What kind of modulation is good, and what kind is bad? (When the radio DJ plays Vivaldi, is it worse for you than when he plays Wagner?) What polarization is good, and what is bad? What frequencies are good or bad for you? What signal-to-noise ratio is good and which is bad? Saying that these things cause health problems in themselves is rash and very unlikely to be true. After all, lightning contains every frequency from DC to daylight, and, unless it hits very, very close to you (enough to cause heating), it has zero effect on human health. And the fields that lightning produces, even at a mile away, are vastly greater than anything riding in on your power line.