Fewer Peanut Allergies Than Believed

New Swedish research reveals that many people have been wrongly diagnosed as being allergic to peanuts.

The study, led by Professor Magnus Wickman of Stockholm’s Karolinska Institute, concludes that two out of three of those said to have the allergy can eat peanuts without a problem. The explanation is that at least one of the substances in peanuts is similar to the allergen in birch pollen, so that people with birch allergies often have false reactions in tests for peanut allgergies.