eli5: Why does our immune system suddenly react safe substances making us allergic?

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So let’s say you’ve been eating nuts your whole childhood. You have had nuts added to different types of food. Your body has been exposed to nuts for quite a while.

What changes, for you to suddenly wake up one day and be allergic to nuts?

In: Biology

3 Answers

Anonymous 0 Comments

As far as I know, it’s a current field of research. The entire process of how allergies suddenly start out of nowhere in someone’s life is not well understood yet. We do understand how an allergen eventually triggers an allergy, but why the body suddenly starts considering a certain molecule as an allergene, I don’t think we have an answer for that. But I might be outdated in this knowledge, that was the consensus some years ago when I was still in college.

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