What effect does magnetic field have on human body, good or bad?

Magnetic field is an interaction phenomenon between magnets caused by moving charge or changing electric field. The basic characteristic of magnetic field is that it can exert force on the moving charge in an object, and the changing magnetic field propagates in space in the form of fluctuation. Magnetic field is also one of the earliest physical phenomena recognized by people. For example, the discovery of the compass can be said to be a symbol of ancient civilization. In modern society, more and more household appliances, telephones, radios, mobile phones, motors and transformers make people's daily lives related to the magnetic field phenomenon.

People can use a compass to identify the existence of the invisible earth's magnetic field, and people can also understand the role of gravity from the phenomenon of falling objects. There are countless radio waves with different frequencies in our living space, which people can listen to and watch through radio, wireless telephone and TV. Some people say that magnetic field, like sunlight, water and air, is the foundation of life on earth, because life is born, exists and develops in gravity, and creatures thrive in the natural magnetic field environment. However, in recent years, whether the increasing magnetic fields in our living environment affect the ecological environment, do harm to human health and cause new habits and diseases has become a topic of concern.

Remember 1979, American scholar Wertheimer and others found that the incidence of leukemia in children living near high-voltage distribution lines was significantly higher than that in other areas (am j epidemiol. , 109: 273-284, 1979), people began to discuss the influence of power frequency electric field and power frequency magnetic field on health when power transmission and transformation facilities are running. Ahlbom et al.' s research results show that the incidence of leukemia is twice as high as that in other areas when living in the power frequency magnetic field environment of >: /= 0.4 micron (Br J Cancer, 83: 692-698.2000), but Greenland et al. think that we should be cautious about the above results (epidemiology,1:624).

Of course, the influence of magnetic field on human health is not only manifested in carcinogenesis. It is known that the earth's magnetic field can affect the magnetic field arrangement of biomolecules such as collagen and fibrin, and the alternating magnetic field can also affect the ion channel level of cell membrane and the messenger conduction in cells. When people discuss the interaction between magnetic field and chemicals and radiation, it is found that AC magnetic field can reduce the effects of some narcotic drugs and enhance DNA damage caused by mitomycin (J radiation Res, 46: 257-264.2005). Because the magnetic field will cause some biological effects after acting on human body, some people use magnetic field to treat or improve some disease symptoms. However, due to the lack of sufficient research foundation, it is difficult to be understood, and some effects need to be confirmed and further discussed.

Reminiscent of the harm of low-frequency magnetic field in internet cafes to eyes and nervous system, people realize the complex influence of artificial magnetic field on human health. However, it is difficult to rule out the influence of personal living habits, especially the sunshine time, and the interaction of various radiation and magnetic fields in the living environment, and it is difficult to draw a definite conclusion. Although the research so far has not fully confirmed the harm of magnetic field to human health. However, in order to protect the living environment, the national environmental protection department has formulated appropriate management standards for power frequency electric field and power frequency magnetic field.

To quote an old saying, our body contains a large number of electrolyte ions with magnetic conductivity energy, so it is also easily influenced by external magnetic fields, causing the body's * * * sound and biological induction including both positive and negative aspects. ...

It is said that residential geomantic omen is a knowledge to evaluate the suitability of magnetic induction between living environment and residents. I think a harmonious magnetic field will make people feel healthy, quiet and comfortable. Actually, I seem to have some physical feelings. I like to live in a room facing north and south, and I am used to sleeping east and west. It's hard to sleep if you change places occasionally.

Of course, there is also a magnetic field between men and women. I remember I had a tense history when I was young. In other words, the magnetic field may be a manifestation of the charm of the opposite sex.

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In ancient times, our life originated from the magnetic field of nature. Today, we live in more and more natural and artificial magnetic fields. I think studying the influence of magnetic field on health should be a social topic that can't be ignored.