“Nuts,” “seeds,” and “kernels” cause more severe than average anaphylactic reactions, some of which are pollen-associated. The allergen trigger can be identified by history, prick-to-prick test and determination of IgE antibodies. It is extremely tricky in the case of genetically modified soybeans, into which the particularly methionine-rich 2S albumin from Brazil nuts has been transferred. For Brazil nut allergy sufferers, the allergen Ber e 1 contained therein poses a high risk.