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Nutrition. 2016 May;32(5):584-9. doi: 10.1016/j.nut.2015.11.014. Epub 2015 Dec 23.

Dietary fiber intake and depressive symptoms in Japanese employees: The Furukawa Nutrition and Health Study.

Author information

1
Department of Epidemiology and Prevention, Center for Clinical Sciences, National Center for Global Health and Medicine, Tokyo, Japan; Department of Mental Health, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan. Electronic address: takakomiki-tky@umin.ac.jp.
2
Department of Health Administration, Furukawa Electric Corporation, Tokyo, Japan.
3
Department of Epidemiology and Prevention, Center for Clinical Sciences, National Center for Global Health and Medicine, Tokyo, Japan.
4
Department of Epidemiology and Prevention, Center for Clinical Sciences, National Center for Global Health and Medicine, Tokyo, Japan; Teikyo University Graduate School of Public Health, Tokyo, Japan.
5
Department of Nutrition and Life Science, Faculty of Life Science and Biotechnology, Fukuyama University, Hiroshima, Japan.
6
Department of Mental Health, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.

Abstract

OBJECTIVE:

Dietary fiber may play a favorable role in mood through gut microbiota, but epidemiologic evidence linking mood to dietary fiber intake is scarce in free-living populations. We investigated cross-sectionally the associations of dietary intakes of total, soluble, insoluble, and sources of fiber with depressive symptoms among Japanese workers.

METHODS:

Participants were 1977 employees ages 19-69 y. Dietary intake was assessed via a validated, brief self-administered diet history questionnaire. Depressive symptoms were assessed using the Center for Epidemiologic Studies Depression Scale. Logistic regression was used to estimate odds ratios of depressive symptoms adjusted for a range of dietary and non-dietary potential confounders.

RESULTS:

Dietary fiber intake from vegetables and fruits was significantly inversely associated with depressive symptoms. The multivariable-adjusted odds ratios (95% confidence intervals) for the lowest through the highest tertile of vegetable and fruit fiber were 1.00 (reference), 0.80 (0.60-1.05), and 0.65 (0.45-0.95), respectively (P for trend = 0.03). Dietary intake of total, soluble, insoluble, and cereal fiber was not associated with depressive symptoms.

CONCLUSIONS:

Higher dietary fiber intake from vegetables and fruits may be associated with lower likelihood of having depressive symptoms.

KEYWORDS:

Cross-sectional studies; Depression; Diet; Dietary fiber; Japanese

PMID:
26810963
DOI:
10.1016/j.nut.2015.11.014
[Indexed for MEDLINE]

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