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.

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