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.
The gluten-free diet. 1  If you have coeliac disease and/or dermatitis herpetiformis you have to avoid gluten for life. 2  The gluten-free diet is the only treatment for the condition. 3  On the gluten-free diet you can eat many foods including meat, fish, fruit, vegetables, rice and potatoes.