Butter vs. olive oil: which fat fights inflammation best?
NCT ID NCT06640036
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looked at how three different types of dietary fats affect inflammation, blood fats, blood sugar, and gut bacteria in 25 healthy adults aged 18-60. Participants ate special diets to see which fat source caused the least inflammation and best heart health markers. The goal was to understand how food choices influence risk factors for diabetes and heart disease.
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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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25 people
The number who actually took part.
- Started
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Apr 2025
- Finished
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Dec 2025
- 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 to 60 years
- 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: * Age 18-60 * Willing to eat the study diet Exclusion Criteria: * malabsorption-related condition * contraindications to consume a high fat diet * intolerance to any foods used in the study (e.g. cow's milk, egg, gluten) * established cardiovascular disease, diabetes or cancer * current use of medication known to affect lipid metabolism (e.g. statins) or inflammation (e.g. NSAID, glucocorticoids). * hemoglobin \<100 g/L * ongoing pregnancy or lactation
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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
Locations
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University of Gothenburg
Gothenburg, 40530, Sweden
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