Diet vs. surgery: which weight loss method changes metabolism more?
NCT ID NCT03091725
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looks at how the body handles different types of meals after losing about 16-18% of body weight through either a low-calorie diet or gastric bypass surgery. Researchers will measure insulin, blood sugar, fats, and other markers in 30 adults with obesity but without diabetes. The goal is to understand how each weight loss method affects metabolism, not to test a new treatment.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
Active substance
Roux-en-Y gastric bypass surgery and low-calorie diet
What this could lead to
If successful, this study could help explain why some weight-loss methods improve metabolism more than others, potentially guiding better obesity treatments.
What could go wrong
This is a small, early-stage observational study with only 30 participants, so results may not apply to everyone. It does not test a new drug or treatment.
Disclaimer
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the original study
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Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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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.
Contacts and locations
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Locations
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Beth Henk
St Louis, Missouri, 63110, United States