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Eating only between noon and 8 PM may boost health in seniors

NCT ID NCT07314658

Knowledge-focused Sponsor: University of Surrey Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 all meals within an 8-hour window (12 pm to 8 pm) can improve body composition, muscle strength, and metabolic health in adults over 60. Some participants will also take a plant-based protein supplement in the morning or afternoon. The goal is to see if these simple changes can help older adults maintain muscle and health as they age.

What this could mean

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

Active substance
time-restricted eating (16:8 fasting) and plant-based protein supplement
What this could lead to
If successful, this could point toward a simple dietary strategy to help older adults maintain muscle and metabolic health without medication.
What could go wrong
This is a small, early-stage study with only 80 participants, so results may not apply to everyone. The intervention is short (8 weeks), and 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 80 people

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

Expected to start

Dec 2025

An estimate. Start dates often move.

Expected to finish

Jul 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

60 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: * Gender: male and female * Age range: 60 years or older * Fasting for 12 or less hours on a daily basis * BMI range: 23-30 kg/m2 * Weight stability: no more than 3kg weight gain or loss in the past 3 months * Regular eating pattern, i.e. 3 meals a day * Able to prepare the protein supplement Exclusion Criteria: * Any of the following present (in line with exclusion criteria used in previous TRE research in older adults): * known renal impairment * heart attack or stroke in the past three months * continuous use of supplemental oxygen to manage a chronic pulmonary condition or heart failure * rheumatoid arthritis * Parkinson's disease * active treatment for cancer in the past year * insulin dependent diabetes mellitus * taking medications that preclude fasting for 16 h * actively trying or planning to lose weight * history of an eating disorder * outside of stated age or BMI range * fasting for longer than 12 hours on a daily basis * unable to prepare the protein supplement * extreme morning/evening chronotype * sleep disorders * regular meal skipping * history of difficulty having a blood sample taken * Recent exposure to high-dose radiation * Vigorous exercise on more than 3 occasions a week

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As listed by the trial registrant

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

Generally healthy adults over 60 years old

How to take part

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  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

    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 Surrey

    RECRUITING

    Guildford, GU2 7XH, United Kingdom