Effects of vitamin D supplementation in older African American women

John Christopher G. Gallagher, Munro Peacock, Vinod Yalamanchili, Lynette M. Smith

Research output: Contribution to journalArticle

57 Citations (Scopus)

Abstract

Context: Serum 25-hydroxyvitamin D (25OHD) is lower in women with darker skin color. Is it due to lower skin production, lower absorption, or different metabolism of vitamin D? Objectives: The objective of the study was to measure the effect of vitamin D3 on serum 25OHD and serum PTH in older African American women with vitamin D insufficiency and the serum 25OHD 20 ng/mL or less (50 nmol/L) in 97.5% of the African American women just as it did in the Caucasian women, and therefore, the RDA is the same for both groups. Because absorption and metabolism of oral vitamin D absorption is similar in both groups, lower levels of serum 25OHD in African Americans must be due to lower production of vitamin D in skin.

Original languageEnglish
Pages (from-to)1137-1146
Number of pages10
JournalJournal of Clinical Endocrinology and Metabolism
Volume98
Issue number3
DOIs
StatePublished - Mar 2013

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Vitamin D
African Americans
Skin
Serum
Metabolism
Cholecalciferol
Skin Pigmentation
Color

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Clinical Biochemistry
  • Endocrinology
  • Biochemistry, medical
  • Endocrinology, Diabetes and Metabolism

Cite this

Effects of vitamin D supplementation in older African American women. / Gallagher, John Christopher G.; Peacock, Munro; Yalamanchili, Vinod; Smith, Lynette M.

In: Journal of Clinical Endocrinology and Metabolism, Vol. 98, No. 3, 03.2013, p. 1137-1146.

Research output: Contribution to journalArticle

Gallagher, John Christopher G. ; Peacock, Munro ; Yalamanchili, Vinod ; Smith, Lynette M. / Effects of vitamin D supplementation in older African American women. In: Journal of Clinical Endocrinology and Metabolism. 2013 ; Vol. 98, No. 3. pp. 1137-1146.
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