Magda Havas PhD and colleagues at the Environmental and Resources Studies Dept. at Trent University, Canada, showed that 40% of 25 generally healthy volunteers showed marked increases in heart  rate, arrhythmias, and other disturbances in heart rate variability following exposure to a cordless phone base station actively emitting 2.41 GHz pulsed microwave signals.  This is the frequency emitted by many wireless routers and other WiFi technology.

You may want to convert your phones to corded and your WIFi to corded (we have made both changes at the office).  Avoid coffee shops and hotels with free WiFi if you are sensitive and having cardiac problems.  You may want to avoid these places even if you aren’t having any health problems because these frequencies are untested for other health problems at this time.  For more info,  go to and check out the interview with Dr. Havas.