Clinical trials
Bariatric Surgery clinical trials
Below are recruiting bariatric surgery clinical trials, each written for real people, not researchers. We’re tracking 238 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- 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+ - 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+ - NCT04766801Recruiting
Survey for teens seeking weight-loss surgery
This study is a health and survey project for teenagers who are considering bariatric (weight-loss) surgery. It aims to better understand the teen experience and support needs before surgery.
Angers, Maine Et LoireAges 14–20 - NCT04366999Recruiting
Bariatric surgery for fatty liver disease in people with obesity
This trial looks at whether weight-loss (bariatric) surgery helps people with fatty liver disease, including “NASH,” and related liver scarring. If you have obesity and a confirmed liver fat diagnosis (and for NASH, biopsy-proven NASH with some fibrosis), the study may follow your outcomes after surgery.
Beijing, Beijing MunicipalityAges 16–65 - NCT07809152Recruiting
Collagen supplements after weight-loss surgery: muscle and body image
This study tests whether taking collagen supplements after weight-loss surgery helps preserve muscle and improve how you feel about your body. It will compare people who take the supplement with those who don't.
Bursa, YıldırımAges 18–65 - NCT07717333Recruiting
Sarcopenia signs after weight loss surgery
This study looks at muscle changes after bariatric (weight loss) surgery. It may help you understand how your muscles are affected and what you can do to stay strong.
Istanbul, KÜÇÜKÇEKMECEAges 18–65 - NCT07568938Recruiting
Anesthesia types and stress response in weight-loss surgery
This study compares two anesthesia methods—inhaled gas (desflurane) versus IV medication (TIVA)—during weight-loss surgery to see how each affects your body's stress response and recovery. The goal is to understand which approach may be safer and more comfortable for patients having bariatric surgery.
AthensAges 18–65 - NCT07525232Recruiting
Breathing strategies during weight-loss surgery
This trial tests two different ways to keep your lungs inflated with air during bariatric (weight-loss) surgery. Researchers want to see which method helps you breathe better and recover faster after your procedure.
CairoAges 18 years+ - NCT06689241Recruiting
Comparing blood thinners to prevent clots after weight-loss surgery
This study compares two blood-thinning medications, rivaroxaban (a pill) and enoxaparin (a shot), to prevent dangerous blood clots after weight-loss surgery. If you are scheduled for bariatric surgery, this trial could help determine which approach works better for someone like you.
AlexandriaAges 20–60 - NCT05838300Recruiting
Compare special air flow methods during gastric bypass surgery
This trial compares two ways of delivering and removing carbon dioxide gas during minimally invasive gastric bypass and related hiatal hernia repair surgery. It looks at whether one method is safer or more comfortable by changing how the gas is warmed, humidified, and controlled.
Houston, TexasAges 18–65 - NCT06812832RecruitingPhase 4
Simethicone in bariatric surgery recovery
This trial tests if giving simethicone (a gas-relief medication) as part of a standard recovery plan helps patients feel better after weight-loss surgery. It may reduce bloating and discomfort after surgery.
Tacoma, WashingtonAges 18–89 - NCT06391255Enrolling by invitation
Normal stomach emptying test values after weight-loss surgery
This study measures how quickly food leaves the stomach in people who had weight-loss surgery (gastric bypass or sleeve gastrectomy) at least 2 years ago. The goal is to create normal reference values for this test, which may help doctors better understand digestive issues after surgery.
Arnhem, GelderlandAges 18–65 - NCT03490630Recruiting
Survey study after bariatric weight-loss surgery
This study asks adults to complete patient-reported surveys after elective bariatric (weight-loss) surgery. It may help doctors better understand how patients experience recovery and outcomes.
BernAges 18 years+ - NCT03517072Recruiting
Study of long-term success after bariatric surgery
This study looks at what helps people do well in the long run after bariatric (weight-loss) surgery. You may be able to join if you had the surgery about five years ago and are willing to participate.
ArrasAges Any age - NCT05000996Recruiting
Gut microbiome study for people having metabolic surgery
This study looks at your gut bacteria (your “microbiome”) around the time of metabolic surgery. It may help researchers understand how surgery affects gut health and related conditions like diabetes, blood pressure, and cholesterol.
Nashville, TennesseeAges 21–65 - NCT07335731Recruiting
Safety and effectiveness of a new robot for weight-loss surgery
This trial tests a new robot-assisted device for weight-loss surgery in people with obesity. It aims to see if the device is safe and works well for metabolic conditions.
BeijingAges 18–65 - NCT06853652Recruiting
Protein needs after weight-loss surgery
This study looks at how much protein you need after Roux-en-Y gastric bypass (RYGB) surgery. It will help find the right amount of protein to keep your body healthy after weight-loss surgery.
LeuvenAges 18–65 - NCT06881485Recruiting
Medication with or without a special diet for weight regain after bariatric surgery
This study tests if a combination of two drugs (naltrexone and bupropion) with or without a very low-calorie ketogenic diet can help people who have regained weight after gastric bypass or sleeve gastrectomy. It may offer a non-surgical option to manage weight regain.
Leuven, Vlaams-BrabantAges 18 years+ - NCT06950112Recruiting
Comparing two breathing methods for obese patients during weight-loss surgery
This trial tests a personalized way of setting the breathing machine during weight-loss surgery to reduce lung stress. It compares a tailored approach with standard care in people with obesity.
Tanta, El GharbiaAges 18–60 - NCT07073846RecruitingPhase 4
Lidocaine and dexmedetomidine for pain after weight-loss surgery
This study tests whether adding two medicines (lidocaine and dexmedetomidine) to your anesthesia during weight-loss surgery can reduce pain, swelling, and stress on the body. It might help you have a smoother recovery.
Mexico City, Mexico CityAges 18–60 - NCT07064200Recruiting
Timing of TAP blocks for abdominal surgery
This study compares two different ways to give a numbing medicine (TAP block) before abdominal surgery to see which one works better for pain control. If you are scheduled for elective abdominal surgery, joining may help doctors find the best way to manage your pain.
New York, New YorkAges 18–65 - NCT06625762Recruiting
Nantes bariatric surgery study
This study follows people who are preparing for bariatric (weight-loss) surgery to see how the surgery affects their health over time. It is being done to better understand the benefits and risks of bariatric surgery.
Nantes, Loire-AtlantiqueAges 18–70 - NCT06292936Recruiting
Remi for weight regain after weight loss surgery
This study tests if the medication Remi can help people who have gained back at least 5% of their lowest weight after gastric bypass or sleeve gastrectomy. It is meant for those who are not currently using other weight loss drugs and are otherwise healthy enough to participate.
Chicago, IllinoisAges 18–70 - 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
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Common questions
- Are there clinical trials for bariatric surgery?
- Yes. Clin2 currently lists 238 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.