Scientists probe why some lose weight faster: metabolism mystery unlocked?
NCT ID NCT07627256
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looks at how losing fat versus muscle during a low-calorie diet changes your resting metabolic rate. About 150 adults with overweight or obesity will follow a structured diet, and researchers will measure body composition and metabolism before and after. The goal is to understand why some people experience a bigger drop in metabolism, which could help improve future weight loss programs.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 150 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Jun 2026
An estimate. Start dates often move.
- Expected to finish
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Dec 2027
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria * Adults aged 18 years and older. * Individuals living with overweight or obesity. * Willingness and ability to comply with dietary recommendations and study procedures. * Provision of written informed consent. Exclusion Criteria * Diagnosed metabolic or endocrine disorders known to affect energy expenditure. * Use of medications known to substantially affect metabolism or body composition. * Pregnancy or breastfeeding. * Any medical condition that, in the opinion of the investigators, precludes safe participation.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
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