Why do older people have fewer seasonal allergies?

Older people often have fewer seasonal allergies because their bodies are used to certain allergens over time.

Imagine you're playing with a toy that sometimes makes your eyes water and nose tickle, that's like having an allergy. When you first start playing with it, it feels super annoying. But after a while, you get used to it, and it doesn’t bother you as much anymore.

Your body has immune cells that react when they see something new, like pollen from trees or grass. These immune cells send out signals to make your nose run or eyes itch. But if you've been around those same pollens for many years, your immune system starts to think, "Oh, I know this one!" and doesn’t get as excited.

It’s like learning a song, at first, it sounds complicated, but after singing it many times, it becomes easy and familiar. Your body is just doing the same thing with allergies!

So, over time, older people's immune systems become calmer around common allergens, making them feel fewer symptoms from seasonal allergies.