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the claim

Weight loss is a reduction of total body mass caused by a loss of fluid, body fat, or lean mass.

the verdict
SUPPORTED
the evidence backs this
Recorded sources
5 sources for · 0 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 weight loss is a reduction of total body mass caused by a loss of fluid, body fat, or lean mass?

Yes. Weight loss is defined medically as a reduction in total body mass resulting from a decrease in fluids, body fat, or lean tissue.

Verdict: SUPPORTED · 5 sources for, 0 against · Last checked

How claims like this are judged

Judged against reference works: claims of this kind are settled by reference works, not journal abstracts.

Evidence for · 5
Wikipedia: Weight loss
Reference article covering this claim directly
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Wikipedia: Weight loss. (n.d.). Wikipedia. https://en.wikipedia.org/wiki/Weight_loss

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More for · 4
PLOS (all journals): Sexual Dimorphic Regulation of Body Weight Dynamics and Adipose Tissue Lipolysis
Analyzes body composition changes during weight loss, confirming reductions in fat mass and lean mass.
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PLOS (all journals): Sexual Dimorphic Regulation of Body Weight Dynamics and Adipose Tissue Lipolysis. (n.d.). PLOS (all journals). https://doi.org/10.1371/journal.pone.0037794

ClinicalTrials.gov: Weight Loss Intervention With Lean Muscle Mass Retention (WLMR) Study
Discusses weight loss involving changes in body weight, body fat, and lean muscle mass.
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ClinicalTrials.gov: Weight Loss Intervention With Lean Muscle Mass Retention (WLMR) Study. (n.d.). ClinicalTrials.gov. https://clinicaltrials.gov/study/NCT05607628

Semantic Scholar peS2o: Preclinical evaluation of a protracted GLP-1/glucagon receptor co-agonist: Translational difficulties and pitfalls
Notes that body weight loss is caused by loss of fat mass or lean mass.
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Semantic Scholar peS2o: Preclinical evaluation of a protracted GLP-1/glucagon receptor co-agonist: Translational difficulties and pitfalls. (n.d.). Semantic Scholar peS2o. https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0264974&type=printable

PubMed / MEDLINE: PubMed: [Possibilities of calculating the fat-free body mass and its reaction to a carbohydrate-poor, fat-rich diet].
Evaluates body-weight reduction and components like fat-free mass and body water.
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PubMed / MEDLINE: PubMed: [Possibilities of calculating the fat-free body mass and its reaction to a carbohydrate-poor, fat-rich diet].. (n.d.). PubMed / MEDLINE. https://pubmed.ncbi.nlm.nih.gov/574860/

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