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Taking people in PolandNo phase

Follows adults with obesity before and after weight-loss surgery

Follows adults with obesity or diabetes through weight-loss surgery with repeated checkups.

Plain-language title generated from the registry record
Registry title: The Bialystok Bariatric Surgery Study

Key facts

Where
Bialystok, PolandSee the site

Where in Poland

  • Clinical Research Centre, Medical University of BialystokBialystok, PolandTaking people

Questions to ask the study team

  1. How often do I need to come in, and for how long each time?
  2. Are travel costs paid?
  3. Can I keep my own doctor?
  4. What happens if I want to stop?
Print a page for my doctor

Trial details

Who runs it
Medical University of Bialystok
Trial code
NCT04634591
Record updated
14 April 2026
Original description
The Bialystok Bariatric Surgery Study (BBSS) is a prospective observational cohort study of patients undergoing bariatric surgery at the First Clinical Department of General and Endocrine Surgery at the Medical University of Bialystok. The BBSS consists of a battery of baseline tests established one month prior to the surgery and repeated at one, three, six, twelve and twenty four-month follow-up clinical visits.Read full original descriptionShow less

The Bialystok Bariatric Surgery Study

The Bialystok Bariatric Surgery Study (BBSS) is a prospective observational cohort study of patients undergoing bariatric surgery at the First Clinical Department of General and Endocrine Surgery at the Medical University of Bialystok. The BBSS consists of a battery of baseline tests established one month prior to the surgery and repeated at one, three, six, twelve and twenty four-month follow-up clinical visits.

Inclusion: 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: uncontrolled psychiatric illness; advanced-stage cancer; Non-obese control group:; substance abuse,; expected lack of compliance; BMI <30.

ClinicalTrials.gov NCT04634591