It seems strange indeed that common and useful foods at times can do harm and even threaten life rather than sustain it. This is true of both advertised food products and of common, unadvertised foods. Food allergy may produce a variety of symptoms, including reactions involving the skin, the gastrointestinal tract, and the respiratory system; rarely, even severe constitutional shock-like reactions occur.
Richard R. Evans, Food and Drug Allergy Causation and Characteristics, 8 Clev.-Marshall L. Rev. 100 (1959)