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Claire Billes - Allergy has become so common and so many people suffer from allergic reactions that the majority of us don’t even consider allergies as a disease. Numerous types of allergies are known today and there are countless allergens that can cause a reaction. Most probably you or some of your friends or relatives have allergies to pollen, animals, dust, synthetic fabrics, food, drugs, etc. Food allergy is known to be one of the most widely spread ones. A person who suffers from food allergies is hypersensitive to a specific product or ingredient.