I have to second this idea, any society that can survive the mass ingestion of this particular "food" should be right up there with the cockroaches is respects to surviving radiation exposure.
As for WiFi causing illness, I would most assuredly be dead by now if it were true. I have had WiFi in all it's incarnations since commercial products were first available. Full disclosure: I design, install and troubleshoot wireless data networks for businesses, schools, hotels and even cities. I have been surrounded by APs while testing and have even tested the effects of human interference on throughput ( think blocking the signal with my own body). And yet to this day I have yet to sprout any additional appendages or projectile vomit pea soup across the room.
I had the same symptoms when I was in school, well before the standards (802.11 a/b/g/n) were established. I chalked it up to the cruelty of the socially connected and the stress of trying to fit in and excel in the highest rated school system in my State.