Body clock battle: light or meals?
NCT ID NCT05276739
First seen Jun 27, 2026 · Last updated Aug 07, 2026 · Updated 2 times
Summary
This study aims to find out whether bright light or meal timing is the main signal that resets the body's internal clock. Researchers will expose 48 healthy adults aged 18-30 to different combinations of light and meal schedules in a controlled setting. They will measure changes in melatonin and other metabolic markers to see which cue has the strongest effect.
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 clarify how to better use light or meal timing to adjust circadian rhythms, potentially aiding shift workers or jet lag recovery.
- What could go wrong
- This is a small, early-phase study in healthy young adults, so results may not apply to older or less healthy populations. It is observational in nature and does not test a treatment.
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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.
Contacts and locations
Locations
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Brigham and Women's Hospital
Boston, Massachusetts, 02115, United States
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Other studies related to the condition(s) this trial covers.