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Can a simple diet change boost immunity in obesity? new study investigates

NCT ID NCT06899997

Knowledge-focused Sponsor: Assistance Publique - Hôpitaux de Paris 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 how limiting eating to an 8-hour window each day (time-restricted feeding) affects the immune system of women with severe obesity. Researchers will compare two groups of women with obesity—one following the 8-hour eating schedule and one eating normally—and also include a group of lean women for reference. The goal is to understand why obesity weakens the immune system and whether this eating pattern can help improve it.

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 24 people

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

Started

Nov 2025

Expected to finish

Sep 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 64 years

Sex

Female 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: Patients with obesity * Women * Age 18-64 years * Body mass Index between 40-50 kg/m² * Self-reported eating pattern window of more than 14h * Three meal eating pattern * Stable body weight (less than 10% of current body weight during the last 3 months) * Social security affiliation * Written consent * Good understanding of the French language Lean patients * Women * Age 18-64 years * Body mass Index between 18.5-24.9 kg/m² * Self-reported eating pattern window of more than 14h * Social security affiliation * Written consent * Good understanding of the French language Exclusion Criteria: * Diabetes type I or II * Major cardiovascular disease * Pregnancy * Medication that could affect the study outcomes (i.e. anti-inflammatory drugs, antibiotics, immunosuppressors) * Use products intended for weight loss * Night work shift * Past record of malignant tumors * Serious liver dysfunction or chronic kidney disease * Eating disorders * Chronic viral disease (Hepatitis B or C, HIV) or inflammatory systemic diseases (i.e. Crohn's disease, rheumatoid arthritis) * Serious cardiovascular or cerebrovascular disease within 6 months before randomization * Severe gastrointestinal diseases or gastrointestinal surgery in the 12 months before randomization * Under guardianship, curatorship, deprived of liberty * Unable or unwilling to sign the informed consent form. * Patient on AME (state medical aid)

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Conditions

The condition(s) this trial relates to.

Obesity obesity disorder

As listed by the trial registrant

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

Obesity and obesity-related medical conditions

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

  • HEGP - digestive surgery

    ACTIVE_NOT_RECRUITING

    Paris, 75015, France

  • HEGP - nutrition department

    RECRUITING

    Paris, 75015, France

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