Interesting article. I was born in 1940 and had developed allergies by the time I was 5 or 6. I did not see an allergy specialist until I was almost 30. He explained a lot about what had been happening to me my entire life.
I learned how to figure out what caused my symptoms and what to avoid.
I was born allergic to milk and almost died. The allergy disappeared and now I love milk.
I know a little boy with severe food allergies, won’t go into too much detail. He has other issues too. His mother has worked on his tolerance and he, now, is able to eat things that, 3 years ago, would have landed him in the hospital. He has an epi-pen in his backpack and she has one on her at all times.