Clinical trials
Bariatric Surgery clinical trials
Below are recruiting bariatric surgery clinical trials, each written for real people, not researchers. We’re tracking 238 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT07436013Recruiting
Comparing two types of weight-loss revision surgery after sleeve gastrectomy
This trial compares two surgical options for people who have regained weight or didn't lose enough after a sleeve gastrectomy. It tests whether adding a ring to the standard revision surgery helps with long-term weight loss.
Alexandria, Alexandria GovernorateAges 18–65 - NCT06806787Recruiting
Can Copeptin and Thirst Predict Weight-Loss Surgery Success?
This study looks at whether levels of a blood marker called copeptin and your sense of thirst can help predict how well bariatric (weight-loss) surgery works. If you are eligible, you will have blood tests and answer questions about thirst before and after surgery.
Bologna, BolognaAges 18–65 - NCT06757296Recruiting
Endoscopic revision of sleeve gastrectomy for reflux or poor weight loss
This study tests a new, less invasive way to convert a sleeve gastrectomy into a different type of weight-loss surgery (SASI) in people who have ongoing gastroesophageal reflux or haven't lost enough weight. The goal is to see if this endoscopic procedure can improve reflux and help with weight loss without the need for a traditional surgery.
SingaporeAges 21–65 - NCT07368842Recruiting
Scalp hair study in severe obesity
This study looks at chemicals in scalp hair from people with severe obesity to learn more about the condition. Participants must be planning to have weight-loss surgery.
SingaporeAges 21–70 - NCT07350967Recruiting
Magnetic weight-loss procedure for diabetes or weight regain
This trial tests a new procedure that uses magnets to reroute part of your small intestine. It is for people with type 2 diabetes or who have had a sleeve gastrectomy and gained weight back. The goal is to see if this magnetic treatment can help with weight loss and diabetes control.
Ahmedabad, GujaratAges 25–65 - NCT07336862RecruitingPhase 1/Phase 2
Weight loss surgery plus GLP-1 drug for obesity and diabetes
This trial tests whether adding a GLP-1 receptor agonist (a medication that helps control blood sugar and appetite) after weight loss surgery improves outcomes for people with severe obesity and related health problems like type 2 diabetes.
BeijingAges 18–60 - NCT07327905Recruiting
Lidocaine or dexmedetomidine for pain during weight-loss surgery
This trial compares two medicines given through an IV during sleeve gastrectomy (weight-loss surgery) to see which provides better pain control. It may help patients have a smoother recovery with less discomfort.
AlexandriaAges 20–50 - NCT07326865Recruiting
Sugar metabolism study in obese patients with and without MASLD
This study looks at how the liver responds to sugar given through a vein in obese patients with and without a fatty liver condition called MASLD. It may help doctors understand why some people develop liver problems from sugar and fat.
Amsterdam, North HollandAges 35–65 - NCT05966727Recruiting
Cholestyramine to lower stored pollutants in obese women
This study tests whether cholestyramine can lower blood levels of certain stored environmental pollutants (“POPs”) in women preparing for weight-loss surgery. If it works, it may help reduce pollutant levels that can build up in the body over time.
Nice, Alpes-MritimesAges 18–45 - NCT02902198Recruiting
Study of taste changes before and after bariatric surgery
This study looks at how your sense of taste works before and after bariatric weight-loss surgery. It may help doctors understand why eating patterns change after surgery.
BaselAges 18–55 - NCT07236788Recruiting
Iron infusion to prevent anemia and improve life in obese patients
This trial tests whether giving an intravenous iron supplement (ferric derisomaltose) can help prevent anemia and improve quality of life in obese patients who have low iron stores. It aims to see if this treatment can boost energy and reduce fatigue.
BeijingAges 18–65 - NCT07212868RecruitingPhase 1
How glucagon affects blood sugar after weight loss surgery
This study looks at how the hormone glucagon affects blood sugar in people who have had gastric bypass or sleeve gastrectomy surgery more than a year ago, compared to people who have not had any gastrointestinal surgery. It aims to understand glucose metabolism better and may help improve care for people after bariatric surgery.
San Antonio, TexasAges 18–65 - NCT07207772Recruiting
Electric lung imaging vs. standard breathing support in weight-loss surgery
This study compares two ways of setting the breathing machine during weight-loss surgery: one guided by electrical impedance tomography (EIT) and the other by standard care. The goal is to see which one helps your lungs work better during and after surgery.
