Association of dietary fiber and depression symptom: A systematic review and meta-analysis of observational studies.

Complementary Therapies in Medicine
Somaye FatahiFarzad Shidfar

Abstract

A potential relationship between depression and the intake of dietary fiber has been hypothesized in several studies. However, no meta-analysis has been conducted so far to explore the association between these two variables. Hence, we designed the present meta-analysis to elucidate the relationship between the intake of dietary fiber and depression. A comprehensive search was performed using the PubMed/Medline, Scopus, Web of Science and Google Scholar databases to identify any relevant studies published from inception to October 2019. Observational studies (cross-sectional and case-control) were included in the analysis. Pooled analysis from the random-effects model of four case-control studies revealed that the consumption of dietary fiber in patients with depression was significantly lower versus healthy controls (WMD: -1.41 mg/dl, 95 % CI: -2.32, -0.51, P = 0.002). No significant heterogeneity was demonstrated among the analyzed studies (I2 = 4.0 %, P = 0.37). By pooling 5 effect sizes of cross-sectional studies (with a total of 97,023 subjects), we demonstrated that a higher dietary consumption of fiber was associated with significantly lower odds of depression (OR = 0.76; 95 % CI: 0.64, 0.90; P = 0.010), with a low heter...Continue Reading

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Citations

Mar 2, 2021·Experimental Biology and Medicine·Kirsten BerdingJohn F Cryan
Jul 25, 2021·International Journal of Environmental Research and Public Health·Jun Zhang
Nov 3, 2021·The International Journal of Behavioral Nutrition and Physical Activity·Annette Løvheim KleppangTonje Holte Stea

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