Quinoa who? The newest trend in healthful grains is amaranth, a gluten-free protein option that was first cultivated by the Aztecs. Not only is amaranth grain packed with protein, but it's also full of calcium and antioxidants and makes an amazingly effective appetite suppressant. The most important health benefits of amaranth grain include its ability to protect the heart, boost the immune system, strengthen bones, and optimize digestion. Start reaping the benefits of an amaranth-rich diet with these recipes!