There is a high voltage transformer box next to my home. Will it have any effect on the human body?

According to the national regulations, the proposed power facilities can only be put into operation after strict "electromagnetic environment assessment" by the authoritative department of the state. In fact, according to the electromagnetic measurement data of power facilities that have been built at present, their electromagnetic radiation values are all lower than the national limit standard. Due to residents' lack of knowledge of electromagnetic radiation, it is often easy to misunderstand. Electromagnetic radiation is not equal to electromagnetic pollution. Only by clarifying the concept scientifically can we eliminate unnecessary panic.

We humans are surrounded by all kinds of electromagnetic radiation. Both natural magnetic fields and sunlight will emit different intensities of radiation, but only when the radiation intensity exceeds a certain value (safe value) will it cause harm to human body, which is what we usually call electromagnetic pollution.

The electromagnetic pollution that affects human living environment mainly comes from natural and man-made electromagnetic pollution sources. Natural electromagnetic pollution is caused by some natural phenomena. The most common is lightning, which may not only cause direct harm to electrical equipment, aircraft, buildings and so on. But also causes serious electromagnetic interference in a wide frequency range from several kilohertz (KHZ) to several hundred megahertz (MHZ). Volcanic eruptions, earthquakes, magnetic storms and other phenomena caused by sunspot activities will also produce electromagnetic interference, especially the interference of natural electromagnetic pollution on short-wave communication.

Man-made electromagnetic radiation can be divided into two categories: one is electromagnetic radiation such as X-rays, which can make excited substances produce free electrons and turn atoms into charged ions. This kind of radiation is called ionizing radiation, such as radiation produced by nuclear facilities, radioisotopes and various radioactive wastes, which is very harmful to human body; The other is electromagnetic radiation, such as radio frequency and microwave, which absorbs energy through the transition of electron energy level instead of producing free electrons to ionize dielectric atoms.

Non-ionizing radiation can be divided into microwave radiation (300-300,000 MHz), radio frequency radiation (0.1-000 MHz) and power frequency radiation (50 HZ or 60 HZ) according to its radiation frequency. Among them, radio broadcasting, television, radio communication transmitter and other radio frequency equipment have a large radiation influence area, which has become the main factor of environmental electromagnetic pollution.

High-voltage equipment is not an electromagnetic pollution source, so residents need not worry about being hurt by electromagnetic radiation.

The radiation generated by high-voltage equipment under normal operating conditions, especially near transmission lines, is mainly 50 HZ power frequency electromagnetic radiation. According to a large number of field measured data, the influence range of power frequency electromagnetic radiation is very limited. The larger power frequency electric field intensity of substations is concentrated near the incoming and outgoing lines, and the power frequency electric field intensity in other directions is below 2 kV/m. For transmission lines, except for the distance conductor 10- 15m, the power frequency electric field intensity is less than the recommended standard of power frequency electric field intensity in residential areas.

In recent decades, a large number of scientific evidences published by CIGRE show that the power frequency electromagnetic radiation below 20KV/m has no adverse effects on human health, so there is no need to worry about the harm of electromagnetic radiation from substations or transmission lines to people living beyond the above distance.

In fact, some newly-built substations and transmission lines that have caused controversy among surrounding residents and think that there is electromagnetic pollution have not found a case of exceeding the standard through on-site electromagnetic monitoring by authoritative departments afterwards, and the measured data are often far below the limit standard recommended by the state.

Liu Zhiping

A mother once read a report describing that electromagnetic waves can make children suffer from physical and mental diseases such as leukemia. At the thought of high-voltage wires passing near her home, she immediately became nervous and began to worry about the health of the whole family. Nervousness and anxiety make the whole family fidgety every day.

This is not an individual event in a person's life. Television, radio stations, substations, computers, mobile phones ... even electrified metal wires will radiate electromagnetic fields. People are worried that those electromagnetic wires with ubiquitous energy will become invisible swords to kill people. Are they behind more and more common diseases such as tumors, leukemia, neurasthenia and fetal malformations? When mankind enters the era of electrification, people are suffering from great psychological torture while enjoying all the conveniences and myths it brings.

Now, more and more, we find that everyone's own guesses, doctors' warnings and some scientific research reports seem to strongly imply that staying away from electromagnetic radiation is the enemy of health and the consequences are serious! A medical report once pointed out that if you use a computer for 4-6 hours every day, the chance of getting cancer after three years is 26% higher than that of normal people. And in the report, the author sensationally said: If you put your head directly at the computer for a long time, you will feel backache, your body's resistance will be weaker and weaker, and your spirit will often be unable to concentrate-the killer of the computer family, "thoracic outlet disease", will get on your upper body, and more seriously, you will regret it if you get Alzheimer's disease or brain tumor!

Is electromagnetic radiation really a ghost killer threatening our life and health? Scientists' new research results surprised us!

Scientific research has uncovered Pandora's box.

