Why do certain foods cause allergic reactions in some people?

Some people get a reaction when they eat certain foods because their body thinks it’s under attack.

Imagine you're playing with your favorite toy, and suddenly someone grabs it from you, that makes you feel surprised or even a little upset. That's kind of what happens to some people when they eat something like peanuts or eggs. Their body sees the food as an invader and tries to push it out.

When the invader is spotted, the body sends out special fighters called antibodies. These antibodies are like tiny soldiers who remember the invader and come back every time they see it. They cause a reaction, which might look like a rash, sneezing, or even trouble breathing.

Not everyone has these special soldiers inside them because not everyone has been exposed to that food before. Sometimes kids get this reaction when they first try something new, kind of like how you might be surprised the first time someone takes your toy, but after a while, it doesn’t bother you as much.

So, some people have reactions to certain foods because their body thinks it’s being invaded, and that’s just part of how everyone's body works differently!