Gut-Brain link: probiotic may slow memory decline in seniors

NCT ID NCT07165977

Ongoing Symptom relief Sponsor: University of Social Sciences and Humanities, Warsaw Source: ClinicalTrials.gov ↗

First seen Jun 25, 2026 · Last updated Jun 26, 2026 · Updated 2 times

Summary

This study tests whether a daily probiotic supplement can improve memory and thinking in adults aged 50 and older. Over 6 months, participants take either the probiotic or a placebo for 3 months, then switch. Researchers measure memory tests, brain activity, and gut bacteria to see if diet and microbiome affect results.

What this could mean

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

Active substance: Probiotic supplement (Bifidobacterium longum Rosell®-175 and Lactobacillus helveticus Rosell®-52)
What this could lead to: If it works, this could point toward a simple, safe way to slow age-related memory decline using a daily probiotic.
What could go wrong: This is a small, early-stage crossover study with 110 participants. The effect may be small or not last, and results may not apply to everyone.

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.

Cognitive Dysfunction

As listed by the trial registrant

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

COGNITIVE AGING COGNITIVE DECLINE MEMORY DECLINE

Contacts and locations

Locations

SWPS University

Warsaw, Masovian Voivodeship, 03-815, Poland

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