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Sleep more, sugar less? new study tests melatonin and morning light for teens

NCT ID NCT07618117

Disease control Sponsor: University of Colorado, Denver Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 whether improving sleep habits can help teenagers with overweight or obesity better regulate blood sugar and energy. Researchers will enroll 60 teens aged 14-19 who get less than 7 hours of sleep on school nights. For two weeks, participants will follow a sleep plan that includes an extra hour in bed, a melatonin supplement before bedtime, and bright light after waking. The goal is to see if these changes improve insulin sensitivity and daily energy use.

What this could mean

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

Active substance
melatonin
What this could lead to
If it works, this could point toward a simple, non-drug way to help teens with overweight reduce their risk of diabetes.
What could go wrong
This is a small, early-stage study with only 60 participants, so results may not apply to all teens. The intervention combines several changes, making it hard to know which part helps.

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 60 people

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

Expected to start

Aug 2026

An estimate. Start dates often move.

Expected to finish

Aug 2030

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

14 to 19 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

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. High school students between 14-19 years 2. Overweight/obesity (BMI \>85% for age and sex) 3. Have habitually insufficient sleep, defined as ≤ 7 hours per night on school days 4. Habitually inactive (≤ 3 h of physical activity reported per week) 5. Tanner stage 4 or 5, based on breast development for girls and testicular size for boys. Exclusion Criteria: 1. Reported diagnosis of sleep disorder (e.g., insomnia, obstructive sleep apnea) 2. Medical comorbidities that impact sleep or insulin sensitivity (e.g., diabetes \[based on history or screening HbA1c\]) 3. Regular use of medications affecting sleep or insulin sensitivity (e.g., stimulants, sleep aids, systemic steroids, insulin sensitizers, GLP-1 agonists) 4. IQ\<70 or severe mental illness that may impact sleep or study participation (e.g., schizophrenia), eating disorder, or active suicidal ideation 5. Schedules that would preclude participants from adhering to the sleep schedules (e.g., night-shift employment)

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Conditions

The condition(s) this trial relates to.

Insulin Resistance obesity disorder sleep disorder

As listed by the trial registrant

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

Insulin sensitivity Overweight adolescents Sleep

How to take part

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  1. 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 ↗

  2. A doctor treating you

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