Serum 25-Hydroxyvitamin D Concentrations and Season-Specific Correlates in Japanese Adults
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...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Japan Epidemiological Association
2011
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| Online Access: | http://eprints.usm.my/36128/1/Foo_LH_JE-21-346.pdf |
| _version_ | 1825833410380169216 |
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| author | Akiko, Nanri Leng, Huat Foo Kazutosh, Nakamura Ai, Hori Kalpana, Poudel-Tandukar Yumi, Matsushita Tetsuya, Mizoue |
| author_facet | Akiko, Nanri Leng, Huat Foo Kazutosh, Nakamura Ai, Hori Kalpana, Poudel-Tandukar Yumi, Matsushita Tetsuya, Mizoue |
| author_sort | Akiko, Nanri |
| collection | USM |
| description | 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. |
| first_indexed | 2024-03-06T15:07:24Z |
| format | Article |
| id | usm.eprints-36128 |
| institution | Universiti Sains Malaysia |
| language | English |
| last_indexed | 2024-03-06T15:07:24Z |
| publishDate | 2011 |
| publisher | Japan Epidemiological Association |
| record_format | dspace |
| spelling | usm.eprints-361282017-11-07T10:30:18Z http://eprints.usm.my/36128/ Serum 25-Hydroxyvitamin D Concentrations and Season-Specific Correlates in Japanese Adults Akiko, Nanri Leng, Huat Foo Kazutosh, Nakamura Ai, Hori Kalpana, Poudel-Tandukar Yumi, Matsushita Tetsuya, Mizoue R5-130.5 General works 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. Japan Epidemiological Association 2011 Article PeerReviewed application/pdf en http://eprints.usm.my/36128/1/Foo_LH_JE-21-346.pdf 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 |
| spellingShingle | R5-130.5 General works Akiko, Nanri Leng, Huat Foo Kazutosh, Nakamura Ai, Hori Kalpana, Poudel-Tandukar Yumi, Matsushita Tetsuya, Mizoue Serum 25-Hydroxyvitamin D Concentrations and Season-Specific Correlates in Japanese Adults |
| title | Serum 25-Hydroxyvitamin D Concentrations
and Season-Specific Correlates in Japanese Adults |
| title_full | Serum 25-Hydroxyvitamin D Concentrations
and Season-Specific Correlates in Japanese Adults |
| title_fullStr | Serum 25-Hydroxyvitamin D Concentrations
and Season-Specific Correlates in Japanese Adults |
| title_full_unstemmed | Serum 25-Hydroxyvitamin D Concentrations
and Season-Specific Correlates in Japanese Adults |
| title_short | Serum 25-Hydroxyvitamin D Concentrations
and Season-Specific Correlates in Japanese Adults |
| title_sort | serum 25 hydroxyvitamin d concentrations and season specific correlates in japanese adults |
| topic | R5-130.5 General works |
| url | http://eprints.usm.my/36128/1/Foo_LH_JE-21-346.pdf |
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