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Dietary fiber and its associations with depression and inflammation

Swann, OG, Kilpatrick, M ORCID: 0000-0001-6039-9154, Breslin, M ORCID: 0000-0002-8135-3136 and Oddy, WH ORCID: 0000-0002-6119-7017 2019 , 'Dietary fiber and its associations with depression and inflammation' , Nutrition Reviews , pp. 1-18 , doi: 10.1093/nutrit/nuz072.

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Abstract

Dietary fiber is a crucial component of a healthy diet, with benefits that can be attributed to processes in the gut microbiota and the resulting by-products. Observational studies support associations between dietary fiber intake and depression and inflammation, but the potential mechanisms are poorly understood. This review examines evidence of the effects of dietary fiber on depression and inflammation and considers plausible mechanisms linking dietary fiber and depression, including microbiota-driven modification of gene expression and increased production of neurotransmitters. Additionally, inflammation may mediate the relationship between dietary fiber intake and depression. A high-fiber diet potentially lowers inflammation by modifying both the pH and the permeability of the gut. The resultant reduction in inflammatory compounds may alter neurotransmitter concentrations to reduce symptoms of depression. Further research into the link between dietary fiber intake and inflammation and depression is essential, as findings could potentially provide guidance for improvement in or prevention of inflammatory and depressive disorders.

Item Type: Article
Authors/Creators:Swann, OG and Kilpatrick, M and Breslin, M and Oddy, WH
Keywords: gut, depression, dietary fiber, inflammation, mental health, microbiota
Journal or Publication Title: Nutrition Reviews
Publisher: Int Life Sciences Inst North America
ISSN: 0029-6643
DOI / ID Number: 10.1093/nutrit/nuz072
Copyright Information:

Copyright The Author(s) 2019.

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