That's why today we're diving into the world of gluten-free grains to shake up your morning oatmeal routine. Gluten is a ...

The gluten-free grains amaranth, buckwheat, millet, and polenta or grits had negligible levels of inorganic arsenic. Bulgur, barley, and farro, which contain gluten, also have very little arsenic.

Barley is a type of cereal grain that contains gluten. Those who avoid gluten will need to avoid barley, including barley flour, pearl barley, and malted barley. Barley grass may be gluten-free.