Clinical trials
Bariatric Surgery clinical trials
Below are recruiting bariatric surgery clinical trials, each written for real people, not researchers. We’re tracking 243 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- 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 - 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 - NCT07316179Recruiting
Predicting breathing tube placement in weight-loss surgery
This study compares two methods—a standard risk score (El Ganzouri index) and an ultrasound exam—to predict how easy it will be to place a breathing tube during weight-loss surgery. The goal is to find the best way to keep patients safe during anesthesia.
Antalya, AntalyaAges 18–65 - 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 - 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 - 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 - 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 - NCT01803451RecruitingEarly Phase 1
Tested after gastric bypass for low blood sugar
This early study looks at a gut hormone–based treatment (GLP-1) and how it affects blood sugar and digestion after gastric bypass. It may help people who are having repeated low blood sugar episodes after surgery.
San Antonio, TexasAges 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 - 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 - NCT02811900Recruiting
Study of outcomes after weight-loss (bariatric) surgery
This study follows adults who have bariatric (weight-loss) surgery to see what outcomes they experience afterward. It may help doctors better understand how well the surgery works in real life.
StrasbourgAges 18 years+ - 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 - 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 - NCT03296605Enrolling by invitation
Study of obesity treatment after bariatric or belly surgery
This trial looks at obesity care in people who have already had bariatric (weight-loss) surgery or certain abdominal surgery. It may help researchers understand what treatments or follow-up care could work best for you after surgery.
Nanjing, JiangsuAges 18–75 - NCT01055054Enrolling by invitation
Bariatric surgery registry for people with severe weight gain
This study is a registry, meaning it collects health information to better understand outcomes after bariatric (weight-loss) surgery. It may help doctors improve care for people with severe obesity who had surgery at VCU Medical Center.
Richmond, VirginiaAges 12–75 - NCT07446972Recruiting
Bariatric surgery and female sexual health study
This study looks at how weight-loss surgery (bariatric surgery) affects a woman's sexual function and hormone levels. It follows women who are already scheduled for surgery to see if their sexual health changes after the procedure.
Cairo, Al-Manial CairoAges 18–45 - NCT07448896Recruiting
Studying immune cells in stomach tissue after weight loss surgery
This study looks at how certain immune cells (mast cells and macrophages) and small blood vessels change in the stomach tissue of people who have weight loss surgery. It may help researchers better understand how the body responds to surgery and weight loss.
Alexandria, Alexandria GovernorateAges Any age - NCT07565051Recruiting
Predicting weight loss after gastric bypass surgery
This study looks at whether measuring muscle mass before gastric bypass surgery can predict how much weight you'll lose afterward. Understanding this connection may help doctors better prepare patients for surgery and set realistic goals.
Geneva, Canton of GenevaAges Any age - 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 - NCT07663942Recruiting
Reducing sitting time and boosting fitness before and after weight-loss surgery
This study tests a program to help women reduce sitting time and increase physical fitness before and after bariatric surgery (like gastric bypass or sleeve gastrectomy). It aims to improve long-term health outcomes.
Santa Maria da FeiraAges 18 years+ - NCT07666074Recruiting
AI for predicting difficult airway in weight-loss surgery
This trial uses artificial intelligence (AI) to predict whether it will be difficult to place a breathing tube during weight-loss surgery. The goal is to help doctors plan safer anesthesia for patients with a high BMI.
Elâzığ, ElâzığAges 18–65 - NCT07578597Enrolling by invitation
Pregnancy and Baby Health After Weight-Loss Surgery
This study compares how pregnancy and newborn health differ between women who had weight-loss surgery (gastric bypass or sleeve gastrectomy) and women who didn't. Researchers follow both mother and baby to understand potential risks and benefits.
OdenseAges 18 years+ - NCT05576116Enrolling by invitation
Bariatric surgery plus pancreas transplant after kidney transplant
This trial studies whether adding bariatric (weight-loss) surgery and a pancreas transplant can improve health in people with long-term type 2 diabetes who already received a kidney transplant. It may help with blood sugar control and related metabolic health, while also needing careful safety screening for kidney function and blood vessel health.
Toronto, OntarioAges 18–50 - 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+
Hear when a new Bariatric Surgery trial opens
We’ll email you when one opens — at most once a week, no account needed, unsubscribe anytime.
Common questions
- Are there clinical trials for bariatric surgery?
- Yes. Clin2 currently lists 243 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.