There are many kinds of electromagnetic waves, which are different because of different frequencies. For example, visible light waves, ultraviolet rays and infrared rays all have different properties because of different frequencies. In the space where we live, we can basically come into contact with low-frequency electromagnetic fields with a frequency of tens of hertz. People are worried that electromagnetic radiation that causes cancer, abnormal pregnancy and affects human health such as nervous system is also produced by these daily low-frequency electromagnetic fields.

1979, American epidemiologist Wei collected a list of children suffering from leukemia. She guessed that the culprit might be wires, so she asked physicist Li Bo to cooperate. Li Bo couldn't know the specific intensity of the electromagnetic field that every child was exposed to, so according to the thickness of the wire and the proximity to the human body, he calculated the radiation dose of the electromagnetic field received by the child. The final conclusion of this research based on speculation and hypothesis is that children living in high-intensity electromagnetic fields generated by electricity are three times more likely to develop leukemia than children living in low-intensity electromagnetic fields.

As soon as this research report was published, a large number of research institutions in the United States immediately turned to study the effects of electromagnetic radiation on health. Without a conclusion, many environmentalists asked the state to remove power lines and substations from people's residential areas, and the court was immediately filled with lawsuits. Various instruments for measuring and preventing electromagnetic fields were released in the market, and the media began to sensationalize the risks of electromagnetic fields, and the whole world suddenly fell into the magic circle of electromagnetic radiation. People listen to advertisements, buy anti-electromagnetic products (but most of them are deceived), go to hospitals for electromagnetic radiation therapy and psychological counseling, and take pains to move their homes to places where they can't see wires. Until 1999, the total social cost of electromagnetic field fear in the United States in recent twenty years exceeded 25 billion dollars.

Civil disputes need an authoritative statement. 1996, the National Academy of Sciences published a research conclusion three years later: there is no evidence that low-frequency electromagnetic fields are harmful to human health. But how to explain the high risk of leukemia in children living near power lines? Scientists may answer that families living near power lines are poor and crowded, and they don't pay much attention to hygiene. These are all risk factors for leukemia. Subsequently, in 1997, the National Cancer Institute of the United States published its research results involving 1200 people for 7 years: any connection between leukemia and lead electromagnetic fields is too weak to be detected, so there is no need to worry. This rigorous and authoritative report finally slammed the Pandora's box of various social problems opened by electromagnetic radiation.

Reflection under lingering fear

The dispute over the harmlessness of electromagnetic radiation is not so much a real environmental health crisis as a dispute over the design methods of scientific research programs. When we know the experimental scheme of scientists studying the relationship between electromagnetic radiation and health, many doubts are eliminated. Based on human nature, it is impossible for scientific research to directly expose human body to magnetic field radiation of various intensities like experimental mice. Alternative methods include epidemiology (investigating the relationship between the distribution of disease injuries and deaths in the population and environmental factors), cell culture in vitro, animal experiments and so on. But these three methods have their own pitfalls. For example, in epidemiology, even if statistical investigation shows that electromagnetic fields are related to carcinogenesis, it cannot be pointed out whether this relationship is causal, that is, it is impossible to know whether electromagnetic fields are carcinogenic. However, the conclusions drawn from experiments on cells and animals are sometimes far from the real situation of the human body.

Wei's research on childhood leukemia mentioned earlier is a case of misuse of statistics. In fact, the correlation between leukemia and electromagnetic field is very weak, only 3% possibility, so it is not credible. On the other hand, look at the research between smoking and lung cancer, and you will know what is going on: First, epidemiological investigation shows that the possibility of smoking causing lung cancer exceeds 30%, and experts have found that carcinogens in tobacco have a clear carcinogenic mechanism through cell culture in vitro. Finally, animal experiments further verify that smoking does cause cancer. However, Wei's research is only an epidemiological survey, and the conclusion is not valid.

Electromagnetic radiation in life is actually not terrible. Electricity and magnetism are not man-made new products, but exist naturally. Lightning and magnets also produce electromagnetic radiation. For thousands of years, human beings have been accustomed to living in electromagnetic fields, in which light as electromagnetic waves is closely related to human life, and lightning seems to be an important condition for the birth of life-the synthesis of amino acids was promoted hundreds of millions of years ago, completing the most important step in the origin of life! In addition, the earth itself has a large magnetic field, and birds and fish in the water all act with the help of the earth's magnetic field. Some creatures, such as fish, can also emit strong electromagnetic fields.

In fact, electromagnetic radiation has been distinguished according to the strength of energy in medicine: high-frequency radiation is harmful and can destroy the chemical bonds of human cells and molecules, such as X-rays; Radio and household appliances will produce low-frequency radiation below several thousand hertz, which is not only harmless, but also has a certain health impact on human body.

Excitation effect of electromagnetic radiation

While scientists are trying to explore the harm of electromagnetic radiation, some research results are quite unexpected. In 1976 and 1979, two clinics near Harvard found that low-dose radiation can improve the survival rate of cancer patients by about 30% within four years. A study by Tohoku University in Japan also showed that patients who received low-dose radiation had a survival rate of 84% for 12 years, while patients who did not receive radiation had a survival rate of only 50% for 9 years.

