NCT04788836Completed
How Altered Gut-Brain-Axis Influences Food Choices: Part 2 (BrainFood)
How Altered Gut-Brain-Axis Influences Food Choices. (BrainFood) Part 2: Digital Receipts
Source: ClinicalTrials.gov · Last updated 5 Aug 2026
Brief summary (registry, in English)
Obesity is currently one of the most substantial health burdens. Due to the production of marked and sustained weight loss, bariatric surgery is an increasingly used therapeutic modality to combat obesity and its comorbidities. Surgical rearrangement of the gastrointestinal tract remarkably alters metabolism and hormones acting on neurological and hypothalamic signalling, involved in food decision-making and eating behaviour. In this context, many patients who underwent bariatric surgery self-report changes in appetite, satiety and food preferences. Furthermore, new gut hormone-based (e.g. GLP-1 receptor agonist or GLP-1-RA) pharmacotherapies which mimic the effect of bariatric surgery show impressive efficacy on weight reduction by modulation of food behaviour. However, the mechanisms of such functional changes, and how they relate to food decision-making and food purchase behaviour remain unknown. In Part 2 of the BrainFood-project, the investigators propose a novel approach using digital receipts from loyalty card to unravel the effect of obesity treatments (surgical and non-surgical) on eating and food purchase behaviour in daily life.
- Status (registry)
- Completed
- Study type
- Observational
- Enrollment
- 61 (actual)
- First submitted
- 18 Jan 2021
- Start date
- Nov 2021
- Primary completion date
- Dec 2025
- Lead sponsor
- Lia Bally
- Diseases
- Obesity
- NCT number
- NCT04788836
What you commit to
- Study type: Observational
- Participants enrolled: 61
- From Nov 2021 to the primary completion date, Dec 2025
- 1 site in 1 country
- Visits and tests: ask the trial team, the registry does not list them
Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.
Who cannot take part
Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.
Other
- Incapacity to give informed consent
- Primary shopping in other food retailers (e.g. Aldi, Lidl, outside of Switzerland, etc.)
Who the study is looking for
- Female and male subjects aged 18 years or older
- Proficient in German (including written)
- BMI≥30kg/m2 or BMI≥28kg/m2 with adiposity-related comorbidities (prediabetes, type 2 diabetes mellitus, hypertension, dyslipidemia)
- Referred for obesity treatment or who started obesity treatment within 6 months (surgical or non-surgical)
- Primary grocery shopping at the Swiss biggest grocery retailers (Coop, Migros), and regularly using a loyalty card (Cumulus and/or Supercard)
Age in the registry: 18 years to - · Sex: All · Does not accept healthy volunteers
Sites (1)
Sites in registry order. Pick your city on the disease page to sort them by distance.
| Site | City | Country | Site status |
|---|---|---|---|
| Department of Diabetes, Endocrinology, Clinical Nutrition and Metabolism, Inselspital, Bern University Hospital Coordinator of this site? Confirm its status | Bern | Switzerland | Unknown status |
This page is information, not medical advice. Discuss any trial with your doctor.