Here's why:
* Peanut allergy is an immune system response. When someone with a peanut allergy eats peanuts, their immune system mistakenly identifies peanut proteins as a threat.
* The immune system then releases chemicals like histamine, which trigger the allergy symptoms. These symptoms can range from mild (hives, itching) to severe (anaphylaxis, a life-threatening reaction).
It's important to note that not everyone who is sensitive to peanuts has a full-blown allergy. Some people might experience mild symptoms like digestive upset, while others might have a severe allergic reaction.