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July 31, 1926


JAMA. 1926;87(5):329. doi:10.1001/jama.1926.02680050039018

In recent years the importance of the inorganic nutrients for the welfare of the body has been realized. Although it is easier to awaken popular enthusiasm for the scientific aspects of calories, proteins and vitamins in nutrition than of the mineral factors, much interest has lately been evinced with regard to the need and rôle of calcium, particularly during the years of growth and, in the female, during periods of pregnancy and lactation.1 Judging by experiments on animals, the average man has about twenty times the body weight with which he was born and about 340 times as much calcium as did the body at birth. The mineral components of the body obviously cannot be synthesized like some of the organic constituents; they must be furnished in the food and drink and, furthermore, must be adequately absorbed. As the skeleton contains more than 95 per cent of the calcium