How do histamines work, and what biological reason is there for them making you sick or killing you?

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How do histamines work, and what biological reason is there for them making you sick or killing you?

In: Biology

They’re part of your immune system, among a couple of other things. They cause inflammation which is part of your body’s response to something it doesn’t like as that helps get rid of things and starts the healing process.

If your body *over*reacts to something, then that is what is dangerous.