Undiagnosed food allergies are believed to cause many common health complaints and diseases. The only way to identify someone’s food sensitivities is by letting them undergo an allergy avoidance diet. The patient is asked to consume a long list of hypoallergenic foods such as lamb, pears, apples, rice, most vegetables, most beans and legumes (except peanuts) and the non-gluten grains. Once the body has gotten used to the absence of the suspected food allergen, that type of food is gradually introduced back into the patient’s diet. The symptoms resulting from the test will determine which foods should be avoided.