DefinitionA food allergy is an exaggerated immune response triggered by eggs, peanuts, milk, or some other specific food.Alternative NamesAllergy to foodCauses, incidence, and risk factorsNormally, your body's immune system defends against potentially harmful substances, such as bacteria, viruses, and toxins. In some people, an immune response is triggered by a substance that is generally harmless, such as a specific food.The cause of food Allergies is related to your body making a type of allergy-producing substance called immunoglobulin E (IgE) antibodies to a particular food.Although many people have a food intolerance, food allergies are less common. In a true food allergy, the immune system produces antibodies and histamine in response to the specific food.Any food can cause an allerg