What is the number 1 food allergy?

The most common food allergy is to peanuts. Peanuts are actually legumes and not nuts, and their proteins can trigger an allergic reaction in some individuals. Peanut allergies are often severe, and even trace amounts of peanuts or peanut protein can trigger an allergic reaction, ranging from mild symptoms like hives and itching to severe reactions such as anaphylaxis, a life-threatening allergic reaction that can cause difficulty breathing, drop in blood pressure, and other serious symptoms. It is important for individuals with peanut allergies to avoid peanuts and peanut-containing products and to take appropriate precautions to prevent accidental exposure.