Why are some kids allergic to peanuts?

Some kids get sick because peanuts upset their body. Their lips may itch or swell. Their tummy may hurt. They need grown-ups to keep peanuts away.

Some kids’ bodies make a mistake about peanuts. Their body thinks a tiny bit of peanut is a bad germ, even though it is food. So it sends out help signals, and the kid may itch, cough, or feel sick. It is like a smoke alarm beeping when there is only toast. Those kids stay away from peanuts.

Some kids are allergic to peanuts because their immune system, the body’s germ-fighting team, makes a mistake. It sees peanut proteins, tiny parts of the food, as danger. Then it sends chemicals that can cause hives, coughing, swelling, or a sick tummy. Allergies can run in families, but they can happen to anyone. Fun fact: peanuts are not true tree nuts. They grow underground and are more like beans.