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

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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.

CONCLUSIONS:

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

Miki T1, Eguchi M2, Kurotani K3, Kochi T2, Kuwahara K4, Ito R2, Kimura Y5, Tsuruoka H2, Akter S3, Kashino I3, Kabe I2, Kawakami N6, Mizoue T3. Nutrition. 2015 Dec 23. pii: S0899-9007(15)00523-7. doi: 10.1016/j.nut.2015.11.014.