Would answer carefully. In accordance with the available ideas about EMP, it does not have a direct effect (the power is too low). But we must understand that we live in such a dense electromagnetic field relatively recently, some 15-20 years, and in biology, however, as in physics, people are far from clear and understandable. Once the radioactivity was unknown and pendants were made with radium. So let's wait and see (but rather our children and grandchildren will see)
If you think that Wi-fi and electricity are true evil, a tool for zombifying a nation or a source of an infinite number of diseases, then, of course, the router will have a negative impact on you. Even if it's turned off or it's not a router at all, but, for example, a dummy router or a box of cookies forgotten by your relative. Damage of this kind, associated with worries about the harmfulness of radiation from wi-fi routers, is the most serious.
An average router consumes power of about 10 W, the radiation power does not exceed (and usually much less) 50 mW. A microwave oven uses approximately the same frequencies as a router, while its power is many times greater than a router. Experiment: Place a large bowl of soup in the microwave and watch the time it takes for the soup to heat up. The resulting time is clearly more than one minute. For something to be done to a person 400 times larger than a bowl of soup, and because of the radiation 10,000 times less than that of a microwave, it obviously takes no less than 400 * 10,000 minutes, i.e. more than seven years. In reality, however, all estimates here are overestimated, for example, a person absorbs only a small fraction of the radiation from a router that propagates in different directions, the power quickly decreases with distance, due to losses in order to heat something with less power, it takes more time, etc. .
Conclusion: in order for the harm from a router to become significant, you need to work next to it 24 hours a day for many years without interruption, and at the same time charging for a mobile phone will kill you much faster.
First, it is worth understanding why a router, phone, laptop, microwave oven can be harmful to health.
Without going into details, then all electrical devices are sources of an electromagnetic field. EMF is a special type of matter that affects the nervous (burnout syndrome), immune, endocrine, and reproductive systems. The biological effect of exposure to EMF can accumulate, with prolonged exposure to powerful EMF, blood cancer, brain tumors, and hormonal diseases are possible. EMF is especially dangerous for children and pregnant women.
In order to reduce the effect of EMF on a person, shielding is used, reducing the exposure time, increasing the distance to the source of the EMF.
The devices you use in everyday life are not dangerous to humans, if you follow simple rules:
1) Position the router at a distance of more than 0.5 m from the workplace, bed. Turn it off at night.
2) During dialing (when there are beeps), do not lean the phone to your ear. Use a headset when talking.
3) Do not work with laptops on your lap. Especially men.
4) Do not monitor rotating food in the microwave (even if you are very hungry).
5) Do not walk under power lines.
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written above is possible only if you try.
If you directly answer the question, then no, it does not. A trolleybus passing through the window "irradiates" you with electromagnetic radiation even more powerful. Of course, if we are talking about a working and certified router.