<Tr> <Td_colspan="2"> (edit on Wikidata) </Td> </Tr> <P> A food allergy is an abnormal immune response to food . The signs and symptoms may range from mild to severe . They may include itchiness, swelling of the tongue, vomiting, diarrhea, hives, trouble breathing, or low blood pressure . This typically occurs within minutes to several hours of exposure . When the symptoms are severe, it is known as anaphylaxis . Food intolerance and food poisoning are separate conditions . </P> <P> Common foods involved include cow's milk, peanuts, eggs, shellfish, fish, tree nuts, soy, wheat, rice, and fruit . The common allergies vary depending on the country . Risk factors include a family history of allergies, vitamin D deficiency, obesity, and high levels of cleanliness . Allergies occur when immunoglobulin E (IgE), part of the body's immune system, binds to food molecules . A protein in the food is usually the problem . This triggers the release of inflammatory chemicals such as histamine . Diagnosis is usually based on a medical history, elimination diet, skin prick test, blood tests for food - specific IgE antibodies, or oral food challenge . </P> <P> Early exposure to potential allergens may be protective . Management primarily involves avoiding the food in question and having a plan if exposure occurs . This plan may include giving adrenaline (epinephrine) and wearing medical alert jewelry . The benefits of allergen immunotherapy for food allergies is unclear, thus is not recommended as of 2015 . Some types of food allergies among children resolve with age, including that to milk, eggs, and soy; while others such as to nuts and shellfish typically do not . </P>

Food allergies are autoimmune responses to which specific type of nutrient