A recent study showed that over 3 million Americans are allergic to peanuts and tree nuts. A lot of kids have questions about food allergies.
Food allergies occur when the body thinks a food is harmful.
These chemicals trigger the allergic symptoms. So, you can say allergic reactions are caused by an overactive immune system. The most common symptom of a food-allergy reaction is hives. In rare cases, it can cause death in a matter of minutes. Your doctor will tell you what kind of medicine you need to take.