Reply to s/o Where did all the food allergies come from?

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[quote=Anonymous][quote=Anonymous][quote=Anonymous]Probably the result of more and more people being able to survive in rich and developing countries. Before people with these genetic difference would die off before they could bread more weak people. [/quote]

As best we can tell, the predisposition to allergies is genetic but the specific allergen isn’t. There’s no “peanut allergy” gene, there are “more likely to get asthma/eczema/allergies” genes. So we think there is probably something developmental or environmental that makes kids more likely to develop those issues now than a few generations ago.

Also what the other person said, two generations is way too short for selection to work like that. [/quote]

Fascinating! Like a PP mentioned, I was born in 1970 and had eczema beginning at 6 month’s supposedly when my mom switched from BF to Enfamil. From then on it was tomatoes and chocolate and seasonally (winter) that I’d be plagued with eczema. Then at age 4 I developed an anaphylactic (although didn’t know the term) to fish. 2 ER trips before being told to take then-prescription Benadryl if I had a reaction and to avoid all fish.

My 3 DC all have anaphylactic allergies to peanuts/cashews/walnuts and youngest who previously had no allergies (age 16) just had a scary reaction/anaphylactic to a dye in off brand Gatorade.[/quote]

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