I wish I could tell you that I discovered it but it was a Dr who suggested it and ordered the tests. About 5 years before seeing that Dr. a person I knew at one of the Farmers Markets I sold at had said I was probably sensitive to gluten. She may have been an ND but one day she and her partner stood near my stand and did some long distance muscle testing. I had never heard of autoimmune gluten sensitivity tho I had heard of gluten allergy so thought that's what they meant. I didn't have allergy symptoms when I ate gluten so did not take their advice and start a gf diet. I also had undiagnosed Lyme Disease so don't think that just avoiding gluten would have made much difference but still I was ignorant and with no computer could not look for more information.