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Does Weight-Loss surgery change how babies grow in the womb?

NCT ID NCT07877233

NEW Knowledge-focused Sponsor: Helse Nord-Trøndelag HF Source: ClinicalTrials.gov ↗

What the study statuses mean

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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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Oct 16, 2026 · Last updated Oct 16, 2026

Summary

Researchers are studying how pregnancy after bariatric surgery affects the nutritional status of mothers and their babies. The study follows pregnant women who had gastric bypass or sleeve gastrectomy and compares them with pregnant women who did not have surgery. Participants give blood and urine samples, answer diet questions, and use a glucose monitor. The team tracks vitamin levels, weight gain, pregnancy complications, and newborn growth to learn whether surgery changes nutritional needs during pregnancy.

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 researchers find that pregnancy after bariatric surgery raises the risk of vitamin deficiencies or complications, the results could shape nutritional guidelines and monitoring for these women. It could also help doctors advise on the best timing for pregnancy after surgery.
What could go wrong
This is an observational study, so it can show links but cannot prove that surgery causes any differences. Findings may not apply to women outside Norway or to those with different surgical histories, and results may reflect other lifestyle or health factors.

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 210 people

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

Started

Dec 2025

Expected to finish

Dec 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.

Who is studied

Nord Trøndelag Hospital Trust Namsos and Levanger Hospital St Olavs University Hospital Møre and Romsdal Hospital Trust, Ålesund Hospital

Ages

18 to 45 years

Sex

Female participants only

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: * pregnant * sufficient understanding of the Norwegian or Scandinavian language * written informed consent Exclusion Criteria: * multiple gestations, * pre-pregnancy BMI \< 18.5 kg/m2 * insulin treated diabetes mellitus * termination of pregnancy before 14 weeks (spontaneously or induced) * anorexia * bullemia

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Conditions

The condition(s) this trial relates to.

Gestational Weight Gain

As listed by the trial registrant

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

Bariatric surgery Pregnancy and delivery Pregnency Reproductive health and childbirth

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    3 sites. 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

  • Namsos Hospital

    RECRUITING

    Namsos, Trøndelag, 7800, Norway

  • St Olavs University Hospital

    RECRUITING

    Trondheim, Trøndelag, 7800, Norway

  • Ålesund Hospital

    RECRUITING

    Ålesund, Møre og Romsdal, Norway

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