For information about UMaine Extension programs and resources, visit extension.umaine.edu. Find more of our publications and books at extension.umaine.edu/publications/. Table of Contents Quick Facts… What is Celiac Disease? What is Gluten? 10 Steps to the Gluten-Free Diet List 1. Gluten-containing Foods and Ingredients List 2. Common Sources of Hidden Gluten List 3. Sample Gluten-free Shopping List