In addition, in Canada and France of 1994 and the United States of 1995, large-scale studies have consistently pointed out that automobile workers not only have no additional cancer risk, but even have a lower average incidence rate than those who are far away from electromagnetic radiation.

A more convincing fact is that electromagnetic radiation has been widely used to treat diseases, such as depression, schizophrenia, stroke, brain edema, hypertension, Parkinson's disease and so on. So, electromagnetic radiation is not toxic, but a good medicine? /kloc-Pala Celsus, a great pharmacologist in the Renaissance in the 6th century, said: "Everything is toxic, and the dose determines whether it becomes poison." The puzzling electromagnetic radiation is such a "poison".

Since ancient times, living things have grown in natural environments such as cosmic rays and evolved the ability to adapt to low-dose radiation, which is called the excitation effect of electromagnetic radiation. Melen from the University of California? Prikov has been studying radiation shock for more than ten years. He found that low-dose radiation is beneficial to the human body in at least two aspects: first, it can stimulate the immune system and make it constantly search for and destroy cancer cells; Secondly, it can promote DNA repair. Prikov admits that all radiation, even if the dose is very low, will cause harm, but the benefits brought by the stimulation and excitement of radiation are enough to compensate and exceed the harm it causes.

Repost:

As we all know, litigation has become a common practice in the United States and Europe. You firmly don't believe the scientist's conclusion that the power frequency electromagnetic field is harmless to human body, and cite the frightening "data" of countless Guangzhou people. Excuse me, can you name any country in the world, even a case where a radiation victim of a high-voltage substation was sued and received compensation? Stop scaring yourself!

In fact, in the 1990s, American industrial giants were successfully defeated in lawsuits such as asbestos, smoking and silicone breast augmentation. American lawyers who received huge compensation once thought that "high-voltage lines and substations" were the next piece of fat, so American lawyers established "ERCET" and "Electromagnetic Radiation Damage Alliance" for this purpose. The court hired 16 top scientists. Including six Nobel Prize winners (they won the Nobel Prize in Physics, Pathology, Biochemistry and Medicine respectively) to make scientific appraisal of all the evidence. The conclusion is: "Power frequency electromagnetic field is harmless to residents' health. "This is completely consistent with the conclusions of American Academy of Sciences 1996 and American Cancer Society 1997. If lawyers are interested again, they must bow their heads in front of scientific evidence! " Proud of believing in science and ashamed of ignorance, "President Hu said very well! !

It is very serious for European and American scientific circles to conclude that the power frequency electromagnetic field is harmless. This conclusion was published in the New England Journal of Medicine, the most authoritative medical journal in the United States. The most authoritative medical magazine in Europe, British Medical Journal; And "California Supreme Court Judgment",No. S045854, No.65438+judgment of August 22, 0996, page 32 and other documents. In libraries and medical colleges in big cities such as Guangzhou, it is easy to find the original words of top scientists from all walks of life in the world, including six Nobel Prize winners. The question is: Do you believe these scientific authorities or rumors?

It takes 15 years. Many people have already done this: hundreds of thousands of people in Finland have lived near high-voltage lines for 20 years in a row, and the survey found that their cancer incidence rate is lower than that of those who do not live near high-voltage lines! 1996, in order to answer the questions of Finnish people like you, the Finnish government instructed:

Professor P.K.Verkasolo of the University of Helsinki, Finland, and experts from the Finnish Cancer Society * * * conducted a thorough survey of all 383,700 residents in Finland who lived within 500 meters of high-voltage lines during the 20 years of 1970- 1989. It is found that the cancer rate of the above population is not high, but it is 2% lower than that of Finnish residents. In particular, the lung cancer rate of these people is 7% lower than that of Finnish residents.

Residents living near high-voltage substations: You really don't have to be afraid. If you want to set the power station farther away, you might as well call it "harmful", but you must understand in your heart: "harmless" Don't forget that "a glass of bow and snake shadow" is really harmful to your health!

Let's learn from honest scientists: Ulla M.Forseen, a Swedish scientist, is a professor at Carlo Lin Si University. For many years, he has suspected that electromagnetic radiation such as high-voltage lines and substations can cause female breast cancer. His works are widely cited as evidence that "high-voltage lines and substations are harmful". However, in his research team, he has investigated 20,400 breast cancer patients and 1 16 in Stockholm in the past 23 years. A careful study of 1000 healthy women shows that electromagnetic radiation has nothing to do with breast cancer. Professor Fossing said, "We are shocked. We always thought it was related, but we couldn't find any connection after repeated inspections. " (The paper was published in the American Journal of Epidemiology not long ago, No.61volume, No.3, pages 250-259 in 2005, and was also reported in Science News on February 26th, 2005. You can go to the library for reference). It seems that some people should not generalize about individual scientists in China, citing outdated foreign materials and causing unnecessary panic among the masses.

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