It all depends on what wavelength we are discussing. X rays and UV damage DNA. (High Power) IR heats things up and cooks cells.
Longer wavelengths are the subject of lots of alarmist stuff about health. It's hard to distinguish the good information from the bad in that regard.
It's largely a matter of fashion and the latest fads but I wouldn't reject it all out of hand.. My personal theory is that poor health is very much correlated with poor housing. Expensive housing areas do not have so many power distribution cables and high power radio transmitters. So there you have a possible correlation without, necessarily a causal relationship