With the rapid development of science and technology, electronic products such as microwave ovens, mobile phones, televisions, air conditioners, refrigerators and computer networks have realized office automation, improved work efficiency, brought convenience to families and enriched people's lives. However, these products also have two aspects, which can directly or indirectly affect health.
Electronic products emit electromagnetic waves when they work, which is also called electromagnetic radiation. Electromagnetic radiation will have a series of biological effects on people. In the frequency band of 150 ~ 1200 MHz, it can penetrate more than 2 cm into the human body, stimulate the deep cells of the body, make them rub against each other to generate heat and interfere with the bioelectric current of the body itself. Electromagnetic energy is converted into heat energy in the body, resulting in imbalance of human thermal balance; Can cause "microwave cataract"; Destroy the spermatogenic ability of testis, leading to infertility; Cause changes in cardiovascular function. Children's nervous system is very fragile. If exposed to strong electromagnetic radiation, their brains will develop slowly and their biological clocks will be disordered. For pregnant women, it is easy to cause miscarriage, premature delivery and even fetal malformation.
Italian medical experts report that 400 children suffer from leukemia every year in this country, among which children aged 2-7 are mainly caused by being too close to the electromagnetic field and being exposed to too strong electromagnetic radiation. According to Polish data, the incidence of various cancers is twice as high as that of ordinary people who are often exposed to electromagnetic radiation. The Royal Institute of Microwave Research found that the incidence of brain tumors in people who often work under electromagnetic radiation is 6.4 times that of ordinary people. Finnish medical experts have proved that female flight attendants are twice as likely to develop breast cancer as ordinary women of the same age. Medical reports in Britain, the United States and Canada also pointed out that the proportion of people on the plane suffering from skin cancer and brain cancer is very high. There are also air conditioners, refrigerators, televisions and computers that may cause different or the same diseases. Its wide scope and great influence cannot be ignored.
Experts believe that microwave radiation can induce cell chromosomal mutation and make mitosis abnormal, so normal cells become cancer cells, leading to cancer. Frequently used mobile phones will emit high-frequency electromagnetic radiation with the frequency of 400 ~ 1000 MHz, and the intensity of electromagnetic radiation can reach 800 ~ 2000 microwatts per square meter. When using a mobile phone to talk, strong high-frequency electromagnetic radiation will be generated near the transmitting antenna of the mobile phone. When using the mobile phone, get close to the head and expose the head to electromagnetic radiation. If the human body is exposed to high-intensity electromagnetic radiation for a long time, it will lead to central nervous system symptoms such as dizziness, insomnia, fatigue, irritability and memory loss, and it will also cause autonomic nerve dysfunction, resulting in cardiovascular system symptoms such as bradycardia, tachycardia and blood pressure fluctuation.
Nowadays, more than one million people use computers and computer networks every day, but the harm of computers to human body is often ignored. According to foreign surveys, 75% of operators who use computers for a long time have poor eyesight, tired eyes, dry eyes or tears, fatigue, anorexia, memory loss, headache and brain swelling. In particular, children's fascination with computers makes them irritable, withdrawn and selfish, which affects their normal development.
Also, during the SARS period last year, people's awareness of disinfection was enhanced, and some people used ultraviolet rays for disinfection. But if used improperly, ultraviolet rays will harm people's eyes. Experts say that excessive ultraviolet radiation can cause burns to the skin, and long-term exposure may even cause skin cancer.
At present, we cannot do without electronic products. In order to avoid their harm, we should master scientific methods and take certain protective measures to avoid doing harm to our bodies.
1. Strengthen the publicity and study of health knowledge and enhance the awareness of protection.
2. Operate in strict accordance with the instructions.
3. Electrical appliances should be placed in proper positions.
Children, pregnant women and the infirm should strictly control the time and distance of watching TV and playing computer.
5. Take part in more physical exercises to enhance physical fitness.
6. In terms of diet, you can eat more foods containing high protein and vitamins, such as beans and spirulina foods, and the food mix is reasonable. (Chief Physician, Immunization Center, Feng Lida Navy General Hospital)
China net March 2004 10
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What is electromagnetic radiation?
Alternating changes of electric and magnetic fields produce electromagnetic waves. The phenomenon that electromagnetic waves are emitted or leaked into the air is called electromagnetic radiation. Excessive electromagnetic radiation causes electromagnetic pollution.
Electromagnetic pollution source
1the results of the national electromagnetic radiation environmental pollution survey ended on may 8, 1995 show that the pollution sources of the five major systems are investigated: there are 0,235 radio and television transmitters with a total power of 654.38+0.2 MW; Engineering medical equipment *** 15335, 3 earth satellites; The number of "mobile" base stations is nearly 30,000; High-voltage transmission and transformation wires radiate or leak electromagnetic waves like cobwebs in the air. We live in a huge microwave oven.
Harm of electromagnetic radiation:
1998 the latest survey by the world health organization shows that electromagnetic radiation has five major effects on human body:
1, electromagnetic radiation is the main inducement of cardiovascular disease, diabetes and cancer mutation;
2. Electromagnetic radiation causes direct harm to human reproductive system, nervous system and immune system;
3. Electromagnetic radiation is the inducing factor of abortion, infertility and teratogenesis in pregnant women.
4. Excessive electromagnetic radiation directly affects children's tissue development, bone development and vision decline; The hematopoietic function of the liver is decreased, which can lead to retinal detachment in severe cases.
5, electromagnetic radiation can make male sexual function decline, female endocrine disorders, menstrual disorders.
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Harm of electromagnetic radiation to human body
According to the latest statistics of the Fifth National Science Conference held in the Great Hall of the People in Beijing on October 22nd, 2000, nearly 1 1.2 million of the more than 20 million newborns born every year in China are defective. Experts point out that electromagnetic radiation is the most harmful factor leading to infant defects.
