Could dimming lights and early dinners boost insulin sensitivity?
NCT ID NCT05943626
First seen Aug 05, 2026 · Last updated Aug 06, 2026 · Updated 1 time
Summary
This study tests whether a behavioral program that reduces evening light exposure and encourages finishing meals at least four hours before bedtime can improve how the body handles sugar. Overweight adults aged 18-45 who habitually sleep less than 6.5 hours per night will be randomly assigned to either this circadian intervention or a standard healthy lifestyle advice group. The main goal is to see if the circadian approach improves insulin sensitivity, which is a key marker of metabolic health.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
- Active substance
- A behavioral program that reduces evening and nighttime light exposure, increases morning light, and stops eating at least 4 hours before bedtime.
- What this could lead to
- If effective, this simple lifestyle approach could offer a drug-free way to improve insulin sensitivity and reduce cardiometabolic risk in people who sleep poorly.
- What could go wrong
- This is a small early-stage trial, so results may not apply broadly. The intervention relies on participants sticking to strict light and eating schedules, which may be hard to maintain.
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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
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Locations
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College of Health Research Complex--University of Utah
RECRUITINGSalt Lake City, Utah, 84112, United States
Contact Email: •••••@•••••
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