1. Applied nutritional investigation. Dietary intake of minerals in relation to depressive symptoms in Japanese employees: The Furukawa Nutrition and Health Study.
- Author
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Takako Miki, Takeshi Kochi, Masafumi Eguchi, Keisuke Kuwahara, Hiroko Tsuruoka, Kayo Kurotani, Rie Ito, Shamima Akter, Ikuko Kashino, Ngoc Minh Pham, Isamu Kabe, Norito Kawakami, Tetsuya Mizoue, and Akiko Nanri
- Subjects
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SMOKING , *BLUE collar workers , *DIETARY calcium , *CHI-squared test , *CONFIDENCE intervals , *MENTAL depression , *DIET , *EPIDEMIOLOGICAL research , *INDUSTRIAL hygiene , *IRON , *MAGNESIUM , *MARITAL status , *MULTIVARIATE analysis , *NUTRITIONAL assessment , *PROBABILITY theory , *PSYCHOLOGICAL tests , *QUESTIONNAIRES , *RESEARCH funding , *SHIFT systems , *STATISTICAL hypothesis testing , *T-test (Statistics) , *ZINC , *EMPLOYEES' workload , *MULTIPLE regression analysis , *STATISTICAL significance , *CROSS-sectional method , *PHYSICAL activity , *DATA analysis software , *DESCRIPTIVE statistics , *ODDS ratio ,RESEARCH evaluation - Abstract
Objective: Although intake of minerals has been suggested to be beneficial against depression, epidemiologic data from free-living settings are limited. The aim of this study was to determine the cross-sectional associations between the intake of magnesium, calcium, iron, and zinc and the prevalence of depressive symptoms in Japanese employees. Methods: Participants were 1792 men and 214 women ages 19 to 69 y. Dietary intake was assessed using a validated, brief self-administered diet history questionnaire. Participants with depressive symptoms were defined as those with a scale score of >16 on the Center for Epidemiologic Studies Depression Scale. Results: The prevalence of depressive symptoms was 27.8%. Intakes of magnesium, calcium, iron, and zinc were inversely associated with the prevalence of depressive symptoms. The multivariate adjusted odds ratios (95% confidence interval) of having depressive symptoms were 0.63 (0.44-0.91), 0.64 (0.47-0.88), 0.59 (0.40-0.87), and 0.63 (0.45-0.87) in the highest versus lowest tertiles of magnesium, calcium, iron, and zinc, respectively. Conclusion: Results suggest that higher dietary intake of magnesium, calcium, iron, and zinc is associated with lower prevalence of depressive symptoms in Japanese employees. [ABSTRACT FROM AUTHOR]
- Published
- 2015
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