Comparing health risks after obesity treatment methods

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

Göteborg University · NCT03152617

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
Enrollment1400 (estimated)
Ages18 Years and up
SexAll
SponsorGöteborg University (other)
Locations1 site (Gothenburg)
Trial IDNCT03152617 on ClinicalTrials.gov

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.

Who should consider this trial

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

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

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

Eligibility criteria

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 this trial is running

Gothenburg

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.

View on ClinicalTrials.gov →

Conditions: Obesity, Morbid, bariatric surgery, gastric bypass, malnutrition, bone disease, oral health

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.