If someone is allergic to peanut, can they eat tree nuts?

Clients need to discuss this question with their allergist. A client may be advised to restrict all nuts for two reasons: 1) Cross contamination (cross contact):  Tree nuts are often processed on the same equipment as peanuts. 2) Cross reactions:  A peanut allergic client is allergic to a specific protein in peanut. Any tree nuts with the same protein will cause a reaction.   A peanut allergic client can eat tree nuts if their allergist has approved it (many allergist perform food challenges with specific nuts) AND there has been no contact with peanut (eating nuts right out of their shell prevents cross contamination).

Posted in: Fall2013-Q&A