Fasting for immunity: tiny study tests 36-Hour Water-Only fast

NCT ID NCT05104502

Recruiting now Knowledge-focused Sponsor: University of California, Davis Source: ClinicalTrials.gov ↗

First seen Jun 26, 2026 · Last updated Jul 07, 2026 · Updated 3 times

Summary

This study looks at how a 36-hour water-only fast changes immune cells in healthy young men. Four participants will have blood drawn before, during, and after fasting to measure immune markers. It's a very small, early-stage trial aimed at understanding, not treating, any condition.

What this could mean

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

Active substance: water-only fasting
What this could lead to: If successful, this could help scientists understand how fasting influences the immune system, potentially pointing toward dietary strategies for immune health.
What could go wrong: This is a very small, early study with only 4 participants, so results may not apply to the general population. It only looks at short-term changes, not long-term effects or benefits.

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.

Fasting

As listed by the trial registrant

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

FASTING

Contacts and locations

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Study contacts

Contact

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

Locations

UC Davis
RECRUITING

Sacramento, California, 95816, United States

Contact

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