It's not new. It started to be noticeable with smart meters some years ago and there was a poster on here who was allergic to smart meters.

EMFs do interfere with humans. The extent depends on a person's make up, the type of EMF and the dosage.

Ya'll know about the guy who worked on the antennas at the Empire State Building that died from leukemia right? There are myriad warnings by transmission towers, boat radars etc.

More down the rabbit hole, there are whistle blowers who claim they have been targeted by EMF weaponry.