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  • Title: Hemoglobin levels in a Himalayan high altitude population.
    Author: Beall CM, Reichsman AB.
    Journal: Am J Phys Anthropol; 1984 Mar; 63(3):301-6. PubMed ID: 6731601.
    Abstract:
    This report presents data on hemoglobin concentrations in a sample of Himalayan high altitude natives measured at their habitual altitude of residence. In this sample of 270 healthy Tibetan adults resident at 3250-3560 m in Upper Chumik , Nepal, the mean hemoglobin concentration is 16.1 +/- 1.2 gm/dl among adult males, 14.4 +/- 1.4 gm/dl among premenopausal and 15.0 +/- 1.1 gm/dl among postmenopausal adult females. 123 of 126 (98%) males, 96 of 100 (96%) premenopausal and 36 of 44 (82%) postmenopausal females have hemoglobin concentrations within two standard deviations of the sea level mean. These data demonstrate that a healthy population may reside at high altitude without the degree of elevation in hemoglobin widely known and cited for Andean highlanders. Comparing published data on mean hemoglobin concentrations of adult Himalayan and Andean samples residing between 3200 m and 4100 m reveals that Himalayan means are systematically lower. This in turn may account for the reported population differences in the prevalence of chronic mountain sickness ( Monge 's disease). It is hypothesized that Himalayan and Andean highlanders represent alternative patterns of high altitude hematological adaptation.
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