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Sleep your way to better blood sugar: study tests personalized sleep extension to prevent diabetes

NCT ID NCT03398902

Prevention Sponsor: New York University 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 25, 2026 · Last updated Jun 26, 2026 · Updated 1 time

Summary

This study tested whether helping people with pre-diabetes get more sleep could improve their blood sugar control and lower their risk of developing type 2 diabetes. Researchers worked with 150 adults who slept less than 6.5 hours per night, giving some a personalized sleep extension plan and others their usual sleep schedule. Over 8 weeks, they tracked blood sugar levels and sleep patterns to see if more sleep made a difference.

What this could mean

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

Active substance
Sleep extension (behavioral intervention based on CBTI principles)
What this could lead to
If successful, this approach could offer a simple, drug-free way to improve blood sugar control and reduce the risk of developing type 2 diabetes in people with pre-diabetes.
What could go wrong
This is a small, early-stage study (150 participants) testing a behavioral change, which can be hard to maintain long-term. Results may not apply to everyone, and the effect on preventing diabetes is not yet proven.

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

393 people

The number who actually took part.

Started

Mar 2021

Finished

Sep 2023

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 64 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: * Glycated hemoglobin (Hemoglobin A1C) greater than or equal to 5.7% and less than 6.5%. * Restricted sleep defined as less than 6.5 hours average work day sleep (actigraphy confirmed). Exclusion Criteria: * type 2 diabetes (Hemoglobin A1C greater than or equal to 6.5%) * pregnancy or lactation (self-report) * hemophilia (self-report) * moderate/severe or severe depression (PHRQ greater than or equal to 15)) * alcohol abuse/dependence (Alcohol Use Disorders Identification Test greater than or equal to 10). * sleep promoting medications (self-report) * hypoglycemic agents (except metformin) (self-report) --current chemotherapy treatments (self-report) * Shift work during the past 2 months or planned during intervention period (self-report). * Trans-meridian travel in the past 4 weeks or planned during intervention period (self-report).

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Conditions

The condition(s) this trial relates to.

prediabetes syndrome type 2 diabetes mellitus prevention target

As listed by the trial registrant

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

Prediabetes

Contacts and locations

Locations

  • NYU Langone

    New York, New York, 10010, United States

More trials for these conditions

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