Ragi is also a very rich source of minerals. It has been found to have between 5-30 times the calcium content found in other cereals. It is also rich in phosphorus, potassium and iron. Calcium is of course an important component in maintaining bone density and health. Thus, finger millet would be a healthier alternative to over-the-counter supplements, especially for people who might be at risk of osteoporosis or low hemoglobin levels.