Electromagnetic radiation is the inducing factor of abortion, infertility and teratogenesis in pregnant women.
1 March is the embryonic period, and strong electromagnetic radiation may cause limb defects or deformities.
Exposure to electromagnetic radiation during the fetal development from April to May may lead to hypoplasia and even dementia in Chile.
6 to 10 months is the period of fetal formation. Exposure to electromagnetic radiation may lead to low immune function, weak body and poor resistance after birth.
Current situation of environmental pollution sources of electromagnetic radiation in China1closed on May 8, 999: 10235 radio and television transmitter, total power10.3 million kilowatts; *** 15335 engineering medical equipment, 3 earth satellites and nearly 10,000 mobile base stations; High-voltage transmission lines like spider webs in the air are emitting leaked electromagnetic waves. We live in a huge microwave oven.
In recent years, domestic and foreign media have reported that electromagnetic radiation is harmful: more than 400 children in Italy suffer from leukemia every year, and experts believe that the cause is serious electromagnetic pollution; A cancer medical foundation in the United States sampled some patients injured by electromagnetic radiation. The results show that the growth rate of cancer cells in people working near high-voltage lines is 24 times faster than that of ordinary people. Of the 20 million children born every year in China, 350,000 are disabled children, of whom 250,000 are mentally retarded. Some experts believe that electromagnetic radiation is one of the influencing factors.
Electromagnetic radiation causes abortion and teratogenesis.
Nowadays, electromagnetic radiation involving all walks of life has become the fourth largest pollution after air pollution, water pollution and noise pollution. With the accelerated development of social economy, electromagnetic radiation pollution is becoming more and more serious. How to reduce the harm of electromagnetic radiation to people, especially to pregnant women and fetuses, has become a major eugenic topic.
In the process of preventing electromagnetic radiation pollution, countries all over the world have always given priority to reducing the harm of electromagnetic radiation to pregnant women and fetuses. In 1998, the World Health Organization (WHO) further pointed out in its latest revised Opinions on Computer Screen and Workers' Health that some factors in the working environment of computer screen may affect pregnancy results. In recent years, experts in China are also collecting cases in this field to put forward corresponding effective countermeasures. For example, an obstetrician in a famous hospital found that two women worked in front of a computer screen for a long time, but they still did not leave their original jobs for many reasons after pregnancy. As a result, they both gave birth to twins. A young factory worker in Shanghai changed his job at 1993 and became a pager. I was pregnant in March, and when I went to the hospital for examination in July, I found that the fetus had died. In addition, the proportion of irregular menstruation and spontaneous abortion in female pagers is also relatively high. Doctors and experts believe that these conditions may be directly related to long-term exposure to electromagnetic radiation and should be highly valued.
The latest research report shows that the abortion rate of women who use computers for more than 20 hours a week in the early pregnancy increases by 80%, which also increases the birth rate of deformed fetuses. Therefore, it is best for pre-pregnancy and early pregnancy women to stay away from mobile phones and computers as much as possible. Experts suggest that, first of all, pregnant women and pregnant women should temporarily stay away from video posts such as computers and televisions. If there are difficulties, it is best to leave this working environment temporarily during the first three months of pregnancy, that is, during the formation of fetal organs; Those who are still in this position must wear special protective clothing. Even if a pregnant woman who works in an electromagnetic radiation environment for a long time successfully gives birth to a baby, the baby's intelligence and physique may have been damaged, which will have irreparable consequences. In addition, the home is a place where electromagnetic radiation is concentrated, so newly married, pre-pregnant and pregnant women should stay away from microwave ovens, televisions and computers indoors, and if necessary, they can wear special protective clothing specially designed to shield electromagnetic radiation. 2. Beware of electromagnetic radiation hurting the fetus. A large number of animal experiments and investigations at home and abroad show that electromagnetic radiation is harmful to human body in many ways, especially to fetus. Specifically, 1 to 3 months is the embryonic period, and excessive electromagnetic radiation may cause limb defects or deformities; April to May is the period of fetal formation, and electromagnetic radiation may cause mental damage and even dementia. 6 ~ 10 months is the fetal growth period, and the main consequences are low immune function, weak constitution and poor resistance after birth. Therefore, if we do not attach great importance to this new pollution problem, it may endanger the healthy growth of the next generation and cause irreparable losses to the country and families.
To this end, experts advise pregnant women to temporarily leave video posts such as computer operation. If there are difficulties, it is best to temporarily transfer from the post during the first three months of pregnancy, that is, during the formation of fetal organs. Those who are still working in this post must wear special protective clothing. Unmarried, newly married women and pregnant women who work in front of the display screen should also insist on wearing protective clothing. The home is also a place where electromagnetic radiation is concentrated, so it is recommended that newlyweds and pregnant women stay away from microwave ovens, televisions and computers, and wear protective clothing to shield electromagnetic radiation when necessary. In order to help pregnant women effectively prevent electromagnetic radiation and ensure the safe birth of babies, pregnant beauty clothing Co., Ltd. introduced high-tech metal fiber technology from Japan and successfully developed fashionable radiation-proof underwear-pregnant beauty radiation-proof series clothing, which is soft, breathable, wear-resistant and comfortable. It can absorb more than 99% of the electromagnetic radiation energy through the metrological scientific detection in China, which fully conforms to China's electromagnetic radiation protection standards and is suitable for both units and families.
Attachment: Radiation amount of household appliances
Speaker: 20 mg
Refrigerator: 20 mg
Television: 20 mg
Air conditioning: 20 mg
Washing machine: 30 mg
Vcd: 30mg
Copier: 40 mg
Computer: 150MG
Vacuum cleaner: 200mg
Microwave oven: 200mg
Mobile phone: 200mg