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An allergy test or food challenge may be performed at an allergy clinic to determine the exact allergens. Since a tree nut allergy can be life-threatening, people who suspect they are having allergic reactions to any kind of tree nut should be tested by an allergist immediately. [14] Tree nut allergies can be genetic and passed down. [15]
Shellfish allergies are highly cross reactive, but its prevalence is much higher than that of fish allergy. Shellfish allergy is the leading cause of food allergy in U.S adults. [31] As of 2018 six allergens have been identified to prawn alone; along with crab, it is the major culprit of seafood anaphylaxis. [13]
Labeling regulations have been modified to provide for mandatory labeling of ingredients plus voluntary labeling, termed precautionary allergen labeling, also known as "may contain" statements, for possible, inadvertent, trace amount, cross-contamination during production.
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Labeling regulations in the European Union require mandatory labeling of certain ingredients, and allow voluntary labeling, termed Precautionary Allergen Labeling (PAL) for "may contain" statements to account for product ingredients included as inadvertent, trace amount or cross-contamination during production.
An allergen is an otherwise harmless substance that triggers an allergic reaction in sensitive individuals by stimulating an immune response.. In technical terms, an allergen is an antigen that is capable of stimulating a type-I hypersensitivity reaction in atopic individuals through immunoglobulin E (IgE) responses. [1]
Whole Foods may end up cross-contaminating other stores with the labeling system, drawing even more attention to the company's large selection of health-conscious -- and high-margin -- products.
Even minute amounts, such as coloring or spices, must be listed if they contain any proteins from these major allergens. [8] Manufacturers are given two ways in which to label food allergens. They may either state the food source name of a major food allergen in the list of ingredients, most often contained within parenthesis.