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today's topic is food allergy food allergy is an abnormal immune system reaction to food even exposure to very small amounts of allergy causing food can trigger signs and symptoms associated with a condition food that causes allergic reactions are called allergens sometimes allergy symptoms are mild other times they are severe all allergic symptoms should be taken seriously both mild and severe symptoms can lead to a serious allergic reaction referred to as anaphylaxis this reaction usually involves more than one part of the body can impair breathing cause a dramatic drop in blood pressure and affect heart rate to provide the right chance for improvement and prevent serious potentially life-threatening complications anaphylaxis must be treated right away the centers for disease control and prevention estimates that food allergies affect four percent to six percent of children and four percent of adults there are two categories of food allergy ige mediated or non-ige mediated ige mediated is the most common type in this type the immunoglobulin e or ige antibody is released by your immune system to fight the threat in the non-ige mediated type ige antibodies are not released and other parts of the immune system are used to fight the perceived threat causes in food allergies the immune system mistakenly identifies a specific protein in food as a pathogen harmful or as something that may cause disease to respond to this the immune system produces antibodies to attack this protein when even the smallest amount of that food is eaten again the antibodies are ready and signal the immune system to release a chemical known as histamine as well as other chemicals into the bloodstream histamine and these other chemicals cause the symptoms of food allergy the most common food allergies which account for about 90 percent of all food allergies often referred to as the big eight are milk eggs peanuts or ground nuts tree nuts including walnuts almonds brazil nuts cashews seafood shellfish including shrimp mussels and crab soy wheat other foods containing allergenic proteins include fruits vegetables maize and spices risk factors include family history age other allergies being allergic to one food may increase your chance of becoming allergic to another asthma symptoms hives dizziness abdominal pain tingling or itching in the mouth swelling of the lips face tongue and throat or other parts of the body nasal congestion nausea diarrhea anaphylaxis rapid pulse tightening of the airway shock with a severe drop in blood pressure swollen throat loss of consciousness diagnosis and treatment before making a diagnosis the doctor will consider a number of factors including your symptoms a family history of allergies a physical examination to identify or exclude other medical problems a skin prick test to determine reaction to a particular food a blood test to measure your immune system's response to particular foods by measuring the allergy related antibody known as ige elimination diet you may be asked to eliminate suspected foods for four to six weeks to see...