Scientists probe the body clock to unravel sleep delay mystery
NCT ID NCT06471374
First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study aims to understand what causes delayed sleep wake phase disorder (DSWPD), a condition where people's sleep times are shifted later. Researchers will compare 66 participants with DSWPD to healthy controls by measuring body temperature, melatonin, and thinking ability during a 66-hour lab stay. They will also test a new blood-based method to predict circadian rhythms.
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 lead to better ways to diagnose and understand delayed sleep phase disorder, possibly improving treatments.
What could go wrong
This is an observational study, not a treatment trial. It is small and early-stage, so findings may not lead to immediate clinical changes.
Disclaimer
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the original study
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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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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.
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Contacts and locations
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Study contacts
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Contact
Phone: •••-•••-•••• Email: •••••@•••••
Locations
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Northwestern University
RECRUITINGChicago, Illinois, 60611, United States
Contact
Contact Phone: •••-•••-••••
Contact
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University of Colorado
RECRUITINGBoulder, Colorado, 80303, United States
Contact Phone: •••-•••-•••• Email: •••••@•••••