Clinical trial Recruiting at 1 site Observational Ages 18 and up

Observational study on bariatric surgery outcomes

Official title: The Bialystok Bariatric Surgery Study

Run by Medical University of Bialystok · NCT04634591 · Data updated 2026-11-12

This study looks at how bariatric surgery affects weight loss and related health issues like diabetes in patients over two years after their surgery.

Quick facts

Study typeObservational
Ages18 Years and up
SexAll
Enrollment1000 (estimated)
SponsorMedical University of Bialystok
Academic / other
Locations1 site (Bialystok, Podlaskie Voivodeship)
StatusRecruiting
StartedSeptember 10, 2015
Main results expectedDecember 31, 2026
Study endsDecember 31, 2026
Registry record updatedApril 14, 2026
Trial IDNCT04634591 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates for this study are individuals with a BMI of 40 or higher, or a BMI of 35 or higher with obesity-related co-morbidities.

Probably not a fit

Patients with substance abuse issues, uncontrolled psychiatric illnesses, or advanced-stage cancer may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

The Bialystok Bariatric Surgery Study is a prospective observational cohort study focusing on patients undergoing bariatric surgery at the Medical University of Bialystok. Participants will undergo a series of baseline tests one month prior to surgery, with follow-up assessments at one, three, six, twelve, and twenty-four months post-surgery. The study aims to evaluate the effects of bariatric surgery on obesity and related conditions such as diabetes and metabolic syndrome.

Why it matters

Potential benefit: If successful, this study could provide valuable insights into the long-term benefits of bariatric surgery for managing obesity and its associated health conditions.

How similar studies have gone: Other studies have shown positive outcomes with bariatric surgery for obesity and related conditions, indicating that this approach is well-supported in the literature.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* BMI ≥ 40 kg/m2, or BMI ≥ 35 and at least one or more obesity-related co-morbidities such as type 2 diabetes (T2D), hypertension, sleep apnea and other respiratory disorders, non-alcoholic fatty liver disease, osteoarthritis, lipid abnormalities, gastrointestinal disorders, or heart disease.
* Inability to achieve a healthy weight loss sustained for a period of time with prior weight loss efforts
* Patient consent for participation in research project
* Willingness in participation in follow-up visits

Exclusion Criteria:

* substance abuse,
* uncontrolled psychiatric illness
* expected lack of compliance
* advanced-stage cancer

Non-obese control group:

* BMI \<30

Where it's running

  • Clinical Research Centre, Medical University of Bialystok
    Bialystok, Podlaskie Voivodeship, Poland
    Recruiting

Similar studies

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 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.