What causes allergies and why are they so common worldwide?

Allergies happen when your body thinks something harmless is actually harmful, and gets all excited about it.

Imagine you're eating a cookie, and suddenly your nose starts to run and your eyes get watery. That’s an allergy! It's like your body is playing a game of "Guess Who?" with the stuff you eat or touch, and it gets confused.

Your body has tiny soldiers called white blood cells that protect you from germs. Sometimes, these soldiers mistake something like pollen (which is like tiny dust from plants) or chocolate for a real enemy, and they attack it, making you sneeze, cough, or even break out in hives.

These days, we live in cleaner environments with fewer germs. That means your body doesn’t get as much practice fighting real enemies, so it gets extra excited about the little things like pet dander or peanuts. It's like training for a big race but only running short sprints, you get tired more easily!

Also, people are eating and touching lots of new things now, which can confuse your body even more. That’s why allergies are everywhere, in every city, every home, and every kid’s lunchbox! Allergies happen when your body thinks something harmless is actually harmful, and gets all excited about it.

Imagine you're eating a cookie, and suddenly your nose starts to run and your eyes get watery. That’s an allergy! It's like your body is playing a game of "Guess Who?" with the stuff you eat or touch, and it gets confused.