Butter vs. fake fats: which is worse for your health?

NCT ID NCT00617435

Completed Knowledge-focused Sponsor: Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement Source: ClinicalTrials.gov ↗

First seen Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study looked at how different types of trans fats—one from dairy products and one from processed foods—affect insulin resistance in obese women. Sixty-six participants were given special diets to compare the effects. The goal was to understand if natural trans fats are less harmful than industrial ones.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance: vaccenic acid enriched diet, elaidic acid enriched diet, control diet
What this could lead to: If successful, this could clarify whether natural trans fats from dairy are less harmful than industrial ones, guiding healthier dietary recommendations.
What could go wrong: This is a small, completed observational study with only 66 participants. Results may not apply to men or non-obese individuals, and dietary effects can vary widely.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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Conditions

The condition(s) this trial relates to.

Insulin Resistance Obesity obesity disorder

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

INSULIN RESISTANCE OBESITY

Contacts and locations

Locations

Centre de Recherche en Nutrition Humaine Auvergne

Clermont-Ferrand, 63000, France
Centre de Recherche en Nutrition Humaine Rhônes-Alpes

Lyon, 69000, France

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