We perfor medadietary primary pilot intervention study to determine whether delaying the introduction of gluten to the diet maybe beneficialin reducing the risk of type1 diabetes–associated islet autoimmunity in children with a predetermined genetic risk of islet autoimmunity, which was ~15% of children (11). We specifically assessed the feasibility of such an intervention, the safety with respect to growth, the development of glutendriven celiac disease, and, as a pilot efficacy measure, the cumulative frequency of islet autoimmunity by age 3 years.