Observational study on bariatric surgery outcomes

The Bialystok Bariatric Surgery Study

Medical University of Bialystok · NCT04634591

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
Enrollment1000 (estimated)
Ages18 Years and up
SexAll
SponsorMedical University of Bialystok (other)
Locations1 site (Bialystok, Podlaskie Voivodeship)
Trial IDNCT04634591 on ClinicalTrials.gov

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.

Who should consider this trial

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.

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

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

Eligibility criteria

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 this trial is running

Bialystok, Podlaskie Voivodeship

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.

View on ClinicalTrials.gov →

Conditions: Obesity, Diabetes Mellitus, Metabolic Syndrome, Dyslipidemias, PreDiabetes, bariatric surgery, diabetes treatment, prediabetes treatment

Last reviewed 2026-05-15 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.