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What is a food allergy?

If somebody might be reacting right now, don't wait for me — call your local emergency number. Open the emergency screen

An allergy is the body's defence system getting a food badly wrong — which is a different thing from disliking a food, and a different thing again from an intolerance.

Who is reading?

Same page, two ways of saying it. The kids' version is shorter and Ezzie tells it — but nothing frightening has been taken out, because leaving it out is how a child ends up surprised by it.

Before you read on

This is general education, not medical advice and not a medical device. It cannot tell you what anyone is allergic to, what is happening to them, or what to do about it — that is between them and their own doctor.

Hello, I'm Ezzie. I want to tell you about food allergies, because they are quite strange and quite important and not at all frightening to talk about.

Your body has a little army inside it whose job is to fight off things that could make you poorly. In somebody with a food allergy, that army gets muddled and decides an ordinary food is an enemy. Then it charges at it. That's the whole thing, really: a very keen army making a mistake.

It isn't the same as not liking a food. I am not keen on cucumber, but cucumber has never once charged at me. Nobody picks an allergy and nobody can be persuaded out of one.

Some people get poorly from a food without an allergy being involved at all — that's called an intolerance, and it means their tummy finds the food hard work. It's still horrible. It just works differently, and it gets looked after in a different way.

Allergies can turn up at any age, even in a grown-up who has been eating something for years. And a tiny bit can be enough for some people, while others need a lot. Bodies do not all agree with each other.

Cooking doesn't sort it out. Heating a food up, or freezing it, or hiding it in a sauce, doesn't take the allergy bit out — my gills are useless and even I know that much.

Nobody catches an allergy from anybody, and nobody brings one on by being fussy. It's just something a body does, and it isn't anybody's fault.

I can tell you what allergies are. I can't tell you what's going on with you or with anybody you know — for that you'd want a doctor, who can actually have a proper look.

Questions this page raises

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