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Abstract Title:

The effect of high-dose vitamin D3 supplementation on bone mineral density in subjects with prediabetes.

Abstract Source:

Osteoporos Int. 2017 Sep 18. Epub 2017 Sep 18. PMID: 28921338

Abstract Author(s):

A U Larsen, G Grimnes, R Jorde

Article Affiliation:

A U Larsen

Abstract:

: The rationale of this study was to determine the effect of high-dose vitamin D3 supplementation on bone mineral density (BMD). Prediabetic males given vitamin D had significantly less reduction in BMD at the femoral neck compared to the controls. The clinical implications of our findings require further investigation.

INTRODUCTION: Type 2 diabetes mellitus is associated with increased fracture risk, and recent studies show crosstalk between bone and glucose metabolism. Few studies have investigated the effect of vitamin D supplementation on the bone without additional calcium. In the present study, we aimed to determine whether a high dose of vitamin D3 could improve bone mass density (BMD) in prediabetic subjects.

METHODS: The current study was conducted as a secondary research on a previously performed trial, in which 511 subjects with prediabetes were randomized to vitamin D3 (20,000 IU per week) versus placebo for 5 years. BMD was measured using dual-energy X-ray absorptiometry (DEXA).

RESULTS: Two hundred and fifty-six subjects were randomized to vitamin D and 255 to placebo. Mean baseline serum 25-hydroxyvitamin D (25(OH)D) level was 60 nmol/L. Two hundred and two and 214 in the vitamin D and placebo groups, respectively, completed BMD measurements, whereas one in each group was excluded due to use of bisphosphonates. Males given vitamin D had significantly less reduction in BMD at the femoral neck measurement site compared to the controls (0.000 versus - 0.010 g/cm(2), p = 0.008). No significant differences between intervention groups were seen at the total hip measurement site, regarding both males and females.

CONCLUSIONS: Vitamin D3 supplementation alone may be beneficial in males with prediabetes, but confirmatory studies are needed.

Study Type : Human Study
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