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A person eats an allergen, or substance that causes an allergic reaction for the first time.
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When an individual eats the allergen, the body creates an antibody, defined as a protein that detects harmful substances.
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This antibody attaches itself to the cells found in tissues all over the body in order to prepare the body in case that specific allergen enters the body once again.
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The allergen binds to the antibodies and sends out signals to the body to release large amounts of histamine when the food allergen enters the body again
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The histamine causes irritation and swelling in parts of the body.
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The result of this irritation varies from person to person. Such reactions include the formation of mild hives, shortness of breath, or anaphylaxis.
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