Direct Measurement of Ingestive Behaviour in Relation to Sex Differences and Gastrointestinal Hormone Levels in Patients After Metabolic and Bariatric Surgery
Recruiting now
Conditions studied: Obesity
In brief
Bariatric surgery (BS), especially procedures like Sleeve Gastrectomy (SG) and Roux-en-Y gastric bypass (RYGB), is the most effective treatment for obesity. Yet, the exact mechanisms governing its effect are somewhat elusive, with current research mainly focusing on post-operative food intake outcomes based on self-reported data, which might not fully capture the nuanced changes in eating behaviours. To address these gaps, our study plans to employ the newly developed "drinkometer", a device capable of analysing the intricate changes in drinking behaviour following BS. This tool promises to bring a more detailed perspective to the changes in ingestive behaviours, bypassing the inaccuracies of self-reporting methods. By expanding our research to encompass diverse patient demographics and examining potential links to physiological shifts like gut hormone level alterations, the study aims to provide a more rounded understanding of the long-term impacts of BS on eating behaviours.
Key facts
- Study ID
- NCT06538948
- Run by
- University of Zurich
- People needed
- 420
- Starts
- 2024-02-13
- Expected to finish
- 2027-12-31
- Last updated by the study team
- 2026-05-18
Who can join
Age: 18 and older. Sex: any. Healthy volunteers: accepted.
You may qualify if…
- Age ≥ 18 year
- BMI ≥ 35 kg/m2 for patients with planned RYGB or SG operation
- BMI ≥ 30 kg/m2 for external controls affected by obesity but no planned RYGB or SG within the next 12 months, and
- BMI ≥ 18.5 kg/m2 and ≤ 24.9 kg/m2 for controls without obesity.
You may not qualify if…
- history of previous bariatric operations and/ or revisional surgery (e.g., alteration of limb lengths after primary RYGB),
- smoking,
- established diagnosis of type 1 or 2 diabetes mellitus, and
- polycystic ovary syndrome (PCOS).
Where it is running
- Hospital Männedorf — Männedorf, Canton of Zurich, Switzerland (enrolling)
- University Hospital Zurich, Department of Surgery and Transplantation — Zurich, Canton of Zurich, Switzerland (enrolling)
Full record on ClinicalTrials.gov
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