Dietary Fiber Intake Influence The Human Gut Microbiota

Livingston 1 martin obin 3 susan b.

Dietary fiber intake influence the human gut microbiota. Food is a primordial need for our survival and well being. Supports the well known selective use of prebiotic fibers for the gut microbiota. The selective increase in both bifidobacterium spp.

Type quality and origin of. Diet particularly fibre intake may modify gut microbiota composition which may affect cancer risk. Evidence for the influence of dietary fiber on gut microbiota from intervention studies a summary is given in table 1 of recent representative human dietary interventions investigating how most common types of dietary fibers contribute to remodeling the gut microbiota.

A randomised double blind placebo controlled cross over human intervention study br j nutr. Dietary fiber a major energy source for gut bacterial fermentation and an influence on systemic estrogen levels may also shape the gut microbiome. Therefore we aimed to investigate the influence of differing habitual dietary fibre intakes on the responsiveness of the gut microbiota to an inulin type fructan.

We investigated the relationship between dietary fibre intake and gut microbiota in adults. Investigated the consequences of the lack of fiber referred to as macs intake in mice colonized with a human microbiota and showed that a low mac diet led to dramatically reduced microbial diversity in just three generations which could not be restored when mice were moved to a normal mac diet sonnenburg et al. Dietary fiber and the human gut microbiota.

To date no human studies have been conducted with the primary aim of determining whether habitual dietary intake influences gut microbiota responsiveness to a dietary intervention. Diet influences which microbes colonise flourish retain or disappear in humans throughout life. In contrast dietary fiber did not affect the relative abundance of other bacteria including faecalibacterium prausnitzii roseburia spp eubacterium rectale and ruminococcus bromii.

Using 16s rrna gene sequencing we assessed gut microbiota in faecal samples from 151 adults in two independent study populations. Roberts 4 mei chung 5. The fiber hypothesis is supported by short term dietary interventions 18 22 but there is only sparse data evaluating the impact of long term dietary fiber on the gut microbiome 23 24.