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the claim

Differences in gut microbiome composition affect how much weight people lose on a diet.

the verdict
CONTESTED PARTIAL
Recorded sources
1 source for · 1 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that differences in gut microbiome composition affect how much weight people lose on a diet?

Partly. One single-cohort study reports that baseline gut microbiome differences predict weight loss on a calorie-restricted diet, while a systematic review describes the reverse relationship, that weight loss itself shifts the microbiome, and notes substantial inter-individual variability. Neither settles whether microbiome composition causally affects how much weight people lose.

Verdict: CONTESTED PARTIAL · 1 source for, 1 against · Last checked

The private library was unavailable for some searches in this check. Missing library results are not evidence against the claim.

Evidence for · 1
Frontiers | The Intestinal Microbiome Predicts Weight Loss on a Calorie-Restricted Diet and Is Associated With Improved Hepatic Steatosis
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Frontiers | The Intestinal Microbiome Predicts Weight Loss on a Calorie-Restricted Diet and Is Associated With Improved Hepatic Steatosis. (n.d.). frontiersin.org. https://www.frontiersin.org/journals/nutrition/articles/10.3389/fnut.2021.718661/full

Evidence against · 1
The association of weight loss with changes in the gut microbiota diversity, composition, and intestinal permeability: a systematic review and meta-analysis -
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The association of weight loss with changes in the gut microbiota diversity, composition, and intestinal permeability: a systematic review and meta-analysis - PMC Lock. (n.d.). pmc.ncbi.nlm.nih.gov. https://doi.org/10.1080/19490976.2021.2020068

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