Allergology

Food Allergies

Food allergy is not a wide problem, since it concerns averagely 1%-2% of the American population, and so it has not been studied in all its practical aspects, yet. With a trial sponsored by NIH, a review has been performed on the trials about food allergy published from 1988 to 2009, finding severe methodological gaps and a not univocal definition of “food allergy”. The authors then make the following observations: The widely spread perception that food allergies are increasing has not been confirmed by any good-quality trials. Skin prick-test and the determination of specific IgE are sensitive exams, but they are a little specific: about 50% of subjects with a history of food allergy and positive tests result not to be affected by any food allergy.
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