Wi-Fi signals can cause headaches and other ailments

Five years ago, stories in the national press claimed 2% of the UK population suffered from ‘electrosensitivity’, and that signals from Wi-Fi networks caused those people to suffer headaches and other symptoms.

There is no medically-recognised condition called electrosensitivity. The 2% figure was made up. Wi-Fi signals operate on a small, very crowded part of the electromagnetic spectrum. In tests, supposed sufferers were unable to identify whether a Wi-Fi device was operating nearby. Signals sent and received by Wi-Fi routers are very low energy, and they are not capable of producing the kind of biological reaction claimed by some.