Does your bread have quinoa, amaranth, spelt and Kamut ?

Ancient grains may sound like something you'd find in a museum or at an archaeological site.

But these days, they're turning up in the bread aisle. At markets from Whole Foods to Vons, shoppers can choose from a growing number of breads made with so-called ancient grains, including quinoa, amaranth, spelt and Kamut (a patented variety of wheat).

Claims about the breads abound: They're said to be packed with whole grains, protein, omega-3 fatty acids and antioxidants, and they're supposedly safe for people with wheat allergies or gluten intolerance, also known as celiac disease. But although the ancient grains are undoubtedly healthful and tasty, not all of the claims hold up.