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Reviewed and Approved Additionally, the Reviewed and Approved seal signifies that our scientific board of experts has double-checked this article for accuracy. The Potential Dangers of Wi-Fi 1. Contributes to the Development of Insomnia Have you ever felt more awake after using Wi-Fi or even struggled to sleep through the night? Damaging to Childhood Development Exposure to non-thermal radio frequency radiation from Wi-Fi and cellular phones can disrupt normal cellular development, especially fetal development.
Affects Cell Growth When a group of Danish ninth graders experienced difficulty concentrating after sleeping with their cell phones by their head, they performed an experiment to test the effect of wireless Wi-Fi routers on garden cress.
Derails Brain Function Just as the Danish high schoolers noticed concerns with concentration, scientists have begun to look at the impact of 4G radiation on brain function. Reduces Brain Activity in Females A group of 30 healthy volunteers, 15 men and 15 women, were given a simple memory test.
If it is possible for a microwave oven to interfere with Wi-Fi signals — I just read something like that on your blog — because they operate at the same frequency, is Wi-Fi then not dangerous to your health? Would having Wi-Fi in your home not be like leaving your microwave door open? Hermie This is a question that comes up from time to time, and the short answer is no.
In fact, we could rephrase your question and pretend that you'd asked about baby alarms, radio-controlled cars, cordless DECT phones, Bluetooth headsets, security alarms and loads of other things that operate in the same unlicensed radio frequency band without causing concern. Is having a baby alarm in your home not like leaving your microwave door open? The longer answer is that the intensity of a Wi-Fi signal is around is , times less than a microwave oven.
The oven is a targeted device that operates at very high voltages and short distances. Wi-Fi routers operate at very low voltages, broadcast in all directions, and are used at relatively long distances. Since radio waves follow the inverse square law — like light, sound and gravity — then each time you double the distance, you get only a quarter of the energy.
In other words, the signal strength falls off very rapidly. At normal operating distances, Wi-Fi's intensity is generally so low that it's not worth worrying about: it's just part of the "smog" that is generated by radio and TV signals, AC mains wiring, the motors in home appliances, and the universe in general. As my colleague Charles Arthur once pointed out here, the wavelength of Wi-Fi signals is the same as the cosmic background radiation : 12cm.
If you're worried, don't go outside. As Guardian readers know, the electromagnetic spectrum stretches all the way from very long wave radio frequencies to very short wave gamma rays, with visible light somewhere in between.
We know that types of ionising radiation with wavelengths shorter than light tend to be dangerous. Examples include ultraviolet UV rays, X-rays and gamma rays.
The ultraviolet part of sunlight is certainly dangerous. Wear sunscreen. However, the non-ionising wavelengths that are longer than light tend not to be dangerous. These include infra-red rays, microwaves and radio waves. Now, it's certainly possible to do dangerous things with radiation, even if it's just focusing the sun's rays with paraboloid mirrors to set Roman fleets on fire not that there's much call for that. It's also possible to use a high-pressure water jet to cut through steel, but that doesn't mean you'll die from taking a bath or standing under a fountain.
For more information on device testing and SAR for cell phones, go to fcc. Several US government agencies and international organizations work cooperatively to monitor research on the health effects of RF exposure. According to the FDA and the World Health Organization WHO , among other organizations, to date, there is no consistent or credible scientific evidence of health problems caused by the exposure to radio frequency energy emitted by cell phones.
For more information on the IEFP, go to who. Some health and safety interest groups have interpreted certain reports to suggest that wireless device use may be linked to cancer and other illnesses, posing potentially greater risks for children than adults. While these assertions have gained increased public attention, currently no scientific evidence establishes a causal link between wireless device use and cancer or other illnesses.
Those evaluating the potential risks of using wireless devices agree that more and longer-term studies should explore whether there is a better basis for RF safety standards than is currently used.
The FCC closely monitors all of these study results. However, at this time, there is no basis on which to establish a different safety threshold than our current requirements. Accordingly, some parties recommend taking measures to further reduce exposure to RF energy. The FCC does not endorse the need for these practices, but provides information on some simple steps that you can take to reduce your exposure to RF energy from cell phones.
For example, wireless devices typically emit more RF energy when you are using them. The closer the wireless device is to your body, the more energy you will absorb.
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