Akiko, Nanri and Leng, Huat Foo and Kazutosh, Nakamura and Ai, Hori and Kalpana, Poudel-Tandukar and Yumi, Matsushita and Tetsuya, Mizoue (2011) Serum 25-Hydroxyvitamin D Concentrations and Season-Specific Correlates in Japanese Adults. Journal of Epidemiology, 21 (5). pp. 346-353. ISSN 0917-5040
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Abstract
Background: Several lines of evidence indicate an important role for vitamin D in the prevention of a range of diseases. Blood vitamin D levels show clear seasonal variation; however, data on the determinants of vitamin D status for each season are limited. We investigated the association between lifestyle and serum vitamin D concentration by season in Japanese workers. Methods: Subjects were 312 men and 217 women aged 21 to 67 years who worked in municipal offices in Northern Kyushu, Japan and participated in a periodic checkup in July or November. Multiple linear regression analysis was used to examine the association between serum 25-hydroxivitamin D concentrations and lifestyle factors for each season. Results: Mean serum 25-hydroxyvitamin D concentration was 27.4 ng/ml (68.4 nmol/L) and 21.4 ng/ml (53.4 nmol/L) for workers surveyed in July and November, respectively (P < 0.001); the prevalence of vitamin D deficiency (<20 ng/ml) was 9.3% and 46.7%, respectively (P < 0.001). In November, dietary vitamin D intake (in both sexes) and nonsmoking and physical activity (in men) were significantly associated with higher concentrations of serum 25-hydroxyvitamin D. In summer, fish/shellfish intake was associated with higher serum 25- hydroxyvitamin D concentrations in women. Conclusions: Vitamin D deficiency is common in Japanese workers during seasons with limited sunlight. The lifestyle correlates of favorable vitamin D status in November were physical activity, dietary vitamin D intake, and nonsmoking.
| Item Type: | Article |
|---|---|
| Subjects: | R Medicine > R Medicine (General) > R5-130.5 General works |
| Divisions: | Kampus Kesihatan (Health Campus) > Pusat Pengajian Sains Kesihatan (School of Health Sciences) > Article Zoom Profil Pakar (Expert Profile) > Foo Leng Huat (Health Sciences) |
| Depositing User: | Mr Noorazilan Noordin |
| Date Deposited: | 16 Aug 2017 04:44 |
| Last Modified: | 07 Nov 2017 10:30 |
| URI: | http://eprints.usm.my/id/eprint/36128 |
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