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Breath test could reveal how your gut handles fiber

NCT ID NCT07594600

Recruiting now Knowledge-focused Sponsor: Örebro University, Sweden Source: ClinicalTrials.gov ↗

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

Summary

This study looks at how eating low or high amounts of fiber changes the compounds in your breath and gut. Twenty healthy adults will try both a low-fiber (10g/day) and a high-fiber (40g/day) diet for three days each, with a three-week break in between. Researchers will measure breath and stool samples to see how gut bacteria break down fiber. The goal is to find simple breath markers that could help understand digestion better.

What this could mean

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

Active substance
dietary fiber (low and high doses)
What this could lead to
If successful, this could help identify breath markers that show how well the body digests fiber, potentially guiding personalized nutrition advice.
What could go wrong
This is a very small, early-stage study with only 20 healthy participants, so results may not apply to everyone. It is designed to gather knowledge, not to test a treatment.

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

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As listed by the trial registrant

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

ASSOCIATION BETWEEN DIETARY FIBER INTAKE AND VOLATILE ORGANIC COMPOUND PROFILES IN EXHALED BREATH DIETARY FIBER FERMENTATION HEALTHY ADULT PARTICIPANTS HEALTHY ADULTS

Contacts and locations

Study contacts

  • Contact

    Phone: •••-•••-•••• Email: •••••@•••••

  • Contact

    Phone: •••-•••-•••• Email: •••••@•••••

Locations

  • Örebro University

    RECRUITING

    Örebro, Sweden

    Contact Email: •••••@•••••

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