Seriously, it's gotta be something changing in the environment, or something humans have caused.
Older people like ur grandparents ages werent suffering back then with chronic allergies like we see today. The older people in my family werent popping an allergy pill everyday. But you go to the store now, or turn on the TV and all you see is Claritin, Zyrtec, Allegra, Benadryl commericials & products, Flo-nase and all other types of nasal spray.
But if you don't take those, you can develop sinus infections or just feel like shyt in general b/c of allergens. And it's year round now, not just seasonal
It is the food, pesticide, herbicide, insecticide, fungicide laden modern food, which is really poison. GMO is another issue.
Babies are being born primarily through c sections not vaginal as it was designed.
Ultra sterile modern environments, we need exposure to dirt to get the good probiotics. Search leaky gut.
Ubiquity of plastics is another culprit.
Pollution of course; tailpipe exhausts from cars alone produce close to 80 pollutants such NOx, VOC's, particulate matter. ozone depletion.
it is a mess frankly, I'm surprised we all aren't dead by now, its coming though.
Anyone planning to have kids in this despoiled and soon to be destroyed earth is woefully uninformed. We headed down a cliff edge.