The impact is for sure, it remains a matter of field strength, frequency and exposure time. The higher the frequency, the more serious the matter. If you could rest next to a working radar, you would not have to go to the hairdresser and take care of your offspring anymore. But these are extreme stories.
We saturate the space with more and more frequencies, so it's probably a matter of time when it will bounce back. But neither our generation nor the next generation takes time. Although who will say, or if someone has a headache, it is from EM or crap food, or maybe from general nerves ...
And there is no research, and maybe there is, but we are talking about such a cash register that companies and rulers will stand on their heads to prove to everyone that the problem does not exist. And during the communist regime it was so that when you worked in certain institutions, and not with the spinning radar antennas, you had to have compulsory tests EEG ... that is, as if some problems were reckoned with ... but it was during the communist regime ...
I am not some special believer in conspiracy theories, but money rules and nothing can be done about it ...
There was once a topic about shielding a cottage, just standing in the immediate vicinity of the mast. People wanted to buy special meshes or plaster shielding mats, probably produced in Germany. They're doing it there, so maybe there's something to it.
But what about the nets, as the owner can bask in the signals from several multi-antenna APs on 5GHz in a moment, because from one of the coverage is too little - and this throughout the stay at home. And if it was a block, it would be from all the neighbors around.
And so easy - asbestos was once considered a brilliant material ... until ...