4.7 Article

Assessment of Vitamin D Status in Slovenian Premenopausal and Postmenopausal Women, Using Total, Free, and Bioavailable 25-Hydroxyvitamin D (25(OH)D)

期刊

NUTRIENTS
卷 14, 期 24, 页码 -

出版社

MDPI
DOI: 10.3390/nu14245349

关键词

vitamin D; 25(OH)D; postmenopausal; premenopausal; bioavailable 25(OH)D; free 25(OH)D; online calculator; cholecalciferol; calcidiol; menopause; DBP

资金

  1. Department of Public Health, Faculty of Medicine, University of Ljubljana research program ARRS
  2. Slovenian research programme for comprehensive cancer control SLORApro [P3-0360]
  3. University Medical Centre Ljubljana, The Division of Gynaecology and Obstetrics, research program ARRS
  4. [P3-0360 P3-0124]

向作者/读者索取更多资源

The objective of this study was to evaluate vitamin D status and its predictors in Slovenian premenopausal and postmenopausal women. The study found that vitamin D insufficiency and deficiency were common among both premenopausal and postmenopausal women, with vitamin D supplementation and sun exposure being important predictors of vitamin D status. Interestingly, the vitamin D status in Slovenian postmenopausal women was better than in premenopausal women, which differs from similar studies.
The objective of our study was to evaluate vitamin D status and its predictors in Slovenian premenopausal and postmenopausal women. A cross-sectional study was carried out between 1 March 2021 and 31 May 2021. A total of 319 healthy women from the Central Slovenian region aged between 44 and 65 were recruited; 176 were included in the final analysis. The vitamin D status was determined by measuring the total 25-Hydroxycholecalciferol (25(OH)D) concentration, vitamin D binding protein (DBP), and albumin and calculating the bioavailable 25(OH)D and free 25(OH)D. For the calculation of bioavailable and free 25(OH)D, we developed a new online calculator. The Endocrine Society's thresholds for vitamin D deficiency and insufficiency were used; 29.0% of premenopausal and 24.4% of postmenopausal subjects were found to be vitamin D deficient (total 25(OH)D < 50 nmol/L); 76.8% of the premenopausal and 61.7% of postmenopausal subjects were found to have insufficient levels (total 25(OH)D < 75 nmol/L). Premenopausal women had 11.8% lower total 25(OH)D, 32.2% lower bioavailable 25(OH)D, and 25.2% higher DBP than postmenopausal women. The most important predictors of vitamin D status were vitamin D supplementation and time spent in the sun. Contrary to similar studies, the vitamin D status in Slovenian postmenopausal women was significantly better than in premenopausal women. In postmenopausal women, the measurement of free or bioavailable 25(OH)D instead of the total 25(OH)D could be advantageous.

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