Nitrogen is a chemical element with symbol N and atomic number 7. It was first discovered and isolated by Scottish physician Daniel Rutherford in 1772.
âA gluten-free diet is a diet that does not include gluten, a protein found in wheat, rye, and barley,â says Tricia Thompson, RD, a dietitian based in Manchester, Mass., who focuses on developing gluten-free eating programs for people with celiac disease.
What foods contain gluten? A gluten free diet is a diet completely free of ingredients derived from gluten-containing foods: wheat (including Kamut and spelt), barley, rye, oats and triticale, as well as the use of gluten as a food additive in the form of a flavoring, stablizing or thickening agent.