Food allergies

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Food allergies happen when a person's immune system mistakenly believes that something that person ate is harmful to the body. In an attempt to protect the body, the immune system produces IgE antibodies to that food. Antibodies are special proteins the body makes that work to recognize a specific substance if the body starts seeing that substance as harmful or foreign. IgE antibodies then cause mast cells (which are allergy cells in the body) to release chemicals into the bloodstream, one of which is histamine (pronounced: his-tuh-meen). The histamine then acts on a person's eyes, nose, throat, lungs, skin, or gastrointestinal tract and causes the symptoms of the allergic reaction. Once antibodies are made against a certain food, they will instantly recognize if that food is eaten and enters the digestive tract. So the next time that same food is eaten, IgE antibodies

against that food are activated, stimulating mast cells and causing histamine to be released into the bloodstream again. This creates the symptoms of the allergic reaction. In severe food allergies, reactions can occur even if that food is simply touched or if particles of it are breathed in through the nose. Some of the first signs that a person may be having an allergic reaction to a food include: a runny nose an itchy skin rash tingling in the tongue, lips, or throat Other symptoms of food allergies include: swelling in the throat or other parts of the body abdominal pain eczema dizziness diarrhea or vomiting (throwing up) wheezing Some people notice these symptoms immediately whereas others don't notice them for up to several hours after

eating a particular food. Everyone's different.

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