Plasma calcidiol, season, and serum parathyroid hormone concentrations in healthy elderly men and women -- Dawson-Hughes et al. 65 (1): 67 -- American Journal of Clinical Nutrition (full text PDF) - 0 views
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Matti Narkia on 11 Oct 09Plasma calcidiol, season, and serum parathyroid hormone concentrations in healthy elderly men and women. Dawson-Hughes B, Harris SS, Dallal GE. Am J Clin Nutr. 1997 Jan;65(1):67-71. PMID: 8988915 Plasma calcidiol and serum PTH concentrations were inversely related, with PTH rising slowly as calcidiol concentrations declined below 110 nmol/L (95 CI: 60, 168 nmol/L). More than 90% of the men and women had calcidiol concentrations below this value in the wintertime. The high prevalence of lower wintertime calcidiol values may increase risk of bone loss in elderly men and women.