Herts Allergy

The Importance of Accurate Allergy Diagnosis Peanut allergy is among the most widely known food allergies. However, peanuts are not actually nuts. They are legumes, botanically closer to lentils and peas than to cashews or walnuts. This distinction matters clinically. Tree nuts, including almonds, cashews, walnuts, hazelnuts, pecans, and pistachios, come from trees and form a separate allergen group. Having a peanut allergy does not automatically mean you are allergic to tree