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Clinical Trial Summary

This study aims to investigate the relationship between diet and the microbiota-gut-brain axis.


Clinical Trial Description

Dietary fibre is well-known for its many health benefits, including the support of gastrointestinal, metabolic, and mental health. Although studies investigating whole dietary patterns in relation to cognition have demonstrated that diet quality and a healthy dietary pattern are associated with better cognitive performance, the role of dietary fibre in this regard is understudied. It is now understood that the gut microbiota (trillions of microbes inhabiting the gastrointestinal tract) communicates bidirectionally with the brain to influence mental health and cognition. Importantly, dietary fibre has been shown to positively affect the microbiota composition. The aim of this study is to understand the effects of dietary fibre on the microbiota-gut-brain axis. Using a cross-sectional design, habitual low fibre (<=18 grams/day, n=200), moderate fibre (18.1-24.9 grams/day, n=75), and high fibre (=>25 g/day, n=75) consumers will be compared at baseline on measures of cognition, responses to acute and chronic stress, and biological markers of the microbiota-gut-brain axis. The investigators hypothesize that participants with higher dietary fibre intake at baseline will perform better in the cognitive tasks compared to individuals with low fibre intake, and that this difference can, in part, be mediated by the gut microbiota. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT05931536
Study type Observational
Source University College Cork
Contact Elizabeth Schneider, PhD
Phone (+353) 021 4901721
Email eschneider@ucc.ie
Status Recruiting
Phase
Start date July 14, 2022
Completion date July 2024

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