Clinical trials
Bariatric Surgery (Sleeve Gastrectomy ) clinical trials
Below are recruiting bariatric surgery (sleeve gastrectomy ) clinical trials, each written for real people, not researchers. We’re tracking 105 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT05211375RecruitingPhase 3
Compare two weight-loss surgeries for type 2 diabetes control
This Phase 3 trial compares sleeve gastrectomy versus a different bypass-style operation to improve blood sugar in adults with type 2 diabetes. It may help some people lower blood sugar and diabetes medication needs, but you must meet specific safety and health criteria.
Seongnam-siAges 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 - NCT07813429Recruiting
Neck posture and pain changes after sleeve gastrectomy
This study looks at how weight-loss surgery (sleeve gastrectomy) may affect the position of your neck, how well your neck moves, and any neck pain you might have. You will be followed for a year to see if losing weight helps improve your neck health.
Istanbul, IstanbulAges 18–65 - NCT07747779Recruiting
Comparing two weight-loss surgeries for very high body weight
This study compares two types of weight-loss surgery to see how they affect hormones after a meal. It may help you choose a surgery that improves your health and weight loss.
Pathum Wan, BangkokAges 18–60 - NCT05704348Recruiting
Test to reduce reflux after sleeve stomach surgery
This study looks at whether a treatment plan called “Sleeve-pex” can reduce heartburn and reflux after sleeve gastrectomy. If you’re planning this surgery and can complete symptom questionnaires, you may be able to join and help compare outcomes between groups.
FørdeAges 18 years+ - NCT07637357Recruiting
How anesthesia affects thinking after weight-loss surgery
This study looks at how different types of anesthesia used during sleeve gastrectomy (a weight-loss surgery) may affect your memory and thinking skills after the operation. Researchers want to understand which anesthesia approach is safest for your brain.
Istanbul, SancaktepeAges 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 - 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 - NCT04008563Recruiting
Weight-loss surgery to protect fertility in early womb cancer
This study tests whether bariatric (weight-loss) surgery can help treat certain early, low-grade womb changes while preserving fertility. It’s mainly for people with a higher BMI who want to have children and have an early stage diagnosis confirmed by scans.
Toronto, OntarioAges 18–41 - NCT07293624Enrolling by invitation
Diet and inflammation after weight-loss surgery
This study looks at how your diet affects inflammation and stomach symptoms after weight-loss surgery. You'll fill out food records and have blood tests to see how your eating habits relate to your health.
Istanbul, UskudarAges 18–65 - NCT07286968Recruiting
Digestion Study After Weight-Loss Surgery
This study looks at how digestion works after weight-loss surgery. Volunteers may be people with obesity or those who had gastric bypass or sleeve gastrectomy at least a year ago. The goal is to learn more about gut function after surgery.
LeuvenAges 18–65 - NCT07230769Recruiting
Bougie size effect on stomach sleeve surgery results
This trial compares different bougie sizes during laparoscopic sleeve gastrectomy to see which works best. It's for adults with obesity (BMI 30+ with related health issues or BMI 35+), who have not had prior stomach surgery and have minimal acid reflux.
Alexandria, Alexandria GovernorateAges 18–70 - 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 - NCT07156552Recruiting
Protein and exercise to prevent muscle loss after weight loss surgery
This trial tests whether taking extra protein and doing resistance training helps people keep their muscle mass after bariatric surgery (stomach reduction or gastric bypass). If you're scheduled for this surgery and can follow the program, you may be able to join.
AmsterdamAges 18 years+ - 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 - NCT07137117Recruiting
Phone counseling after sleeve gastrectomy for better health
This study tests whether phone counseling can help you eat better, stay active, and take your medications as prescribed after sleeve gastrectomy weight-loss surgery. If you qualify, you will receive regular calls from a counselor to support your recovery.
Adana, YüreğirAges 18–65 - NCT07104825Recruiting
Nerve block for pain after weight loss surgery
This trial tests if a nerve block can help control pain after gastric bypass or sleeve gastrectomy. The goal is to reduce the need for strong pain medicines and improve recovery.
Evanston, IllinoisAges 18–90 - NCT07093502Recruiting
Predicting outcomes after weight-loss surgery for severe obesity
This study is creating a system to predict how well people do after weight-loss surgery for severe obesity. It focuses on patients getting either a sleeve gastrectomy or a gastric bypass and aims to improve recovery and long-term results.
Changsha, HunanAges 18–50 - NCT06547515Recruiting
Bone and muscle health after sleeve gastrectomy
This study looks at how sleeve gastrectomy surgery affects bone and muscle health in men and women at different life stages (before and after menopause). It compares people having the surgery with those who qualify but don't have it.
QuébecAges 18 years+ - NCT06951893Recruiting
Predicting quality of life after weight-loss surgery
This study looks at whether certain traits before weight-loss surgery can predict how a person's quality of life will change afterward. It aims to find patterns that could help doctors and patients make better decisions about treatment.
Chambéry, SavoieAges 18 years+ - NCT06868992Recruiting
Study of MASH and cell changes in weight-loss surgery
This study looks at a possible link between MASH (liver inflammation with fat buildup) and tiny cell structures that help liver cells work. Researchers want to understand this better in people having weight-loss surgery, where a small liver sample will be taken.
Lyon, FranceAges 18–99 - NCT06783751Recruiting
New surgical method to reduce acid reflux after weight loss surgery
This trial tests a modified version of sleeve gastrectomy that aims to reduce the risk of acid reflux (GERD) after surgery. It is for people aged 18–65 with a BMI between 35 and 55 who already have some degree of GERD and are planning to have weight loss surgery.
Orange, CaliforniaAges 18–65 - NCT06515691Recruiting
Nerve block for pain after weight loss surgery
This study tests a nerve block (an injection near the nerves) to see if it helps reduce pain after laparoscopic sleeve gastrectomy. The block is called a modified thoracoabdominal nerve plane block, and it may lead to better pain control and recovery.
Istanbul, BagcilarAges 18–65 - NCT02823665RecruitingEarly Phase 1
Compare how bariatric surgery affects blood sugar changes
This early trial studies how blood sugar moves in people after certain weight-loss surgery compared with people without surgery. It may help researchers understand why blood sugar can drop too low and how treatments like atropine affect that process.
San Antonio, TexasAges 18–65
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Common questions
- Are there clinical trials for bariatric surgery (sleeve gastrectomy )?
- Yes. Clin2 currently lists 105 recruiting bariatric surgery (sleeve gastrectomy ) 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 (sleeve gastrectomy ) 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 (sleeve gastrectomy ) 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.