Are magnetic fields harmful to the human body?

Humanity into the information society, a large number of television towers, radio stations, radar, satellite communications, microwave and other equipment and activities accompanied by electromagnetic radiation is also increasing. These devices play an important role in human life and development, but electromagnetic radiation itself, is an important environmental pollution factors, the public health has a potential, long-term impact. Scientists at Karolinska University in Stockholm, Sweden, after conducting a survey and study of more than 430,000 residents living near high-voltage lines for long periods of time, have clearly indicated that there is a direct link between electromagnetic waves and cancer, especially brain tumors and childhood leukemia. Most hospitals in Japan have designated exclusion zones where the use of cell phones is strictly prohibited to avoid interference with sensitive medical equipment.　　　　Electromagnetic radiation pollution is energy flow pollution, invisible and untouchable, but fills the entire space and is extremely penetrating. Any creature or equipment, are in its surroundings, by its role, unless to take certain shielding protection. And the more progress in social development, electromagnetic radiation pollution of the environment, the more serious the situation. Therefore, electromagnetic wave is beneficial to social development of information carriers and energy flow carriers, but also harmful to the human life of the pollution elements, and its harmful effects have been highly valued by the international environmental protection field.　　　　Electromagnetic waves from home appliances Whether electromagnetic waves generated by various household appliances can cause brain cancer, leukemia, deformed babies, miscarriages, etc., although there are a number of objections to this, some experts believe that this is true. Dr. Car-penter of New York University believes that 10-15% of all children's cancer is caused by 100V household power and electrical products. At the same time, the U.S. Environmental Protection Agency (EPA) also expressed concern and warned people to avoid exposure to electromagnetic waves.　　　　The electric mattress is a typical product of electrical appliances that are in close contact with the body for a long time. Epidemiological research shows that electric mattresses are in direct contact with the skin, and the resting cells are exposed to electromagnetic waves for a long period of time, which causes health disorders in the human body.　　　　The computer computer quickly enters thousands of households. Computer users are in the electric field, electric field power perpendicular to the electric conductor people and ground surface. Magnetic lines of force and power lines are different, by the computer monitor internal current generated by the magnetic lines of force are not affected by the human body or the ground surface, in a circular shape through the human body. It can be seen that the electric field is easily shielded by the conductor, while the magnetic field are easier to pass through all objects. Therefore, magnetic fields have a greater effect on living organisms than electric fields. 42 out of 7 pregnant women who used terminal monitors at Ottawa Canada between 1979 and 1982 had miscarriages, 1 had a premature birth, and the remaining 2 had babies with respiratory diseases. The one pregnant woman who did not use a terminal monitor at the company gave birth to a normal baby.　　　　Fluorescent lamps produce different magnetic field strengths, but studies have shown that two 20W fluorescent lamps side by side, 10Cm outside the magnetic field strength of 100MG, while 25Cm outside the magnetic field strength of 6.5MG. The most harmful to the body is very close to the user's head of the desk lamp. In addition, fluorescent lamps not only generate electromagnetic waves but also release ultraviolet rays, which can cause skin cancer and cataracts.　　　　The output power of cell phones is as high as 1 W. In the 1990s, cell phone factories and communication companies in the United States received huge compensation lawsuits. Most of the plaintiffs believed that they got brain tumors and other brain diseases after using cellular phones. There are also many cases of victimization. It has been recognized that electromagnetic waves from cell phones have caused aircraft accidents by disrupting avionics. In March last year, Japan banned the use of cell phones in hospitals because it was found that electromagnetic waves from cell phones were affecting the work of medical equipment.　　　　In addition, we use many electrical appliances such as air conditioners, hair dryers, ovens, vacuum cleaners, deep fryers, coffee makers, electronic watches, and lighting equipment. The products that have a high flow of electricity include vacuum cleaners, air conditioners, hair dryers, and heat generating heaters such as ovens and deep fryers that use electric motors.　　　　Electromagnetic waves affect the human body When the human body is in an electric field, the conductivity of the human body allows the current to flow through the skin into the earth, while the magnetic field through the human body has the potential to affect the iron molecules in the blood. Electric fields passing through the skin may cause skin diseases such as eczema. It has been said that women who use computers regularly are prone to skin aging. It is also recognized that electromagnetic waves are more harmful to blood cells and tissues such as genitals and lymph, where cell proliferation is faster, and to children.　　　　However, it is difficult to scientifically and meticulously investigate the effects of electromagnetic waves on the human body. This is because of the combined effect of different environmental factors on the human body, and it is difficult to do long-term tracking surveys. The effects of electromagnetic waves on the human body have been verified through epidemiological investigations and animal experiments.　　　　In 1979, Prof. N. Wertheimer and Prof. E. Leeper of Colorado University made an epidemiological investigation between high-voltage power lines and children's cancer. The result showed that the incidence of leukemia in children with strong electromagnetic fields was more than three times higher than that of other children. The so-called epidemiologic study is a research method that compares the factors that are considered to be the cause of cancer with the increased chance of cancer patients. A famous epidemiologic study is "Cigarette and Lung Cancer," which compares the number of lung cancer patients among heavy smokers with the number of lung cancer patients among non-smokers, and here the relationship between cigarettes and lung cancer is studied. The study of the relationship between electromagnetic waves and cancer in children utilizes this very approach. The report had a great impact not only on the whole United States but also on European countries, making people actively study the effects of ELF electromagnetic waves on the human body. At present, through a variety of animal experiments, Europe, the United States, Japan, experts and scholars believe that strong electromagnetic waves on the human body has a greater harm.