Experts say too clean and unhealthy

Although bacteria can make people sick, it can also "stimulate" the body's own defense system to develop healthily.

Text / Newspaper Intern Reporter Li Wei

Wash your hands frequently to minimize the chance of contact with bacteria and reduce the incidence of disease. Now, this traditional health knowledge is being challenged by scientific experiments. Recently, Sino-US scientists have discovered that the cooperation of scientists from China and the United States has consistently ranked the majority of bacteria-killing products as the first staphylococcus, staphylococcus, which not only acts as an anti-inflammatory agent, but also protects the body from widespread inflammation. It is a faithful "guardian" of human skin.

Lai Yuping, a postdoctoral fellow at the University of California, San Diego, who took part in the study, was recruited as a professor at East China Normal University in March this year. Lai Yuping told the Beijing Science and Technology News that not all bacteria are harmful and bacteria are divided into beneficial bacteria and harmful bacteria. Beneficial bacteria can become the body's "safeguards" and can stop the occurrence of diseases. Harmful bacteria can also continue to "domesticate" the body's immunity and make the body stronger. For people to be healthy, the practice of trying to kill all bacteria is not scientific. People are in contact with a small amount of bacteria, which is beneficial to health.

In fact, bacteria are not only ubiquitous but also accompany people for life. The amount of bacteria that light lives on the skin is about 10 times that of human cells. A scientist in the United States has divided the human body into four "bacterial communities," namely, wet armpits, dry fingers, arms, and nasal and oily areas. Among them, the armpits are one of the sites with the highest number of bacteria inhabited by humans, and the dried fingers not only colonize the bacteria, but also serve as a medium for bacterial transmission.

In the past, people thought that illness was closely related to environmental pollution, low living conditions, and infection of bacteria. As a result, in recent years, a large number of antibacterial products on the market, especially those products that claim to have a bactericidal effect of more than 99%, are becoming a powerful weapon for eliminating every bacteria in the daily life and keeping them away from diseases.

The results of international authoritative organizations show that in recent years, excessive cleanliness has increased the incidence of childhood asthma. The incidence of asthma in people who had measles, respiratory diseases, intestinal diseases, and rural children who used less vitamins and had more contact with livestock was lower.

A recent scientific study also found that if the growth environment of infants and young children is too clean, it will affect the development of their immune system, and adults are more likely to suffer from heart disease and other diseases.