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Late-Night snacking under the lights? study reveals how it messes with your metabolism

NCT ID NCT07329283

Knowledge-focused Sponsor: University of Utah Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study looks at how different patterns of light exposure and food intake affect the body's metabolism when sleep is reduced. Researchers will monitor 120 healthy adults aged 18-35 over 4-6 months, including three overnight clinic stays. The goal is to understand how these factors disrupt the body's internal clock and energy use, not to test a treatment.

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

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 120 people

The number the study aims to enrol. It can still change while the study runs.

Started

Dec 2025

Expected to finish

May 2031

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 to 35 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: 1. Age: 18-35 years old; equal numbers of men and women 2. Body Mass Index (BMI): 18.5-24.9 kg/m2 3. Sleep Habits: habitual self-reported average total sleep time (TST) 7-9 hours per night for prior 6 months Exclusion Criteria: 1. Clinically diagnosed sleep disorder or apnea hypopnea index (AHI) ≥5 2. Evidence of significant organ system dysfunction or disease (e.g., heart disease, diabetes) 3. Fasting plasma glucose ≥100 mg/dL 4. Major psychiatric illness (e.g., major depressive disorder) 5. Cancer that has been in remission less than 5 years 6. History of shift-work in prior year 7. Weight change \>5% of body weight over prior six months 8. Currently following a weight-loss program 9. Menopause 10. Pregnant/nursing 11. Greater than 5-day variation in menstrual cycle length month-to-month 12. Currently smoking 13. Alcohol intake \>14 drinks/week or \>3 drinks/day. 14. Use of prescription medications (except oral contraceptives) within one month prior to or during in-lab visits. 15. Consumption of illegal drugs or \>500mg per day of caffeine.

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Conditions

The condition(s) this trial relates to.

Achoo syndrome Chronobiology Disorders circadian rhythm sleep disorder metabolic disease Sleep Deprivation sleep disorder Sleep Hygiene

As listed by the trial registrant

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

Circadian dysregulation Circadian misalignment Circadian rhythm Insufficient sleep Lifestyle factors Light exposure Metabolism changes Sleep Sleep deprivation Sleep hygiene Sleep hygiene, inadequate

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The study's own enquiry address

    This study publishes an address for enquiries. See it below .

  2. The places running it

    1 site. The list below names each one and where it is.

  3. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  4. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Study contacts

  • Contact

    Email: •••••@•••••

  • Contact

    Email: •••••@•••••

Locations

  • College of Health Research Complex - University of Utah, Salt Lake City 84112

    RECRUITING

    Salt Lake City, Utah, 84112, United States

    Contact Email: •••••@•••••

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