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)