Vitamin D does not increase calcium absorption in young women: A randomized clinical trial

John Christopher G. Gallagher, Prachi S. Jindal, Lynette M. Smith

Research output: Contribution to journalArticle

28 Scopus citations


It is commonly said that vitamin D should be used to increase calcium absorption. We tested this statement in a dose-response study of vitamin D on calcium absorption. A total of 198 white and African American women, aged 25 to 45 years, with vitamin D insufficiency, serum 25-hydroxyvitamin D (25OHD) 2D) amongst the lowest groups. Vitamin D doses up to 2400 IU daily did not increase calcium absorption. No threshold level of serum 25OHD for calcium absorption was found at baseline or in the longitudinal study, suggesting that active transport of calcium is saturated at very low serum 25OHD levels

Original languageEnglish
Pages (from-to)1081-1087
Number of pages7
JournalJournal of Bone and Mineral Research
Issue number5
StatePublished - 2014


All Science Journal Classification (ASJC) codes

  • Orthopedics and Sports Medicine
  • Endocrinology, Diabetes and Metabolism
  • Medicine(all)

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