Gut feeling: probiotic may ease stress and anxiety

NCT ID NCT07216729

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study tested whether a daily probiotic supplement (Lactobacillus reuteri) could lower stress, anxiety, and depressive symptoms in 150 adults aged 18-45 who reported feeling stressed. Participants took either the probiotic or a placebo for several weeks and completed surveys about their mood. The goal was to see if the probiotic helped them feel less stressed in the moment and over time.

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Conditions

The condition(s) this trial relates to.

As listed by the trial registrant

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Contacts and locations

Locations

  • University of Colorado Boulder, Muenzinger Psychology Building

    Boulder, Colorado, 80309, United States

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