Clinical trials
Bariatric Surgery Patients clinical trials
Below are recruiting bariatric surgery patients clinical trials, each written for real people, not researchers. We’re tracking 157 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT03535142Recruiting
Fatty liver in people considering bariatric surgery
This study looks at how fatty liver disease may predict future liver health in people with severe weight gain. It compares people who are planning bariatric (weight-loss) surgery with similar people who are not, to better understand who may be at higher risk.
EsbjergAges 18 years+ - NCT06222151Recruiting
Recovering from weight-loss surgery with early walking
This study tests whether starting a supervised walking program soon after weight-loss surgery helps you recover faster. It aims to see if early movement improves your recovery and hospital stay.
Esbjerg, Region SyddanmarkAges 18–70 - NCT06065124Recruiting
Study on weight loss surgery for heart failure with irregular heartbeat
This trial tests if weight loss surgery can help people with heart failure and atrial fibrillation (an irregular heartbeat) improve their heart condition. You may join if you are between 45 and 70, have a BMI of 32 to 40, and have mild to moderate heart failure with preserved pumping function.
Arnhem, GelderlandAges 45–70 - NCT06575738RecruitingPhase 1
Semaglutide for teens after weight-loss surgery
This study looks at how teenagers and young adults respond to weight-loss surgery (sleeve gastrectomy) and whether adding a medication called semaglutide can help improve weight loss. It has two parts: first observing how surgery affects you, then testing if semaglutide helps those who didn't lose enough weight after surgery.
Aurora, ColoradoAges 12–24 - NCT07063979Recruiting
Using a nerve-stimulation band to reduce nausea after weight-loss surgery
This trial tests if adding a small nerve-stimulation device (Reliefband) to standard recovery care can help prevent nausea and vomiting in the first 24 hours after robotic sleeve gastrectomy. If you are having this surgery and match the criteria, you may be able to join.
Plainsboro, New JerseyAges 18–75 - NCT06372015Recruiting
Diet program vs bariatric surgery for liver health
This study compares two ways to help people with obesity and liver problems: a special diet program or weight-loss surgery. Researchers will look at changes in fats, immune system, and genetic markers to see which approach works better.
Castellana Grotte, BariAges 18 years+ - NCT04494048Recruiting
Registry for people considering endoscopic weight-loss procedures
This study keeps a record of people who are planning or recently had an endoscopic (camera-based) weight-loss procedure. The goal is to learn how these procedures work in real life and help doctors improve care.
New York, New YorkAges 18–89 - NCT03467581Recruiting
Five-year follow-up after laparoscopic stomach sleeve surgery
This study looks at how people do over the next five years after getting laparoscopic (keyhole) gastric sleeve surgery for obesity. It may help doctors understand long-term outcomes and benefits for future patients.
TartuAges 18–65 - 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 - 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 - 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 - 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 - NCT04851470Recruiting
Dental gum check in adults with obesity
This study looks at gum health in adults with obesity. It may help researchers understand how weight and related health factors affect periodontal (gum) status and what to monitor in bariatric care populations.
LondonAges 18 years+ - 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 - NCT04942093Recruiting
High-protein low-calorie diet before weight-loss surgery
This trial studies whether a higher-protein, lower-calorie diet before sleeve gastrectomy (a type of weight-loss surgery) changes outcomes after surgery. You may be able to join if you’re scheduled for the operation and meet specific health and safety requirements.
DieppeAges 18–65 - NCT06168162Recruiting
Personalized breathing support during weight-loss surgery
This trial tests whether a personalized breathing setting during surgery can lower the risk of lung complications after weight-loss surgery. If you have a high risk of lung issues, you may be eligible.
Cairo, Cairo GovernorateAges 16 years+ - 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 - NCT07021170RecruitingPhase 4
Study comparing special vs. standard vitamins after weight-loss surgery
This study tests whether a special brand of bariatric vitamins works better than standard multivitamins for people who have had weight-loss surgery. It aims to find the best way to prevent vitamin deficiencies after surgery.
Alexandria, Alexandria GovernorateAges 18–65 - NCT07273955Recruiting
Alcohol use and weight-loss surgery: a study of addiction follow-up
This study looks at how alcohol use disorder changes after weight-loss surgery. Researchers want to understand the link between eating disorders, alcohol problems, and addiction treatment before and after surgery.
StrasbourgAges 18 years+ - NCT05608772Recruiting
Revision weight-loss surgery after failed sleeve
This study looks at which revision surgery works best after a prior sleeve stomach operation that didn’t last. It tests switching to one of three procedures to help with weight regain, and it excludes more severe acid reflux cases.
Alexandria, Alexandria GovernorateAges 18–60 - NCT07021248RecruitingPhase 4
Bariatric supplements after weight loss surgery
This study tests whether taking special supplements after weight loss surgery can help keep your vitamin levels healthy and avoid too much vitamin B6. If you are having your first weight loss surgery, you can join—as long as you are not pregnant, not allergic to B6, and meet the weight and health requirements.
Alexandria, EgyptAges 18–65 - NCT04639778Recruiting
Using a connected scale to track weight after bariatric surgery
This study tests whether a connected scale can help monitor your weight over time after gastric bypass or sleeve surgery. It may help your care team spot changes earlier, by sending weight information from your home.
Boulogne-sur-MerAges 18 years+ - 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 - 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
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Common questions
- Are there clinical trials for bariatric surgery patients?
- Yes. Clin2 currently lists 157 recruiting bariatric surgery patients 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 patients 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 patients 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.