Professor Zhao Yufeng, member of the Expert Committee on Environmental Impact Assessment of Electromagnetic Radiation of the State Environmental Protection Administration: From the international research, there are two theories. One is thermal effect, which simply causes a rise in body temperature, and then produces some changes in body functions, such as headache, insomnia, dreaminess, memory loss and cataracts in the eyes of the central nervous system. There is also a non-thermal effect. Such as hemogram, electrocardiogram. Your temperature has not risen, so it is meaningless to explain it by thermal effect. Therefore, if we use non-burning heat, some developed countries, especially the United States, Britain and Germany, also recognize the mechanism of non-burning effect. Cao, a researcher at the Institute of Environmental and Health-related Product Safety of China Center for Disease Control and Prevention, clearly stated that mobile phones are harmful to human health at present. Researcher Cao said: "From the relevant research, different experts may have different opinions. As far as I know, the influence of mobile phone radiation on health should be more and more clear, including three aspects: first, the relationship between mobile phone and tumor, second, the influence of mobile phone on neurasthenia, causing some symptoms of neurasthenia; Then there are other diseases related to the central nervous system. You have a report, that is, a report from Sweden or some country, that is to say, after using (mobile phone) for more than 10 years, his incidence of brain tumor has increased fourfold. The most authoritative one is that in 2004, the European Union released a research report on REFLEX, which mentioned the electromagnetic radiation of mobile phones. In fact, even if it is lower than the relevant standards, its damage to (human) DNA is more obvious. " A few days ago, a new study showed that the influence of electromagnetic radiation released by mobile phones on brain cells was 20% higher than previously estimated.
This research was conducted by the Department of Applied Physics of Compton University in Madrid. Professor Sebastian, the person in charge, pointed out that the data obtained by the existing methods underestimated the impact of radiation on human tissues. It is estimated that the legacy of electromagnetic radiation will continue to accumulate. After 10 to 15 years, there will probably be more cancer cases caused by the popularity of mobile phones.
A few days ago, in Europe's largest mobile phone radiation test concluded in Switzerland, according to the results released by the tester-Swiss Institute of Technology, among the 28 brands of mobile phones currently sold in Europe, Ericsson T28s released the highest radiation, the lowest was Nokia 8850, and the highest radiation was six times the lowest.
Many experts believe that this test in Switzerland is more accurate than previous surveys. Cao Hongwei, a professor of biochemistry at the Hong Kong University of Science and Technology, said that the Swiss research on mobile phone radiation is more accurate than similar tests conducted in other countries in the past, and has reference value. However, Cao Hongwei also said that whether the radiation emitted by mobile phones will cause harm to the human body and the extent of the radiation impact are still inconclusive internationally, and all the test and research results can only be used as a reference for consumers.
Experts say that it is impossible to provide mobile phone users with an "absolutely safe" way to hold their mobile phones, and the distance between the top of the mobile phone antenna and the earphone is too long or too short, which will increase radiation. The only way for mobile phone users to cope is to use their mobile phones as little as possible or shorten the time of talking to them, and try to keep their mobile phones away from their bodies when making calls.
Source: Scientists have never given a clear answer to whether people's mobile phones are harmful. The latest research by EU scientists confirms that cell phone radiation will destroy cells and DNA that record human genetic information.
Most brands of mobile phones radiate too much.
The world's largest mobile phone radiation survey, entitled "Effects of electromagnetic fields on human cells", was completed by 12 research teams from seven EU countries for three years. Experts have found that if the radiation of mobile phones to human tissues is greater than 1.3 watts per kilogram, it will destroy human DNA, but now the generally stipulated radiation limit is 2 watts per kilogram. Tests show that the radiation of many brands of mobile phones exceeds1.3W. ..
In addition, the German research team also found the influence of mobile phones on blood genes. They say that electromagnetic fields can cause a harmful protein, and this protein can cause genetic changes in human blood cells. The Swedish research team also found that cell phone radiation can lead to protein deposition, which may induce Alzheimer's disease. British experts also warned that mobile phones may release toxic mercury gas, induce multiple sclerosis, endanger fertility, and lead to premature aging and amnesia.
Whether it damages organs is still inconclusive.
However, although experts believe that mobile phones can damage DNA, they use the word "possible" when it comes to specific health hazards. Dr Fei Crnel from the teaching hospital of Humboldt university in Berlin said: "At present, we have not found strong evidence of whether cell phone radiation will cause harm to human organs."
