Clinical trials
Bariatric Surgery clinical trials
Below are recruiting bariatric surgery clinical trials, each written for real people, not researchers. We’re tracking 244 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT06850493Recruiting
Ketogenic Diet Before Weight-Loss Surgery
This study tests whether following a ketogenic diet (a low-carb, high-fat eating plan) before weight loss surgery can improve your health and recovery. You will be asked to follow the diet for a few weeks before your scheduled Roux-en-Y gastric bypass.
Veldhoven, North BrabantAges 18–65 - 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+ - 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 - 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 - 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+ - NCT07180316Recruiting
Comparing robotic vs. laparoscopic surgery for weight loss revision
This trial compares two types of surgery (robotic and laparoscopic) to see which leads to fewer problems after a second weight-loss operation. It is for people who need to revise their first bariatric surgery to a Roux-en-Y gastric bypass.
LyonAges 18–70 - 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 - NCT02857179Recruiting
Study of Bariatric Surgery
This study is looking at people who have already had bariatric (weight-loss) surgery. If you’ve had that surgery and are within the age range, you may be eligible to participate.
LyonAges 16–80 - NCT02310178Recruiting
Long-term follow-up after bariatric surgery at Montpellier
This study follows people who have had weight-loss surgery at Montpellier University Hospital to see how they do over time. It helps doctors understand the long-term benefits and challenges after surgery.
MontpellierAges 15 years+ - NCT07672821Recruiting
Time-restricted eating after weight-loss surgery
This study tests if time-restricted eating (eating only during a set window of hours each day) helps people who have had weight-loss surgery but either didn't lose enough weight or regained weight after surgery. It also includes people with obesity who haven't had surgery.
Bursa, Lütfen Seçiniz.Ages 18–65 - NCT07539623RecruitingPhase 3
Pain relief with suzetrigine after heart or weight-loss surgery
This study tests whether suzetrigine, a new pain medication, can reduce the need for opioids (strong painkillers) after cardiac or bariatric surgery. The goal is to help patients manage pain with fewer opioid-related side effects.
New York, New YorkAges 18–85 - NCT07569705Recruiting
Nerve Stimulation to Help Breathing After Weight-Loss Surgery
This trial tests whether electrical nerve stimulation (a non-invasive, pain-relieving technique) can help improve breathing problems that sometimes occur after weight-loss surgery. The study measures how well your diaphragm—the muscle that helps you breathe—works after the procedure.
CairoAges 20–60 - NCT07515391Enrolling by invitationPhase 2
Blood Sugar Control After Weight-Loss Surgery
This trial tests whether a diabetes medication called dapagliflozin helps smooth out blood sugar swings after bariatric (weight-loss) surgery. It may help people with type 2 diabetes achieve better control after their surgery.
Kuwait City, DasmanAges 21–70 - NCT05215886Enrolling by invitation
Bariatric surgery and memory problems in people with obesity
This study looks at how bariatric (weight-loss) surgery may affect memory and thinking in people with obesity who already have memory decline or dementia. It may help doctors understand which patients benefit most and what changes to expect.
Sacramento, CaliforniaAges 18–75 - NCT06198790Recruiting
Anemia after weight loss surgery
This study looks at how common anemia is after weight loss surgery. It follows people who have sleeve gastrectomy or gastric bypass to see if they develop anemia.
BeijingAges 16–70 - NCT06538948Recruiting
Eating behavior after weight loss surgery
This study measures how people eat and how their gut hormones change after weight loss surgery. It compares different groups to understand differences between men and women.
Männedorf, Canton of ZurichAges 18 years+ - NCT06617689Recruiting
Education on drinking and oral health after weight loss surgery
This study tests whether a patient education program can help people having weight loss surgery improve their drinking habits and oral hygiene.
TrondheimAges 18 years+ - NCT06738004Recruiting
Emergency bariatric surgery national audit
This trial is collecting information about people who have emergency complications after weight loss (bariatric) surgery. It aims to understand how these emergencies are managed and how care can be improved.
LutonAges 18 years+ - NCT06795386Recruiting
Widespread pain after rapid weight loss in Black and Hispanic adults
This study looks at whether rapid weight loss from bariatric surgery leads to long-term widespread pain in Black and Hispanic adults. The goal is to understand how weight loss affects pain and find better ways to help people manage it.
New York, New YorkAges 18–75 - NCT06915558Recruiting
Reducing inflammation in weight loss surgery
This trial tests a method to control inflammation during bariatric surgery. It may help patients recover better and have fewer complications.
Barcelona, BarcelonaAges 18–65 - NCT07000539Recruiting
Green dye test in repeat weight loss surgery
This trial tests if a green dye, injected during repeat weight loss surgery, helps surgeons see blood flow better. It may reduce complications for people having a second bariatric procedure.
Tijuana, Estado de Baja CaliforniaAges 18 years+ - NCT07098780RecruitingPhase 4
Tranexamic Acid to Prevent Bleeding in Weight Loss Surgery
This trial tests whether a medicine called tranexamic acid (TXA) can reduce bleeding during weight loss surgery. If you are having a sleeve gastrectomy or mini-gastric bypass, taking TXA may lower your risk of hemorrhagic events.
Karachi, SindhAges 18–60 - NCT07289958Recruiting
Breathing muscle training after weight loss surgery
This study tests whether breathing exercises can help people recovering from weight loss (bariatric) surgery. It may improve your breathing and recovery after the procedure.
Quito, PichinchaAges 18–60 - NCT07430111Recruiting
Comparing two breathing methods during weight loss surgery
This study tests two different ways of using a ventilator during bariatric surgery to see which one works better for people with obesity. It may help your lungs work better during and after surgery.
AnkaraAges 18–65
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Common questions
- Are there clinical trials for bariatric surgery?
- Yes. Clin2 currently lists 244 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.