“I know the allergy is quite real but is there any science explaining why?”
I have a theory that it’s related to infant formula.
Anecdotal I know but my 100% breast fed son has a peanut allergy.
And I think it’s silly to punish everyone else for his problem. He simply avoids peanuts. If it was so bad he couldn’t even be near peanuts we would have removed him from the environment rather than ask the majority to accommodate his individual needs. That’s just selfish!
My whole family has allergies, so the fact that my daughter has allergies is not surprising.
However, there certainly does seem to be some kind of allergy increase in the general population. When I was a kid I don't remember anyone not being able to eat something because they might die.