Quinoa is a grain that has grown in popularity over the years as a "superfood." It is high in protein and nutritional vitamins such as manganese, copper, phosphorus, magnesium, zinc and iron. It is delicious in any diet, but quinoa is especially hailed as a great diet food because it is low in fat and gluten-free. What makes red quinoa different from other types of quinoa is its concentration of antioxidants. Enjoy cooked red quinoa in couscous type dishes and healthy salads.