Minerals and nutrition
Dietary minerals are a group of inorganic chemicals required by humans for various body functions.
They are extracted from the earth’s crust by plants which are in turn consumed by animals and humans. The following minerals are essential for humans.
Calcium: This is the most abundant of all minerals in the body. Average adult body contains about 1200 grams of calcium (roughly 2% of body weight).
About 99 percent of calcium in the body is in the bones. Milk and other diary products are the major source of calcium. About 20-30 percent of dietary calcium is absorbed.
The calcium in breast milk is easily absorbed and about 60% is absorbed. Though cow’s milk has higher calcium content its absorption is less due to higher phosphate content.