Clinical trial Recruiting at 1 site Observational Ages 18 and up

Comparing health risks after obesity treatment methods

Official title: BASUN - Risks for Malnutrition, Metabolic Bone Disease and Impaired Oral Health After Obesity Treatment - Interaction With Gastrointestinal Microbiota, Psychiatric Morbidity and Socioeconomics

Run by Göteborg University · NCT03152617 · Data updated 2026-11-12

This study looks at the health risks of malnutrition, bone disease, and oral health problems in people who have had obesity surgery compared to those treated with regular methods over ten years.

Quick facts

Study typeObservational
Ages18 Years and up
SexAll
Enrollment1400 (estimated)
SponsorGöteborg University
Academic / other
Locations1 site (Gothenburg)
StatusRecruiting
StartedApril 2015
Main results expectedApril 2027
Study endsDecember 2027
Registry record updatedApril 23, 2025
Trial IDNCT03152617 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are individuals eligible for obesity treatment under specialist care, whether through surgery or medical methods.

Probably not a fit

Patients who cannot speak, read, or write in Swedish may not benefit from this study due to communication barriers.

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

What this trial studies

The BASUN study is a long-term observational study that compares the health outcomes of 1000 individuals who underwent obesity surgery with 400 individuals treated through conventional methods. It aims to identify the risks of malnutrition, metabolic bone disease, and impaired oral health associated with these treatments over a 10-year period. Participants are followed through detailed checkups and assessments, including nutritional status, bone health, and oral health, using various methods such as interviews, blood tests, and dental examinations. The study seeks to provide insights that could lead to more personalized medical guidelines for obesity treatment.

Why it matters

Potential benefit: If successful, this study could lead to improved management and prevention of complications associated with obesity treatments.

How similar studies have gone: While there have been studies on obesity surgery, the comprehensive long-term comparison of health risks in this manner is relatively novel.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* All patients eligible for obesity treatment under specialist care with medical methods or with surgery

Exclusion Criteria:

* no ability to speak, read or write in Swedish

Where it's running

  • Department of Gastrosurgical R & E, the Sahlgrenska Academy,University of Gothenburg
    Gothenburg, Sweden
    Recruiting

Study contacts

  • Principal investigator: Lars Fandriks, M.D., PhD. — Institute of Clinical Sciences, the Sahlgrenska Academy, University of Gothenburg
  • Study coordinator: Lars Fandriks, M.D., PhD.
  • Email: lars.fandriks@gastro.gu.se
  • Phone: +46313424123

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

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.