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Sleep more, slash diabetes risk? small study tests the idea.

NCT ID NCT06128265

Disease control Sponsor: University of Chicago 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
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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 26, 2026 · Last updated Jul 02, 2026 · Updated 1 time

Summary

This study looked at whether getting more sleep or keeping a regular bedtime could improve how the body handles sugar and insulin in overweight adults who usually sleep less than 7 hours a night. Eighteen African American men and women aged 21-50 were asked to either extend their time in bed by 2 hours or stick to a consistent bedtime for 24 days. Researchers measured changes in sleep patterns and blood sugar control to see if better sleep could reduce diabetes risk.

What this could mean

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

Active substance
Behavioral intervention: sleep extension or sleep regularity
What this could lead to
If it works, this could point toward a simple, non-drug way to lower diabetes risk in people who are overweight and sleep poorly.
What could go wrong
This is a very small, early study (18 people) with no control group, so results may not apply broadly. The benefits may be modest or not last long-term.

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

18 people

The number who actually took part.

Started

Jan 2024

Finished

Dec 2024

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

21 to 50 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: * African American or Black men and women * Age 21-50 years old * Overweight (BMI greater than or equal 25 kg/m2 and less than 35 kg/m2) * Self-reported short sleep (less than 7hrs/night, sleep between 22:00-08:00, and who indicate they could sleep more if they had the opportunity) * No previously diagnosed sleep disorders (including obstructive sleep apnea (OSA)) * No existing diagnosis of diabetes * No history of endocrine dysfunction * No history of psychiatric, cardiovascular, or eating disorders, not having a gastro-intestinal disease that requires dietary adjustment, * Currently taking no medications (excluding statins and birth control) Exclusion Criteria: * Drug and nicotine use * Habitual alcohol use of more than 2 drinks per day * Caffeine intake of more than 500 mg per day * Subjects who participated in medically managed weight loss program within the past year * Subjects who have undergone bariatric surgery, * Subjects who have dietary restrictions, * Subjects who worked night shifts, or crossed any time zones in the month prior to the study. * Sleep-disordered breathing (apnea-hypopnea index\>15 events/hour) from an overnight at home sleep test (NOX) * Peri- and post-menopausal women will not be included.

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Conditions

The condition(s) this trial relates to.

Obesity obesity disorder Overweight

As listed by the trial registrant

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

Overweight or obesity

Contacts and locations

Locations

  • University of Chicago

    Chicago, Illinois, 60637, United States

More trials for these conditions

Other studies related to the condition(s) this trial covers.