Fasting for 36 hours: could it reboot your immune system?
NCT ID NCT05104502
First seen Jan 04, 2026 · Last updated Jun 20, 2026 · Updated 30 times
Summary
This study looks at how a 36-hour water-only fast changes the immune system in healthy adults. Four men aged 20-40 will have their blood tested before, during, and after fasting. Researchers will check for changes in immune cells and gene activity. It is a small, early-stage study to gather basic knowledge.
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Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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Contacts and locations
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Study contacts
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Locations
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UC Davis
RECRUITINGSacramento, California, 95816, United States
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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 changes the immune system, possibly pointing toward future health strategies.
What could go wrong
This is a very small, early study with only 4 healthy men. Results may not apply to women or other groups, and the effects may be minor or not meaningful.
Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.