Jinan, ShandongAges 18–65 - NCT01984762Recruiting
Weight-loss surgery for type 2 diabetes
This study tests whether two weight-loss operations (sleeve gastrectomy or Roux-en-Y gastric bypass) can improve type 2 diabetes. It may help people with higher body weight and diabetes control, but it also requires meeting safety and health criteria.
GothenburgAges 18–60 - NCT07158008Recruiting
Weight loss surgery for people with obesity and heartburn
This study compares two weight-loss surgeries for people who have both obesity and severe heartburn or GERD. One surgery combines part of the stomach removal with an anti-reflux wrap, while the other reroutes the stomach to help with weight loss and reflux.
KrakowAges 18–65 - NCT05404061Recruiting
Study for people who don’t lose weight after bariatric surgery
This study looks at people who have had bariatric surgery but still struggle to lose weight (or lose it poorly). It aims to better understand how to help “poor responders” and what might be interfering with weight-loss results.
LondonAges 18–70 - NCT07119437Recruiting
Low-impact laparoscopy for weight loss surgery
This trial compares a newer, less invasive laparoscopic technique to the standard method for sleeve gastrectomy, a type of weight-loss surgery. It aims to see if the low-impact approach reduces pain and speeds recovery.
Rome, ItalyAges 18–65 - NCT06934681Recruiting
Exercise Program to Help Fight Obesity
This study tests whether a structured exercise program can help people with severe obesity lose weight and improve health. You will be asked to follow a supervised exercise routine to see if it helps you achieve your weight loss goals.
Valencia, ValenciaAges 18–65 - NCT02904291Recruiting
Blood-pressure medicine study around weight-loss surgery
This study checks how amlodipine (a blood-pressure medicine) gets absorbed in your body before and after gastric bypass or sleeve gastrectomy. It may help doctors better manage blood pressure medicines after weight-loss surgery.
TrondheimAges 18–70 - NCT05816798RecruitingPhase 2/Phase 3
Laser treatment to reduce chronic knee pain before weight-surgery
This trial tests whether photobiomodulation (a type of laser/light therapy) can reduce chronic pain in both knees for people preparing for bariatric (weight-loss) surgery. If you have knee pain that limits daily life, the treatment may help you feel better while you’re in the pre-surgery rehabilitation period.
Goiânia, GoiásAges 18–70 - NCT06945016Recruiting
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Elst, GelderlandAges 18–55 - NCT06934655RecruitingPhase 3
Starting semaglutide again after weight-loss surgery in teens
This trial tests if restarting semaglutide (a weekly injection for weight loss) soon after sleeve gastrectomy helps teens with severe obesity keep losing weight. It is for patients who were already taking semaglutide before their surgery.
Los Angeles, CaliforniaAges 12–18 - NCT06896682Recruiting
Cortisol and weight regain after weight-loss surgery study
This study looks at how cortisol affects blood sugar drops after weight-loss surgery. It may help explain links between cortisol, obesity, and low blood sugar episodes.
EsbjergAges Any age - NCT06858761Recruiting
Robot-assisted weight loss surgery: cost and results study
This study looks at whether using a robot during weight loss surgery is worth the cost. It compares outcomes for people having their first bariatric surgery or a repeat surgery for complications.
BordeauxAges 18–70
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Common questions
- Are there clinical trials for bariatric surgery?
- Yes. Clin2 currently lists 238 recruiting bariatric surgery studies from the U.S. registry, each rewritten for real people, not researchers, so you can see what it’s testing and who it’s for.
- How do I know if I qualify for a bariatric surgery trial?
- Each study lists its eligibility criteria — rules about age, diagnosis, and prior treatments. On every Clin2 trial page we explain these in words written for real people and offer a short, optional pre-screen for a fit read. The study team makes the final decision.
- Does it cost anything to join a bariatric surgery trial?
- Using Clin2 is always free. Many trials cover the cost of the study treatment and related visits; some reimburse travel. The study team explains exactly what’s covered before you decide.
Related conditions
Clin2 helps you find and understand clinical trials and does not provide medical advice. Study data comes from ClinicalTrials.gov. Talk with your doctor about whether a specific trial is right for you.