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.
Gluten-free diet is originally intended for people who suffer from Celiac disease, an autoimmune disorder marked by the small intestine's hypersensitivity to gluten, a protein present in grains such as rye, barley and wheat.