PEDIATRICS Vol. 41 No. 3 March 1968, pp. 691
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Possible Explanation for the Decline of Hypercalcemia

Lewis A. Barness M.D.1

1 Department of Pediatrics, Hospital of the University of Pennsylvania, Philadelphia 19104

In a conversation I mentioned that I could understand why hypercalcemia had decreased in England but I was unaware of any logical explanation for why it had decreased so much in incidence in this country. In England until a few years ago almost 2,000 units of vitamin D were added to milk, whereas in this country milk allegedly contained about 400 units per reconstituted quart. Since idiopathic hypercalcemia became a recognized entity, the vitamin D content of milks in England has been decreased.