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Eat only between 8 AM and 4 PM: could this simple change improve asthma?

NCT ID NCT07345572

Knowledge-focused Sponsor: De Montfort University 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 24, 2026 · Last updated Aug 14, 2026 · Updated 4 times

Summary

This study looks at whether eating all your meals between 8 AM and 4 PM (early time-restricted eating) can improve health and quality of life. Researchers will compare results in 36 adults—some with mild, well-controlled asthma and some without asthma. Participants eat their normal food, just within a shorter daily window, for one week.

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 it works, this could point toward a simple dietary timing strategy to improve lung function and quality of life in people with mild asthma.
What could go wrong
This is a very small, early-stage study (36 participants) testing only a one-week diet change. Results may not apply to people with moderate or severe asthma, and the short duration limits what can be concluded.

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 36 people

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

Started

Feb 2026

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

18 to 65 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: * Adults between 18 and 65 years old. * Non asthma group: individuals without asthma * Asthma group: Have already been diagnosed with controlled mild asthma. * Not following any diet regimen. * Able to read the information pack and give consent in English. Exclusion Criteria: * Moderate to severe asthma * Pregnant * Smoking * Systemic corticosteroids. * History of recent respiratory disease, current chest infection, and collapsed lung. * History of recent surgery (last 2 months), including thoracic, abdominal, and eye surgery. * Being diagnosed with cardiovascular diseases, e.g., unstable angina, a heart attack, uncontrolled high blood pressure, stroke, and aneurysm. * Broken ribs or neck vertebrae. * Cancer. * History of autoimmune diseases * Being diagnosed with an eating disorder. * Overnight shift work

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Conditions

The condition(s) this trial relates to.

asthma Intermittent Fasting

As listed by the trial registrant

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

Asthma management Time-restricted eating

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

    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

  • Health and Life Science

    RECRUITING

    Leicester, England, United Kingdom

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