Cow's Milk-Nutrient quality
Milk, as already mentioned has been referred to as the complete liquid food. It has primarily adequate amount of calories, only natural source of lactose, good quality proteins, fats, iodine, calcium, phosphorous, potassium, vitamin A, vitamin D, thiamine, riboflavin and niacin. Other nutrients are also present in smaller amounts.
Emphasizing the health benefits based on its nutrient qualities one can say that cow's milk promotes strong bones by being a very good source of vitamin D and calcium, and a good source of vitamin K-three nutrients essential to bone health. In addition, cow's milk is a very good source of iodine, a mineral essential for thyroid function; and a very good source of riboflavin and good source of vitamin B12, two B vitamins that are necessary for cardiovascular health and energy production.
Cow's milk is also a good source of vitamin A, a critical nutrient for immune function, and potassium, a nutrient important for cardiovascular health.
Milk produced by grass fed cows also contains a beneficial fatty acid called conjugated linoleic acid (CLA). Researchers who conducted animal studies with CLA found that this fatty acid inhibits several types of cancer in mice.