Journal article
Three doses of vitamin D, bone mineral density, and geometry in older women during modest weight control in a 1-year randomized controlled trial
Osteoporosis international, v 28(1), pp 377-388
01 Jan 2017
PMID: 27535752
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
The effects of higher than recommended vitamin D doses on bone mineral density (BMD) and quality are not known. In this study, higher intakes, in postmenopausal women undergoing weight control over 1 year, had no effect on areal or volumetric BMD but prevented the deterioration in cortical bone geometry.
Studies examining how bone responds to a standard dose of vitamin D supplementation have been inconsistent. In addition, the effects of higher doses on BMD and quality are not known. Postmenopausal women undergoing weight control to improve health outcomes are particularly at risk for bone loss and might benefit from supplemental vitamin D intake above the recommended allowance.
This 1-year-long, randomized, double-blind controlled study addresses whether vitamin D supplementation, in healthy overweight/obese older women, affects BMD and bone structural parameters. In addition, bone turnover and serum total, free, and bioavailable 25-hydroxyvitamin D (25OHD) responses to one of three daily levels of vitamin D-3 (600, 2000, 4000 IU) with 1.2 Ca g/day during weight control were examined.
Fifty-eight women (age, 58 +/- 6 years; body mass index, 30.2 +/- 3.8 kg/m(2), serum 25OHD, 27.3 +/- 4.4 ng/mL) were randomized to treatment. After 1 year, serum 25OHD concentrations increased to 26.5 +/- 4.4, 35.9 +/- 4.5, and 41.5 +/- 6.9 ng/mL, in groups 600, 2000, and 4000 IU, respectively, and differed between groups (p < 0.01). Weight change was similar between groups (-3.0 +/- 4.1 %). Cortical (Ct) thickness of the tibia changed by -1.5 +/- 5.1 %, +0.6 +/- 3.2 %, and +2.0 +/- 4.5 % in groups 600, 2000, and 4000 IU, respectively, and each group was significantly different from each other (p < 0.05).
The decline in Ct thickness was prevented with higher vitamin D-3 supplementation, but there were no other significant changes due to treatment over 1 year. Whether these findings translate to changes in biomechanical properties leading to reduced fracture risk should be addressed in future studies.
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Details
- Title
- Three doses of vitamin D, bone mineral density, and geometry in older women during modest weight control in a 1-year randomized controlled trial
- Creators
- L. C. Pop - Rutgers, The State University of New JerseyD. Sukumar - Drexel UniversityS. H. Schneider - Rutgers, The State University of New JerseyY. Schlussel - Rutgers, The State University of New JerseyT. Stahl - Rutgers, The State University of New JerseyC. Gordon - McMaster UniversityX. Wang - Rutgers, The State University of New JerseyT. V. Papathomas - Rutgers, The State University of New JerseyS. A. Shapses - Rutgers, The State University of New Jersey
- Publication Details
- Osteoporosis international, v 28(1), pp 377-388
- Publisher
- Springer Nature
- Number of pages
- 12
- Grant note
- 0153866 / NJAES BBGP2010695157 / Busch Biomedical Award
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Nutrition Sciences
- Web of Science ID
- WOS:000391390100039
- Scopus ID
- 2-s2.0-84982273303
- Other Identifier
- 991019168679504721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Endocrinology & Metabolism