Clinical trials
Bariatric Surgery Candidate clinical trials
Below are recruiting bariatric surgery candidate clinical trials, each written for real people, not researchers. We’re tracking 69 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT02390973Recruiting
Bariatric-style surgery vs best diabetes care for long remission
This trial compares surgery plus follow-up care versus the best non-surgical (medical) treatment to help people keep type 2 diabetes in remission for a long time. It may be an option if you have higher body weight and diabetes that’s not well controlled, but safety checks are strict.
Québec, QuebecAges 18–60 - NCT03025074Recruiting
Blood sample bank for liver disease research
This study collects blood samples to build a “biobank” (a stored library of samples) for researchers studying liver diseases like hepatitis, fatty liver disease, and liver cancer. It may help future testing and treatments by allowing scientists to study patterns in people with and without liver conditions.
Buffalo, New YorkAges 7 years+ - NCT04852198Recruiting
Compare two weight-loss surgeries in people with high BMI
This study compares two types of bariatric surgery to see which one works as well as the other for weight loss and health. You may be a candidate if you have a high BMI and specific related health problems, and if certain stomach and digestive issues don’t apply to you.
Almere StadAges 18–65 - NCT05330910Recruiting
Repair of a stomach valve during sleeve weight-loss surgery
This trial tests whether doing a specific repair near the stomach valve (the gastroesophageal junction) during laparoscopic sleeve gastrectomy can help people with a loose valve. It is aimed at adults who have a particular endoscopy finding (Hill grade III) and choose this weight-loss surgery.
SingaporeAges 21–65 - NCT05356000Recruiting
Testing how oxalate is absorbed to help prevent kidney stones
This study looks at how your body absorbs oxalate, a natural chemical that can contribute to calcium kidney stones. If you’ve had calcium stones—especially with high urine oxalate—it may help researchers find ways to reduce future stone risk.
Chicago, IllinoisAges 18–70 - 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 - NCT05602805Recruiting
Study using a health data bank for weight management
This study builds a data bank to help track how people manage overweight or obesity at the hospital. It may help improve care for future patients by learning what treatments and outcomes work best.
Québec, QuebecAges 18 years+ - NCT05650307Recruiting
Heart and metabolic scan study of weight and rehabilitation
This study uses detailed heart scans and information about metabolism (how your body uses energy) to understand how metabolic treatments and heart rehabilitation may affect your health. You may qualify either as someone undergoing bariatric (weight-loss) care or as part of a heart rehabilitation group—or as a healthy comparison group.
Cleveland, OhioAges 18 years+ - 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 - NCT06425016Recruiting
Robot-assisted vs. traditional sleeve gastrectomy
This study compares two types of weight-loss surgery: one done with the help of a robot and the other done by hand (laparoscopic). Both are types of sleeve gastrectomy, where the stomach is reduced in size. If you qualify for sleeve gastrectomy, this trial may help doctors learn which method works better.
Cleveland, OhioAges 18–70 - NCT06511310Recruiting
Exercise, brain health, and weight maintenance after weight loss surgery
This study looks at how exercise affects brain activity and helps people keep weight off after they have regained some weight following bariatric surgery. You may join if you had weight loss surgery, lost weight, and then regained more than 10% of that lost weight within the last 1 to 5 years.
Boston, MassachusettsAges 18–70 - NCT02169518Recruiting
Testing blood fat markers in diabetes and heart health
This study measures how certain blood “fat” markers relate to blood sugar control and inflammation. It may help researchers understand risk factors for heart disease in people with type 1 or type 2 diabetes, pre-diabetes, and people preparing for weight-loss surgery.
Manchester, LancashireAges 20–75 - NCT05408728Enrolling by invitation
Check how sugar absorption predicts weight loss after endoscopy
This study looks at whether a person’s “sugar absorption” pattern can help predict how much weight they will lose. It involves an endoscopy (a look inside the upper digestive tract) as part of routine care, and then matching the results to future weight change.
Jacksonville, FloridaAges 18 years+ - NCT03407833Enrolling by invitation
Study changes in the body after weight, gut, or liver treatment
This study looks at how the body’s insulin-sensitivity (how well your body uses sugar/insulin) and organ function change after certain medical procedures. It may help researchers understand why some people improve after surgery or liver transplant and guide future care.
Nashville, TennesseeAges 18 years+ - NCT07780058Recruiting
Emotional well-being study for weight loss surgery
This study looks at how weight loss surgery affects patients' feelings and mental health over time. It is for people who qualify for certain weight loss procedures and want to understand the psychological effects.
Alcoy, AlicanteAges 18–70 - NCT06696677Recruiting
Measuring small bowel length in repeat weight-loss surgery
This study compares two ways to measure the length of your small intestine during a second weight-loss surgery. One method uses a 3D CT scan before surgery, and the other uses a special tool during surgery. The goal is to see which method is more accurate and safer.
Cairo, Old CairoAges 16–70 - NCT07732738Recruiting
Bariatric surgery plus GLP-1 drug for weight loss and diabetes
This study tests if adding a GLP-1 medication to weight-loss surgery helps people with obesity and related conditions like diabetes. It may improve weight loss and blood sugar control more than surgery alone.
Xingtai, HebeiAges 16–70 - NCT04526743Recruiting
Eating habits and weight changes after weight-loss surgery
This study looks at how eating behaviors change over time after bariatric (weight-loss) surgery. It may help researchers understand why some people lose more weight than others and how to improve support after surgery.
BarcelonaAges 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 - 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 - NCT07633639Recruiting
GLP-1 Medicine After Weight-Loss Surgery in Chinese Patients
This trial tests whether adding a GLP-1 medication (a type of diabetes and weight-loss drug) after weight-loss surgery helps patients with obesity and related health conditions like diabetes. Researchers want to see if combining surgery with this medicine works better than surgery alone.
BeijingAges 18–60
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Common questions
- Are there clinical trials for bariatric surgery candidate?
- Yes. Clin2 currently lists 69 recruiting bariatric surgery candidate 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 candidate 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 candidate 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.