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Several possible studies

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Leptin: The Hormone That Could Turbocharge Your Weight Loss Drug (opens in a new tab)

webmd.com · 2026-04-01

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Short answer

Several possible studies

No clear answer.

More than one paper fits the article's details, and none fits well enough to single out. Checking claims against the wrong study would be worse than not checking them at all.

Checked against the study summary. The full text wasn't available, so some details couldn't be settled either way.

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NewsLink checks it

Several studies could be the source of this story.

More than one paper fits the article's details, and none fits well enough to single out. Checking claims against the wrong study would be worse than not checking them at all.

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Several studies could fit.

More than one paper fits the article's details, and none fits well enough to single out. Checking claims against the wrong study would be worse than not checking them at all.

Source paper

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The 2 papers the story cites

Source study separated from background citations.

The research anchor for the report.

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The papers it could be

Nearby papers when the source is unclear.

and 15 more considered

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What the story asserts. With no source study, there is nothing to check these against.

Claim 1 of 7Not checkedA landmark 1994 paper reported that a rare strain of mice was missing leptin, a hormone that tells the brain to feel full, and the finding initially inspired hopes for a miracle weight-loss drug.View evidenceHide evidence

Not checked

NewsLink could not identify one source study, so this claim was not compared against a paper.

Claim 2 of 7Not checkedClinical trials of leptin for obesity fell short, and interest in leptin as a stand-alone obesity drug faded.View evidenceHide evidence

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NewsLink could not identify one source study, so this claim was not compared against a paper.

Claim 3 of 7Not checkedMetreleptin only worked for a small subset of people with genetically low leptin, while most people with obesity were described as leptin resistant.View evidenceHide evidence

As statedfewer than 10% of people with obesity lack leptin; the other 90% are leptin resistant

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NewsLink could not identify one source study, so this claim was not compared against a paper.

Claim 4 of 7Not checkedA Michigan physician said leptin injections normalized labs in a teenager with lipodystrophy, and the FDA later approved metreleptin for the most serious forms of lipodystrophy.View evidenceHide evidence

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NewsLink could not identify one source study, so this claim was not compared against a paper.

Claim 5 of 7Not checkedResearchers are now testing leptin-related combinations with GLP-1 drugs, and one recent study reported that a dual leptin/GLP-1 receptor activator produced greater weight loss in mice than either target alone, especially in obese mice lacking leptin.View evidenceHide evidence

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NewsLink could not identify one source study, so this claim was not compared against a paper.

Claim 6 of 7Not checkedAnother 2025 study from Friedman’s lab reported cellular mechanisms for leptin resistance in the hypothalamus, and the drug rapamycin restored leptin sensitivity in mice.View evidenceHide evidence

Not checked

NewsLink could not identify one source study, so this claim was not compared against a paper.

Claim 7 of 7Not checkedA separate line of work argues that lowering leptin may help treat obesity, diabetes, and other age-related diseases by reducing leptin resistance and excess-leptin effects.View evidenceHide evidence

Not checked

NewsLink could not identify one source study, so this claim was not compared against a paper.

Finally, the search trail

Method layer

No single source study was found.

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No exact source, but these papers are close.

Crossref, PubMed, Europe PMC · 17 candidate papers

And 12 more candidates considered.