The Claim
Over 90% of the carbon from microbiota-available carbohydrates is converted by gut microbes into fermentation products such as acetate, propionate, and butyrate, with less than 2% excreted in feces, indicating that the majority of these microbial fermentation products are absorbed by the host's colon epithelium.
What the research says
Not yet evaluated
We are still looking at what the research says.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
Most of the stuff your gut bacteria eat turns into helpful chemicals like butyrate, and your body soaks up almost all of it—very little ends up in poop.
See the scientific wording
The majority of carbon from microbiota-available carbohydrates—over 90%—is converted into fermentation products such as acetate, propionate, and butyrate, with less than 2% excreted in feces, indicating that most microbial fermentation products are absorbed by the host colon epithelium.
What the research says
1 studyStudy: Quantifying the varying harvest of fermentation products from the human gut microbiota
The study shows that when gut bacteria break down fiber from food, most of what they produce is absorbed by your body, just like the claim says.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.