Why do certain foods trigger allergic reactions in humans?

Some foods act like troublemakers when they enter our body.

Imagine your body is like a club, and allergies are like the bouncer who doesn’t always know who to let in. When you eat something that’s new or special, it sends out tiny messengers called antibodies to check if this food is friendly or not.

Sometimes, your body thinks this new food is a bad guy, even though it's just trying to be nice. It gets so upset that it starts a big fight, making you sneeze, cough, or feel itchy all over!

This happens because some foods have hidden helpers called proteins. These proteins can look like invaders to your body’s immune system. When the immune system says “alert!”, it sends out signals that cause the allergic reaction.

It's like when you see a friend wearing a really cool hat and you get excited, but if you think it's from an enemy, you might shout out in surprise!

So, sometimes food can be a little hero, or a big villain, depending on how your body sees it.