Although there is not enough evidence that mobile phones will damage human organs, many European biologists, doctors and environmental experts advise people to use mobile phones carefully. They believe that in order to realize the communication function, the mobile phone must constantly contact the transmitting base station, which will inevitably receive and send strong communication waves, so it will definitely have a negative impact on the human body. Professor Lu Diegel of Vienna suggested: "It is best to use less mobile phones; If you must use it, please go outside or near the window, or use headphones. " German "Health" magazine believes that wrapping a ceramic or metal shell outside the earphone cord of a mobile phone may help reduce the radiation of the mobile phone.
This study has attracted the attention of WHO.
For this major mobile phone manufacturer who claims that its products are safe, Ms. Marin, the head of the German Consumers Association, believes that the most important thing now is to give consumers a control standard on mobile phone radiation. Now many European consumers think that mobile phone radiation is harmful to health, because so far, no company has dared to stand up and deny the connection between mobile phone and health.
It is reported that this survey has attracted attention, and the organization said that they will release an authoritative mobile phone radiation report within 3-4 years. By then, there will be a clear authoritative statement about the relationship between mobile phone radiation and health.
The health topic of mobile phone radiation has once again attracted people's attention. According to Xinhua News Agency, a new medical study in the United States shows that men who use mobile phones for more than 4 hours a day not only have 40% less sperm than men who use mobile phones less, but also have poor quality and lower fertility.
It is also reported that China's mobile phone radiation standard will be issued this year. How to make a phone call scientifically and healthily? Can cell phone radiation be avoided? Is it really a problem that convenience and health cannot be both?
For this reason, the reporter interviewed Liang Qian, an associate professor at the Institute of Wireless Communication who has been studying the radiation problem of mobile phones for a long time, and Jin Xipeng, a professor of occupational health and toxicology at the Institute of Public Health, to listen to their views on the radiation of mobile phones.
Cell phone radiation is a health killer?
In today's society surrounded by microwave communication, modern people's love and hate for mobile phones may be complicated. People can't live without the convenience brought by mobile phones, and they are also worried about the harm of "radiation" to health.
Research shows that when people turn on their mobile phones, they will send radio waves to the mobile phone base station, and any kind of radio waves will be absorbed by the human body more or less, thus having such an impact on human health. This process of electromagnetic wave spreading outward is called cell phone radiation.
Jin Xipeng, a professor of occupational health and toxicology at Fudan University School of Public Health, pointed out that although there are still some debates in the medical community about whether cell phone radiation will cause major diseases such as tumors, it has been confirmed in previous animal experiments that cell phone microwaves have certain characteristics: the more water content, the greater the damage. Long-term use of mobile phones will affect people's nervous system, heart and eyes.
Liang Qian, an associate professor at the Institute of Wireless Communication of Shanghai Jiaotong University, told the reporter that the mobile phone is a signal transmitter with a certain power, and the maximum power is about 1 watt. However, because mobile phones are often "close" to the human brain, people should be alert to the cumulative effect of radiation from the perspective of health. To this end, we should start from some details in life to reduce the damage of mobile phone radiation to health.
Six habits are unhealthy.
First, hang your mobile phone around your neck or waist.
Liang Qian told reporters that the radiation range of the mobile phone is an annular belt centered on the mobile phone, and the distance between the mobile phone and the human body determines the degree to which the radiation is absorbed by the human body. Therefore, people and mobile phones need to maintain the "beauty of distance."
Some medical experts pointed out that people with cardiac insufficiency and arrhythmia should not hang their mobile phones on their chests. If the mobile phone is often hung on the waist or abdomen of the human body, it may affect reproductive function. A healthier and safer way is to put the mobile phone in the carry-on bag and try to put it on the outer layer of the bag to ensure good signal coverage.
Second, put the phone close to your ear when dialing.
When the phone is dialed out but not connected, the radiation will be obviously enhanced. At this time, you should put your mobile phone away from your head and talk again after about five seconds.
Third, the weaker the cell phone signal, the closer the ear is.
When the cell phone signal is weak, many people instinctively put their cell phones as close as possible to their ears. However, according to the working principle of the mobile phone, when the signal is weak, the mobile phone will automatically increase the emission power of electromagnetic waves, which will obviously increase the radiation intensity. At this time, the ear is close to the head, and the radiation received by the head will increase exponentially.
Fourth, "one ear" and "mobile phone porridge".
Studies have shown that long-term continuous radiation may affect the brain. Experts suggest that it is not advisable to talk on a mobile phone for a long time. Consider switching to a landline or using headphones. If you have to talk directly on your mobile phone for a long time, you should also rotate your ears every one or two minutes.
5. Personal phone "whispering in the corner".
For calls involving private content, many people like to hide in the corner of the building to answer them. Generally speaking, the signal coverage in the corner of the building is poor, so it will increase the radiation power of the mobile phone to a certain extent. Similarly, be careful in narrow and closed environments such as elevators.
