American Academy of Pediatrics. Committee on Nutrition. Calcium requirements in infancy and childhood.

Various aspects of calcium metabolism and methods for estimating total body calcium content in man were reviewed. From the data available, it is possible to make an estimate of the retention of calcium that is needed to sustain normal growth in body composition. However, the dietary requirements for different periods of growth cannot be defined precisely. Dietary calcium needs are most critical during those periods of life when requirements are known to be high. The low-birth-weight infant, the lactating woman, and the adolescent boy all have requirements. Individuals whose milk intake must be restricted should receive advice on nonmilk foods that are high in calcium.