, the harmful bacteria will have no place to survive. This is called "positional protection." There are only so many positions, and if the beneficial bacteria occupy more, the harmful bacteria will be in a state of failure in the nutritional competition, and their growth and development will be inhibited. Therefore, when beneficial bacteria such as bifidobacteria and lactobacilli grow and multiply in the intestines, they will prevent external pathogens from invading the intestines and form a biological barrier. Moreover, the intestine is the largest immune organ in the human body. Beneficial bacteria can secrete some antigens to activate and strengthen the intestinal immune system.

5. Anti-cancer probiotics can degrade nitrosamines, eliminate the carcinogenicity of nitrosamines, and promote intestinal peristalsis. For example, if the elderly often suffer from constipation, some toxic and harmful substances will be retained in the intestines and threaten the intestinal surface, inducing intestinal tumors and causing cancer. As peristalsis speeds up, these harmful bacteria are excreted from the human body along with feces.