Six, east sway west walk, frequent movements.
Some people like to move around unconsciously when they are talking on their mobile phones, but they don't know that frequent moving positions will cause fluctuations in the strength of the received signals, leading to unnecessary short-term high-power transmission.
In addition, in order to avoid too frequent area switching, the mobile phone may designate a high-power base station with wider coverage to provide services, and its transmission power will increase due to the increase of transmission distance.
Third radiation protection is particularly necessary.
Liang Qian told reporters that the transmitting power and radiation intensity of mobile phones will be different under different conditions. In order to avoid the harm of mobile phone radiation as much as possible, in addition to the above details, in the following three cases, mobile phone radiation will reach a high intensity, so pay special attention:
When the computer is turned on. When the mobile phone is turned on, the power will reach the peak and the corresponding radiation value will reach the strongest. So after pressing the power button, stay away from the phone and take it later.
It is raining. Rain will weaken electromagnetic waves in the air. Under the effect of this "rain decay" phenomenon, both mobile phones and base stations need to increase the transmission power to maintain the communication quality, which leads to the increase of electromagnetic wave radiation intensity, and the increased radiation power will be absorbed by the human body in a certain proportion. Therefore, try to avoid using mobile phones in rainy days.
The moment you connect your phone. At the moment of power-on, the radiation of mobile phone will suddenly increase, and then decrease rapidly after a few seconds to maintain a stable state. So at the moment of connection, the phone should stay away from the head.
Eight categories of people should use mobile phones less.
First, patients with epilepsy. The electromagnetic waves generated by mobile phones around the user's brain are 4 to 6 times that of space electromagnetic waves, and a few inferior mobile phones are more likely to exceed 100 times, which may induce epilepsy.
Second, patients with heart disease. Experiments show that the electromagnetic wave of mobile phone can make ECG abnormal. Patients with heart monitors should use their mobile phones with caution, otherwise the monitoring results may be affected.
Third, severe neurasthenia. Long-term use of mobile phones may aggravate neurasthenia symptoms such as insomnia, forgetfulness, dreaminess, dizziness, headache and irritability.
Fourth, cataract patients. The electromagnetic wave of mobile phone may increase the temperature of eyeball lens, cause edema and aggravate the condition of cataract patients.
5. Patients with hyperthyroidism and diabetes. Electromagnetic waves released by mobile phones may lead to endocrine disorders, which may aggravate endocrine disorders such as hyperthyroidism and diabetes.
Six, pregnant women and breastfeeding. Early pregnancy is an important period of embryonic tissue differentiation and development, and the fetus at this time is most vulnerable to the influence of internal and external environment. Severe electromagnetic radiation not only has teratogenic effect, but also may lead to endocrine disorder of parturient and affect lactation.
Seven, children and adolescents. Cell phone radiation may affect children's brain development, and may induce brain tumors in severe cases.
Eight, the elderly over 60 years old. Electromagnetic waves will hinder the normal operation of the brain of the elderly.
1. Does cell phone radiation affect human body?
The internationally accepted influence of mobile phone radiation on human body is defined as "specific absorption rate", which is mainly manifested as "thermal effect". Is the impact harmful and how big? Regrettably, internationally, so far, there is no definitive conclusion. Can only helplessly wait for the event to prove. China did not consider the new communication mode of mobile phone when formulating standards. At present, radiation safety standards for mobile communication equipment are being formulated.
2. Will radiation enter the ear along the earphone of the mobile phone?
You can't. Headphones output audio signals, which are separate from radio frequency signals. Moreover, the length of the headphone cable is very short relative to the audio length, so there can be no * * vibration around the headphone cable.
3. Can the anti-magnetic sticker prevent radiation?
Not at all. The radiation source is an antenna. How can the so-called anti-magnetic sticker be attached to the listener? Some people say that it is not enough to stick an anti-magnetic sticker on the antenna. In fact, that will change the magnetic field around the antenna, and the phenomenon is that the call cannot be carried out normally. A simple truth, if the anti-magnetic sticker can prevent radiation, big mobile phone manufacturers will not miss this market opportunity. The cost of anti-magnetic stickers on the market does not exceed one yuan. [/color][/size]
4. When does the mobile phone radiate the most?
When the mobile phone is first connected, the instantaneous power is relatively large, so the radiation is also large. Especially for mobile phones, you must be "short".
5. Will the mobile phone antenna in the fuselage increase radiation?
No. Because only the position of the antenna on the mobile phone has changed, but the antenna material and impedance have not changed. In addition, radiation is not directly related to the size of the mobile phone.