Clinical trials
Bariatric Surgery Candidate clinical trials
Below are recruiting bariatric surgery candidate clinical trials, each written for real people, not researchers. We’re tracking 65 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT05235945Recruiting
Exercise program for people waiting for weight-loss surgery
This trial studies whether an exercise program can help people prepare for bariatric (weight-loss) surgery. It aims to see if exercise is safe and beneficial while you’re waiting for your surgery date.
LondonAges 18 years+ - NCT06781229Recruiting
Gum bacteria in people preparing for weight loss surgery
This trial looks at the bacteria in the mouths of people with a BMI of 30 or higher who are scheduled for weight-loss surgery. The goal is to understand how gum health and body weight are connected.
ToulouseAges 18 years+ - 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 - 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+ - NCT06461247Recruiting
Ready-to-eat meals vs standard care before weight-loss surgery
This trial compares how well patients follow either standard care or ready-to-eat meals before bariatric surgery. It aims to see if providing pre-made meals makes it easier to follow the pre-surgery diet and improve weight loss.
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 - 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 - 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 - NCT06043245Enrolling by invitation
Diabetes remission and weight loss surgery
This trial tests whether a specific type of weight loss surgery can help people with type 2 diabetes stop needing diabetes medication. It is for people with a very high body mass index (BMI over 45) who are currently on diabetes pills or insulin.
L'Hospitalet de Llobregat, BarcelonaAges 18–60 - NCT05725967Enrolling by invitation
Endoscopic and bariatric procedures for obesity
This study looks at people who are having obesity-related procedures, including options done with a scope (endoscopic) and revision after prior bariatric surgery. It may help doctors understand outcomes and improve care for people undergoing these treatments.
Boston, MassachusettsAges 18–80 - NCT05695040Recruiting
Diet workshop after bariatric surgery
This study tests whether a structured diet workshop, held about 15 days after bariatric (weight-loss) surgery, helps patients with their post-surgery eating plans. You may be invited to join the workshop if you are scheduled for surgery and can attend as required.
Clermont-FerrandAges 18 years+ - NCT05531474Recruiting
Bariatric surgery to lower future heart and stroke events
This trial looks at whether weight-loss surgery can reduce the chances of heart attack, stroke, or other serious heart problems in people at higher heart risk. You might be offered surgery and followed over time to see if cardiovascular events are reduced.
Hamilton, OntarioAges 18 years+ - NCT05325736Recruiting
Study how bariatric surgery changes blood sugar response
This study looks at how blood sugar responds after bariatric surgery (or related surgery) and whether changes can be measured over time. It may help doctors better understand which people respond best after surgery.
RehovotAges 18–70 - 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 - 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+ - NCT04590690Recruiting
Gut microbes and sex risks for kidney stones after weight surgery
This study looks at how gut bacteria (microbes), along with sex, may affect the chance of getting kidney stones after bariatric (weight-loss) surgery. It may help doctors understand who is at higher risk so prevention can be improved.
Chicago, IllinoisAges 18–130 - 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 - 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 - 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+ - 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+ - 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 - NCT02390973Recruiting
Bariatric-style surgery vs best diabetes care for long remission
This trial compares surgery plus follow-up care versus the best non-surgical (medical) treatment to help people keep type 2 diabetes in remission for a long time. It may be an option if you have higher body weight and diabetes that’s not well controlled, but safety checks are strict.
Québec, QuebecAges 18–60 - 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 - 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
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Common questions
- Are there clinical trials for bariatric surgery candidate?
- Yes. Clin2 currently lists 65 recruiting bariatric surgery candidate 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 candidate 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 candidate 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.