A food allergy is caused when the immune system overreacts to food proteins. You can have an allergy to any food. Food allergy has imposed a global socioeconomic burden. Almost 6% of the U.S. population has a food allergy. The latter affects people of all ages, ethnicities, sexes, and socioeconomic strata. Food allergy symptoms may be diverse: from mild eye and nose itching to life-thretening anaphylaxis.
