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Serum 25-Hydroxyvitamin D Levels and Depression in Older Adults: A Dose–Response Meta-Analysis of Prospective Cohort Studies

•This study investigated the association between serum 25-hydroxyvitamin D [25(OH)D] concentration and the risk of depression in older adults.•Serum 25(OH)D concentration is negatively associated with the risk of depression in older adults. Every 10-ng/mL increase in serum 25(OH)D was associated wit...

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Published in:The American journal of geriatric psychiatry 2019-11, Vol.27 (11), p.1192-1202
Main Authors: Li, Haibin, Sun, Dianqin, Wang, Anxin, Pan, Huiying, Feng, Wei, Ng, Chee H., Ungvari, Gabor S., Tao, Lixin, Li, Xia, Wang, Wei, Xiang, Yu-Tao, Guo, Xiuhua
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Language:English
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Summary:•This study investigated the association between serum 25-hydroxyvitamin D [25(OH)D] concentration and the risk of depression in older adults.•Serum 25(OH)D concentration is negatively associated with the risk of depression in older adults. Every 10-ng/mL increase in serum 25(OH)D was associated with a 12% decrease in the risk of depression.•This finding suggests that increasing 25(OH)D levels may be a useful approach to reduce the risk of depression in older adults and highlights the need for further studies. The association between serum vitamin D and risk of depression in older adults is controversial. We performed a dose–response meta-analysis of prospective cohort studies to examine the association between serum 25-hydroxyvitamin D [25(OH)D] concentrations and the risk of depression in older population. Studies published before February 2018 in the PubMed, Cochrane Library, Web of Science, PsycINFO, and EMBASE databases were systematically searched. Prospective cohort studies that examined the association between serum 25(OH)D levels and the risk of depression in older adults were included. A random-effects model was used to calculate the pooled hazard ratio and the corresponding 95% confidence intervals. A nonlinear dose–response association was examined using restricted cubic spline functions. Six prospective studies covering 16,287 older adults with 1,157 cases of depression were included and analyzed. The pooled hazard ratio of depression for per 10-ng/mL increment in serum 25(OH)D was 0.88 (95% confidence intervals: 0.78–0.99, I2 = 79.0%, p
ISSN:1064-7481
1545-7214
DOI:10.1016/j.jagp.2019.05.022