I don't know anything concrete about the effects of EM radiation such as radio, TV, cellular, and microwaves. I do know the atmosphere is permeated with them and they are passing through us all the time.
I noticed many years ago how well I slept in basement bedrooms and in remote places that had limited or no TV and radio reception. It was so consistent and predictable that I couldn't dismiss it as a fluke. I now have metal roofing and siding on my home and outbuildings. I sleep better but don't know if it's because of the Faraday cage or I'm just lulling myself to sleep.