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American Journal of Clinical Nutrition, Vol 27, 916-925, Copyright © 1974 by The American Society for Clinical Nutrition, Inc.
1 From the Bone Mineral Laboratory, Department of Radiology (Medical Physics), University of Wisconsin Hospital, Madison, Wisconsin 53706
Direct photon absorptiometry was used to measure the bone mineral content of forearm bones in Eskimo natives of the north coast of Alaska. The sample consisted of 217 children, 89 adults, and 107 elderly (over 50 years). Eskimo children had a lower bone mineral content than United States whites by 5 to 10% but this was consistent with their smaller body and bone size. Young Eskimo adults (20 to 39 years) of both sexes were similar to whites, but after age 40 the Eskimos of both sexes had a deficit of from 10 to 15% relative to white standards. Aging bone loss, which occurs in many populations, has an earlier onset and greater intensity in the Eskimos. Nutritional factors of high protein, high nitrogen, high phosphorus, and low calcium intakes may be implicated.
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