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Can eating all meals in 6 hours curb appetite? small study investigates

NCT ID NCT07500792

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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 24, 2026 · Last updated Jun 27, 2026 · Updated 2 times

Summary

This study looks at whether eating all meals within a 6-hour window (early time-restricted eating) changes appetite and hunger-related hormones compared to eating over 12 hours. Twelve healthy men without obesity will try both eating patterns on separate days. Researchers will measure hormone levels and how much they eat afterward to see if meal timing affects appetite.

What this could mean

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

Active substance
early Time-Restricted Eating (eTRE)
What this could lead to
If successful, this could provide insights into how meal timing affects appetite and energy balance, potentially informing future dietary guidelines.
What could go wrong
This is a very small, early-stage study in healthy men only, so results may not apply to women or people with health conditions. The intervention lasts just one day, so long-term effects are unknown.

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 12 people

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

Expected to start

May 2026

An estimate. Start dates often move.

Expected to finish

Nov 2027

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 65 years

Sex

Male participants only

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: * Males aged 18 years or older. * BMI between 18.5 and 24.9 kg/m² * Have stable body mass for at least three months (within ±2 kg). Exclusion Criteria: * Females * People who are younger than 18 or older than 65 years old. * Following a special diet (e.g. weight loss, vegetarian or vegan, etc.). * Have food allergies related to the study. * Smoking. * Taking any medications. * Suffering from metabolic health issues, e.g., history of diabetes, cardiovascular disease, or eating disorders.

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As listed by the trial registrant

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

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

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

    Open the record ↗

  3. A doctor treating you

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Contacts and locations

Locations

  • New Lister Building at Glasgow Royal Infirmary Glasgow, United Kingdom G31 2ER

    Glasgow, G31 2ER, United Kingdom

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