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Dinner time hack: could carbs or protein before bed fix your sleep?

NCT ID NCT07339592

Knowledge-focused Sponsor: University of Jordan 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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 eating a high-carb or high-protein dinner 3-4 hours before bed can help medical residents sleep better. 90 participants will be assigned to one of three meal types for two weeks. Sleep quality will be measured using questionnaires and smartwatches, and saliva samples will check for changes in genes linked to the body's internal clock.

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 90 people

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

Started

Dec 2025

Expected to finish

May 2026

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

25 years and older

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: * Currently enrolled and working in Jordanian hospitals. * Not currently following a specific diet or weight-loss program. * Willing to comply with study protocol and intervention meals for two weeks. Provide written informed consent before participation. Exclusion Criteria: * Presence of any chronic medical condition (e.g., diabetes, thyroid disorders, gastrointestinal, cardiovascular, or respiratory diseases). * Diagnosed sleep disorders, such as insomnia, sleep apnea, or restless legs syndrome. * Mental health disorders (stress, anxiety, or depression diagnosed or medicated). * Pregnancy or lactation. * Use of medications or herbal supplements known to affect sleep (e.g., melatonin, chamomile, ashwagandha, lavender). * Caffeine dependence exceeding moderate levels ( \>400 mg caffeine/day).

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Conditions

The condition(s) this trial relates to.

circadian rhythm sleep disorder insomnia

As listed by the trial registrant

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

Circadian rhythm Meal timing Medical residents Nutrition intake Sleep quality

How to take part

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

  1. The places running it

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

  2. The official record

    The full official record for this study. This one lists no contact details, but it is the first place any would appear.

    Open the record ↗

  3. 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

Locations

  • University of Jordan Hospital

    Amman, Jordan

More trials for these conditions

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