No gluten. All foods that do not contain cereal grains are safe. Therefore, corn, rice and potato are safe as most other foods. You can find gluten free foods at special sections of most grocery chains and health food stores. In general, breads, pasta, pizza and baked goods are out. Always look for "gluten free" on pakaged foods.
If no gluten protein. Gluten-free means the food or drink does not contain gluten, a protein found in such grains as wheat, rye, and barley (including malted barley). Grains that do not contain gluten include corn, rice, millet, quinoa, sorghum, & buckwheat. Oats & oatmeal don't have the gluten protein, but have another protein that some celiac disease patients react to, while other celiac patients may not react with.
Try these... From the mayo clinic http://www.Mayoclinic.Com/health/gluten-free-diet/my01140 or from web md http://www.Webmd.Com/diet/ss/slideshow-gluten-free-diet. Read more...