Investigating the long-term health effects of obesity treatments on women

MOnitoring NUtritional COnsequences of Obesity Treatment on Women's Health and Transgenerational Effects for Healthier Future Generations: a Multicentre Prospective Observational Cohort Study

Observational Wageningen University and Research · NCT06945016

This study is trying to see how different obesity treatments affect women's health over time, including their nutrition, bones, muscles, and pregnancy outcomes.

Quick facts

Study typeObservational
Enrollment1150 (estimated)
Ages18 Years to 55 Years
SexFemale
SponsorWageningen University and Research Academic / other
Locations1 site (Elst, Gelderland)
Trial IDNCT06945016 on ClinicalTrials.gov

What this trial studies

This observational study aims to explore the long-term impacts of obesity treatments on women's health, focusing on nutritional intake, nutritional status, musculoskeletal health, and reproductive health. Participants, aged 18-55 and approved for obesity treatment, will provide data through questionnaires, blood, urine, and feces samples, and undergo body composition and muscle strength measurements over a period of up to 10 years. The study also includes an integrated birth cohort to assess pregnancy outcomes and child development in women who become pregnant during the follow-up.

Who should consider this trial

Good fit: Ideal candidates are women aged 18-55 with a BMI of 30 kg/m2 or higher who are approved for either surgical or pharmacological obesity treatment.

Not a fit: Patients who are male, under 18 or over 55 years of age, or have a BMI below 30 kg/m2 will not benefit from this study.

Why it matters

Potential benefit: If successful, this study could provide valuable insights into how obesity treatments affect women's health and inform better care strategies.

How similar studies have performed: While there have been studies on obesity treatments, this specific long-term observational approach focusing on women's health outcomes is relatively novel.

Eligibility criteria

Show full inclusion / exclusion criteria
General Inclusion Criteria:

* Female sex at birth
* Aged 18-55 years of age
* Living with obesity (BMI ≥ 30 kg/m2)
* Approved for obesity treatment in one of the participating hospitals:
* Undergoing primary bariatric surgery (RYGB, OAGB or SG)
* Receiving obesity medication (any type) with a BMI ≥30 kg/m2 under medical supervision.
* For those undergoing MRI, DEXA and quantitative ultrasound scan: Willing to be informed about incidental findings of pathology and approving of reporting this to their general physician.

Additional inclusion criteria for birth cohort:

* Being pregnant
* Age 18-45 years of age
* Having received prior obesity treatment, either surgical (RYGB, OAGB, SG) or pharmacological for at least 4 months under medical supervision (any type).

General Exclusion Criteria:

* Male sex at birth
* Aged \<18 or \>55 years of age
* BMI \<30 kg/m2
* Not able to read and/or write in Dutch
* Undergoing a revisional or secondary bariatric procedure (excluding previous gastric banding)
* Malnutrition due to other chronic condition, specifically malignancy, substance abuse
* (mental) condition that makes it impossible to fill out a questionnaire correctly.
* For those undergoing a DEXA scan: height \>196 cm or weight \>160 kg
* For those undergoing a MRI scan: having a contra-indication to MRI scanning including (but not limited to) pacemakers and defibrillators, intraorbital or intraocular metallic fragments, ferromagnetic implans or claustrophobia.

Additional exclusion criteria birth cohort:

* Aged \<18 or \>45 years of age
* \>25 weeks of gestation
* Multiple pregnancy
* Reversal of the bariatric procedure

Where this trial is running

Elst, Gelderland

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Obesity and Obesity-related Medical ConditionsBariatric SurgeryAnti-obesity AgentsBody CompositionMuscle StrengthReproductive HealthMental HealthPregnancy
Last reviewed 2026-06-10 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.