There is a ton of information out there, should one go looking in earnest, about the dangers of EMF’s (electromagnetic fields), RF (radio frequencies, wi-fi) and also dirty electricity (from very common wiring errors). I highly recommend people peruse www.createhealthyhomes.com
Not everyone is electrically sensitive, but it doesn’t mean there can’t be a cumulative effect over time and contributing to a host of illnesses. I have one friend who is very electrically sensitive and she can walk into a house and tell if someone has their router on or not. In France they have banned wi-fi in the lower grade schools. Children especially need to stay away from these electronic devices as much as possible. There are also shielding devices one can use on all kinds of electronic devices, so that one doesn’t really have to change their lifestyle all that much to protect themselves or at least cut down on the radiation.