Peanut and Tree Nut Allergies: How Are They Related?
Peanuts are members of the legume family, like lentils, soybeans, and chickpeas. They are not a type of nut, but a person may have allergies to legumes as well as nuts.
Peanut allergies can be life-threatening, although reactions range from mild to severe. Most people with a peanut allergy can tolerate tree nuts, including almonds, walnuts, Brazil nuts, cashews, hazelnuts, pecans, and pistachios. However, around 3 in 10 people with a peanut allergy are also allergic to tree nuts.
If you have an allergy to one tree nut, you may not be allergic to other tree nuts. However, some tree nuts, such as pistachios and cashews or pecans and walnuts, have a close link and can cross-react.
Discuss known allergies with an allergist, as they can test for other nuts that may cause you to have an allergic reaction.
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