Gut bacteria may hold key to Obesity-Related insulin resistance

NCT ID NCT06768827

First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study looks at how the fermentation of food in the gut affects metabolism in young people aged 15–22 with obesity. Researchers will give participants a sugar called lactulose to trigger fermentation and measure changes in fat breakdown and sugar production. The goal is to understand why some people with obesity develop insulin resistance, which can lead to diabetes.

What this could mean

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

Active substance
lactulose
What this could lead to
If successful, this could help explain why some people with obesity develop insulin resistance and point to new ways to prevent or manage it.
What could go wrong
This is an early, small observational study (55 participants) that does not test a treatment. It may not lead to any direct benefit for participants or translate into real-world changes.

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Conditions

The condition(s) this trial relates to.

Insulin Resistance Obesity obesity disorder Overweight

As listed by the trial registrant

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

Contacts and locations

Locations

  • Yale University

    RECRUITING

    New Haven, Connecticut, 06520, United States

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