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 100,000 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.
Wi-Fi: are there any health risks? | Technology | guardian.co.uk
