After gastric sleeve patients undergo a substantial weight loss, but the physiological mechanisms behind the weight loss is not fully elucidated. Studies suggest that gut-hormone secretion is altered comparable to what is also seen after Roux-en-Y gastric bypass, however to which extent is not fully established and furthermore, the mechanisms behind an altered secretion are unclear. The purpose of this study is to investigate absorption and postprandial metabolism of glucose and protein in addition to gut hormonal responses after gastric sleeve compared with a group of un-operated subjects machted on sex, age and BMI. Furter, a group of Roux-en-Y gastric bypass operated patients matched on pre-operative BMI, current BMI, sex and age will be included for comparison.
Who can participate
Age range
25 Years – 60 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
SG ang RYGB group:
Inclusion Criteria:
* Uncomplicated RYGB or SG \> 12 month prior to inclusion
* Weight stable (+/- 3 month the last month)
* Written informed consent
Exclusion Criteria:
* Diabetes (HbA1c\>48 or Fasting plasma-glucose\>6.1 mM)
* Pregnancy and/or breastfeeding
* Inadequately treated thyroid disease
* Serious heart or respiratory illness
* Haemoglobin \< 6,5 mM.
Un-operated control group:
Inclusion Criteria:
* Written informed consent
Exclusion Criteria:
* Prior RYGB, SG or complicated upper gastrointestinal surgery
* Diabetes (HbA1c\>48 or Fasting plasma-glucose\>6.1 mM)
* Pregnancy and/or breastfeeding
* Inadequately treated thyroid disease
* Serious heart or respiratory illness
* Haemoglobin \< 6,5 mM.
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.