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How does my immune system react to a food allergy?

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The first time you eat the offending food, the immune system responds by creating specific disease-fighting antibodies (called immunoglobulin E or IgE). When you eat the food again, the IgE antibodies spring into action, releasing large amounts of histamine in an effort to expel the "foreign invader" from the body. Histamine is a powerful chemical that can affect the respiratory system, gastrointestinal tract, skin, or cardiovascular system.

From: Food Allergies and Your Skin WebMD Medical Reference

SOURCE:

American Academy of Allergy, Asthma and Immunology.

Reviewed by William Blahd on September 04, 2016

SOURCE:

American Academy of Allergy, Asthma and Immunology.

Reviewed by William Blahd on September 04, 2016

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What are the symptoms of a food allergy?

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