Dr. Nick LeRoy, DC, MSStudies are now correlating obesity with an increased risk of food allergies. Food allergies can compromise immunity and lead to many illnesses including GERD, IBS, migraine headaches, asthma and other conditions and symptoms. I have been performing food allergy testing, a simple blood test that checks for sensitivities to 154 different foods, for about fifteen years with excellent results. In about 90% of cases, patients experience a complete, or near complete amelioration of symtoms. Most insurance companies pay for this test.