Obesity-Brain link probed: sugar, gut bugs, and iron under the microscope
NCT ID NCT03889132
First seen Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This completed study looked at 128 adults with obesity to understand how blood sugar levels, gut bacteria, and brain iron deposits are connected to thinking skills. Some participants followed a diet or had bariatric surgery, but the goal was to observe changes over one year, not to test a new treatment. The findings may help explain why obesity affects brain health.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
What this could lead to
If successful, this research could reveal how obesity affects brain health and thinking, pointing toward future ways to protect memory and mental sharpness.
What could go wrong
This is an observational study, not a treatment trial. It only looks for connections, so it cannot prove cause and effect or lead directly to a new therapy.
Disclaimer
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This is a summary of
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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Institut d'Investigació Biomèdica de Girona (IDIBGI)
Girona, Girona, 17007, Spain