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.
But you do have to watch out: people who eat gluten-free tend to be deficient in a few vitamins and minerals, and their daily intakes of others may not quite meet recommendations, in part because gluten-free processed foods often aren't supplemented with extra nutrients.