Greg Canton, past owner of one of the world's largest cancer websites (sitting in jail for some time now) told me several years ago that when he went to get his Ham Radio License, the last lesson to go as far as an amature can go, was taught that for each license the FCC hands out for frequencies to be used commerically, the childhood brain cancer level goes up. The FCC had no problems with that, because licenses means $$$$$.
Sadly, we are all effected by commerical frequencies.