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Teen Weight-Loss surgery: a 10-Year showdown

NCT ID NCT00923819

Disease control Sponsor: Sykehuset i Vestfold HF Source: ClinicalTrials.gov ↗

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
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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 follows 120 teenagers aged 13 to 18 with severe obesity to see if weight-loss surgery (gastric bypass) leads to better health than standard treatments like diet and exercise. Participants are tracked for up to 10 years, measuring weight loss, quality of life, and mental health. The goal is to find out if surgery is a safe and effective option for teens.

What this could mean

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

Active substance
laparoscopic gastric bypass surgery
What this could lead to
If successful, this could show that weight-loss surgery is a safe and effective option for severely obese teenagers, leading to better long-term health and quality of life.
What could go wrong
This is an observational comparison, not a randomized trial, so results may be influenced by patient choice. Surgery carries risks like infection or nutritional deficiencies, and long-term effects in teens are still being studied.

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 120 people

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

Started

Jun 2009

Expected to finish

Dec 2035

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

13 to 18 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: * Between 13 and 18 years of age at inclusion * Tanner stage 4-5 * BMI \> 40 kg/m2 or BMI \> 35 with at least one comorbidity (type 2-diabetes, obstructive sleep apnea, serious hypertension or cerebral pseudotumor) * At least one year multidisciplinary treatment completed Exclusion Criteria: * Tanner stage \< 4 * Substantial risk for lack of compliance * Obesity syndrome (e.g., Prader Willi syndrome) * Obesity related to brain damage * Serious general disease * Monogenic obesity

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Conditions

The condition(s) this trial relates to.

morbid obesity Psychological Well-Being

As listed by the trial registrant

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

Obesity, morbid

Contacts and locations

Locations

  • Morbid Obesity Center, The Hospital of Vestfold, South-Eastern Norway Regional Health Authority

    Tønsberg, 3103, Norway

More trials for these conditions

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