I would try the elimination/challenge diet to determine masked food allergy.eliminate (one) only, of the food groups from your diet 5 to 10 days that you would like test out. wheat or gluten,corn,soy,dairy,eggs.when you! introduce this food back into your diet after elimination for 5 to 10 days your system will over react!!! monitor your symptoms 15 min to six hours. but only do this under DR. orders!! some symptoms will be as such headache, nasal congestion, bloating muscle or joints aches or swelling. if any oucurr you are allergic to that food group. but seek a DR. on this please!