The Claim

Higher cumulative dietary fiber intake from infancy to age 26 is associated with an increased abundance of the butyrate-producing genus Butyrivibrio (log2 fold-change = 0.40 per unit increase in cumulative fiber intake, adjusted p = 0.023) and decreased abundance of other known butyrate-producing genera such as Faecalibacterium and Subdoligranulum.

Source: Association of long-term habitual dietary fiber intake since infancy with gut microbiota composition in young adulthood.

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
45score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

Correlation
1 study reviewed
In plain English

People who consumed more dietary fiber from infancy through age 26 had higher levels of the gut bacterium Butyrivibrio and lower levels of other butyrate-producing bacteria like Faecalibacterium and Subdoligranulum.

See the scientific wording

Higher cumulative dietary fiber intake from infancy to age 26 is associated with increased abundance of the butyrate-producing genus Butyrivibrio (log2 fold-change = 0.40 per unit increase in cumulative fiber intake, adjusted p = 0.023), while other known butyrate producers such as Faecalibacterium and Subdoligranulum show decreased abundance.

Why this might work

When fiber passes through the gut undigested, it feeds bacteria that break it down and make butyrate. One type of bacteria, Butyrivibrio, grows better than others when there is a lot of fiber over many years, so it becomes more common. Other bacteria that also make butyrate, like Faecalibacterium and Subdoligranulum, become less common because they cannot compete as well under these conditions.

Supported mechanismbased on 1 study

What the research says

1 study

  1. Study: Association of long-term habitual dietary fiber intake since infancy with gut microbiota composition in young adulthood.

    People who ate more fiber from when they were babies until they were 26 had more of one good gut bacteria called Butyrivibrio and less of two others, Faecalibacterium and Subdoligranulum. The study directly measured this and found it to be true.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

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