Earlier quoted context omitted.
> But those mmWaves for 5G are much higher frequency, and they get absorbed by more materials 4G is on the order of 10^9 Hz (1 GHz), and 5G is on the order of 10^10 - 10^11 Hz. Both are non-ionizing radiation, and in the overall scheme of things, relatively close in frequency. Ionizing radiation causes cell mutation. It starts with UV radiation at 10^16 Hz. X-rays are around 10^18 Hz. We can't say with certainty that…
You know the World Health Organization lists cell phones as "Possibly Causing Cancer in Humans" right? That's the world's leading authority on human health saying that. I don't care that technically speaking cell phones "can't" cause cancer because they are thought to be non-ionizing. That's just the same as all the other things in history that have been impossible until they've been done.
Could there be some other mechanism that we don't understand yet and haven't observed yet that could be harmful? Yes, of course. But nobody has been able to provide any evidence yet.