Your immune age changes with the clock: new study reveals timing matters

NCT ID NCT07169721

Completed Knowledge-focused Sponsor: Leibniz Research Centre for Working Environment and Human Factors Source: ClinicalTrials.gov ↗

First seen Jun 25, 2026 · Last updated Jun 26, 2026 · Updated 1 time

Summary

This study looked at whether the time of day changes a person's 'immune age' — a blood-based score that reflects how well the immune system is aging. Researchers took blood samples from 50 healthy adults aged 20 to 69 at three different times (morning, midday, and evening) on the same day. The goal was to see if the immune age score (called IMMAX) varies with circadian rhythm, which could help improve how we measure immune health.

What this could mean

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

What this could lead to: If successful, this could help researchers understand how to measure immune age more accurately by accounting for time-of-day effects.
What could go wrong: This is a small observational study in healthy people, not a treatment trial. The findings may not apply to people with illnesses or different lifestyles.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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As listed by the trial registrant

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

HEALTHY SUBJECTS IMMUNE CELLS (MUCOSAL AND SYSTEMIC)

Contacts and locations

Locations

Leibniz Research Centre for Working and Environment and Human Factors

Dortmund, 44139, Germany

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