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Can we predict who will lose weight? new study seeks answers

NCT ID NCT07402031

Knowledge-focused Sponsor: Université Catholique de Louvain 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study is recruiting 100 adults with obesity to find out what factors predict weight loss after taking weight-loss drugs or having bariatric surgery. Researchers will track participants over time, measuring things like eating behaviors, thinking skills, and biological markers. The goal is to better understand why some people lose more weight than others and to help tailor treatments in the future.

What this could mean

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

What this could lead to
If successful, this could help doctors choose the best obesity treatment for each person, improving weight loss results.
What could go wrong
This is an observational study, not a test of a new treatment. It may not find clear predictors, and results may not apply to everyone.

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.

Participants

About 100 people

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

Started

May 2026

Expected to finish

Jan 2036

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.

Who is studied

Participants initiating an anti-obesity medication or candidates for bariatric surgery once its indication has been validated by a multidisciplinary committee, following medical, nutritional and psychological evaluations.

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: * Age between 18 and 65 years * Obesity, with bariatric surgery indicated after a multidisciplinary evaluation in case of surgical treatment. * Good physical and mental health, enabling informed consent. * French speaker Exclusion criteria: * Legal protection * Pregnancy or breastfeeding * History of bariatric surgery (except gastric banding, provided it was removed more than five years ago). * Acute or progressive chronic disease * Alcohol consumption of more than 20 g/day * Inflammatory bowel disease; * Digestive autonomic diabetic neuropathy. * Consumption of dietary supplements (stanols, probiotics, prebiotics or omega-3). * Following a vegan or gluten-free diet or being lactose intolerant. * Fibre consumption \>30 g/day * Recent change in antidiabetic medication within the past 3 months.

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Conditions

The condition(s) this trial relates to.

Obesity obesity disorder Overweight

As listed by the trial registrant

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

Bariatric surgery Obesity & overweight

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

  • Cliniques Universitaires Saint-Luc

    RECRUITING

    Brussels, Brussels Capital, 1200, Belgium

More trials for these conditions

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