11 Amazing Benefits Of Amaranth Grain Some of the most important health benefits of amaranth grain include its ability to spur growth and development, protect your heart , boost the immune system, strengthen your bones, increase circulation, optimize digestion , lowers appetite, and keeps hair looking young. Amaranth Grain Despite being one of the most ancient forms of cultivated food , amaranth grain remains extremely important for human health, just as it did for the Aztecs and other indigenous cultures up to 8,000 years ago. You will most commonly find amaranth grain sold in health food shops, as it is still not a widely cultivated type of grain, but the demand for this nutrient-packed grain is growing. The most commonly cultivated species are Amaranthus caudatus and Amaranthus cruentus, and are used in North America , Mexico, Central America, and certain parts of India . The large...