Scientists in Shizuoka, Japan screened 324 varieties of wheat from around the world, in an effort to find varieties less likely to trigger allergies to gluten, gliadin, and alpha-amylase inhibitor. Einkorn, along with rare varieties from Mexico, Ecuador, China, and Italy, were found to be among the least allergenic.
Journal of Nutritional Science and Vitaminology (Tokyo), June 2005; 51(3): 204-6