Probiotic milk may keep triathletes Sniffle-Free

NCT ID NCT06970964

First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study tested whether a daily probiotic drink (like Yakult) can reduce cold symptoms in triathletes before and after a competition. 80 healthy amateur triathletes drank either the probiotic or a placebo for 30 days before and 14 days after a race. Researchers tracked symptoms and immune markers to see if the probiotic helped.

What this could mean

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

Active substance
fermented milk containing Lacticaseibacillus paracasei strain Shirota (probiotic)
What this could lead to
If it works, this could offer a simple, non-drug way for athletes to reduce cold symptoms during intense training and competition.
What could go wrong
This is a small, early-stage study in healthy athletes, so results may not apply to the general public. The effect may be small or no different from placebo.

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Conditions

The condition(s) this trial relates to.

depressive disorder Inflammation Motor Activity Psychological Well-Being respiratory tract infectious disorder Signs and Symptoms, Respiratory

As listed by the trial registrant

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

Contacts and locations

Locations

  • Federal University of Sao Paulo

    São Paulo, São Paulo, 04039-032, Brazil

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