Some people appear to be sensitive to the energy thrown off by various man made items but there are many who don't appear to be sensitive. Because some of the effects of the sensitivity mimic those of many illnesses (serious and not), some people may live for many years before they rule out everything else with the assistance of a Dr. and find that they are sensitive to things like having 24/7 WiFi, cordless phones, and overhead electric towers at their home.
There are some healthcare personnel and scientists that say those most at risk from serious health problems are children and pregnant mothers. However, if anyone is experiencing mind fog, inability to concentrate, and a constant fatigue and has ruled out everything else with the help of a Dr., they might want to unplug the WiFi and cordless phones at home among other things and see if this new routine produces some good effects. It doesn't cost a thing to try.