Giving more peanut butter to people might discover an existing allergy, but I was under the impression that more exposure to allergens lowers the risk of the immune response to the allergen. That's the idea behind allergy shots.

I'm not a doctor, though, so some clarification on that would be helpful from anyone who knows more than I do.

That doesn't explain the massive increase in wealthy children with these allergies.

Which is entirely contrary to the results of this research, which indicates that exposure to peanut proteins at a young age radically reduces peanut allergies.