One of the vital minerals in the human body is calcium. This mineral takes part in more than 300 biologically active reactions. Medicinal products (PM), including calcium salts, have been used in medicine for many decades. In total, the body of an adult contains about 1000-1500 mg of Ca. In the body, calcium is in two forms - it is ionized (free) and associated with Ca proteins (mainly albumin). A decrease in the concentration of ionized calcium causes signs of hypocalcemia. The main way calcium enters the body is the alimentary route. By consuming milk, dairy products, fish, meat, fruits, vegetables, greens, we take the daily intake of calcium. Sources of calcium for children at different stages are different. The intake of calcium to the fetus depends on the saturation of the mother's body with calcium, vitamin D. In the last trimester of pregnancy, the rate of calcium incorporation into the fetal body increases, which means that the state of bone mineralization will also depend on gestational age. After birth, the source of calcium is breast milk, and for formula-fed babies, an adapted milk formula. With breast milk, a child receives up to 300 mg of calcium, and in mixtures, an average of 400 mg of calcium.
