Many people mistake peanuts to be nuts because of the way they taste and how they look. But peanuts actually belong to the legume family. They come under the bean family, its closest relatives being soya, other beans and legumes. Nuts like Almonds, Cashews, Macadamia are all Tree Nuts which is a seed of a fruit, unlike peanuts which grow underground.
Allergy to peanut and tree nuts is the most common food allergy in adults and children. Most people with an allergy to peanut tend to be allergic to other nuts, and people who are allergic to tree nuts may not really be allergic to peanuts. This is because, the proteins present in these two are very different. Cross-reactivity occurs when a person is reactive to a certain protein present in the nut. This type of cross-reactivity is often found between cashews and pistachios.
Peanut butter contains more fat protein (which causes the allergic reaction). Unless you’re specifically allergic to peanuts, you can still go ahead and indulge in peanut butter, even if you are allergic to other nuts. Smooth peanut butter is recommended over chunky. But, if you’re still concerned, then it’s best to consult your doctor and take a skin prick or blood test to determine whether you’re allergic to peanut butter or not.