Journal
MICROORGANISMS
Volume 10, Issue 12, Pages -Publisher
MDPI
DOI: 10.3390/microorganisms10122507
Keywords
dietary fiber; gut microbiota; diabetes; modulation
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Dietary fiber intake is closely related to the health of the gut microbiota, and a decrease in dietary fiber intake may contribute to the global epidemic of metabolic disorders such as obesity and type 2 diabetes. The effects of dietary fiber on the gut microbiota are specific to the type, amount, and duration of intake. Understanding the interaction between dietary fiber and the gut microbiota can provide insights for optimal intervention strategies for patients.
Dietary fiber is fermented by the human gut microbiota, producing beneficial microbial metabolites, such as short-chain fatty acids. Over the last few centuries, dietary fiber intake has decreased tremendously, leading to detrimental alternations in the gut microbiota. Such changes in dietary fiber consumption have contributed to the global epidemic of obesity, type 2 diabetes, and other metabolic disorders. The responses of the gut microbiota to the dietary changes are specific to the type, amount, and duration of dietary fiber intake. The intricate interplay between dietary fiber and the gut microbiota may provide clues for optimal intervention strategies for patients with type 2 diabetes and other noncommunicable diseases. In this review, we summarize current evidence regarding dietary fiber intake, gut microbiota modulation, and modification in human health, highlighting the type-specific cutoff thresholds of dietary fiber for gut microbiota and metabolic outcomes.
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