I'm 1000% percent convinced that the vast majority of all chronic health problems are in fact due to (at least low-grade) inflammation, though I believe that it isn't JUST the food supply, since I actually think the body can be quite resilient.
I blame vaccines on the vast majority of chronic inflammation. Peanut allergy was almost non-existent, but at some point the number of people who go straight into anaphylactic shock from even a scent of peanut became remarkably high. I recall taking cookies in for break time in Kindergarten and we often took in peanut butter cookies, and NOBODY was allergic.
Well, at some point they started packing peanut oil into vaccines, and then the vaccines induce a state of inflammation, which the body then associates with peanut. They began adding peanut oil as an "adjuvant" in vaccines in the mid-1960s. Autism is due to serious inflammation from vaccines, but so many others struggle with lower-level inflammation even if they don't become openly autistic.