Clinical trials
Overweight or Obese clinical trials
Below are recruiting overweight or obese clinical trials, each written for real people, not researchers. We’re tracking 1,535 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT03875625Recruiting
Tracking body fat and liver fat after weight-loss treatment
This study looks at how body fat and liver fat change after bariatric (weight-loss) surgery or a lifestyle program. You may join if you have overweight or obesity and can safely have MRI scans, so researchers can compare results between treatment approaches.
Hong Kong, ShatinAges 18–65 - NCT03934957Recruiting
Study of health in people living in Hamburg
This study follows adults living in Hamburg to better understand health and health-related factors over time. You may help researchers learn what influences health in this age group.
HamburgAges 45–74 - NCT03987633Recruiting
Study links health records and samples to understand health gaps
This study asks people affected by a specific illness (or their family member) to share saliva (and sometimes blood) and answer health and quality-of-life questions. The goal is to better understand and reduce health inequality by matching new information with medical records.
Wolverhampton, West MidlandsAges 6 years+ - NCT07702149Recruiting
Diet for Behcet's disease patients with ringing in the ears
This trial tests whether a special diet can help ringing in the ears (tinnitus) in people with Behcet's disease who also have obesity. The goal is to see if dietary changes reduce tinnitus symptoms.
Giza, DokkiAges 40–55 - NCT07703020Enrolling by invitation
Obesity in PKU patients
This study looks at how common obesity is in adults with PKU and what factors may contribute to it.
Lausanne, Canton of VaudAges 18 years+ - 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 - NCT04013282Recruiting
Tests gut and nerve function in people with digestive symptoms
This study maps how the nerves that control digestion and other body functions are working in people with symptoms that may come from nerve-related gut problems. It may help researchers better understand these conditions and improve future treatment.
Louisville, KentuckyAges 10–80 - NCT04014413Recruiting
Fecal transplant for gut and immune-related conditions
This trial studies whether fecal microbiota transplantation (FMT)—a medical procedure using stool from a screened donor to restore gut bacteria—can improve safety and outcomes for people with certain bowel, immune, and metabolic conditions. It may help if your symptoms are thought to be related to an unhealthy gut microbiome, though eligibility is broad and depends on specific safety factors.
Hong Kong, ShatinAges Any age - NCT04040413Recruiting
Database update for bariatric weight-loss surgery
This trial is a “database maintenance” study related to bariatric (weight-loss) surgery. It helps keep the records up to date and may support future care by organizing information about patients who get surgery.
Ramat GanAges Any age - NCT04040777Recruiting
Cardiometabolic risk registry for adults
This study is a health registry that collects information about risk factors for heart and metabolic problems in adults. It may help doctors better understand who is at higher risk and guide future prevention strategies.
Pilar, Buenos AiresAges 18 years+ - NCT04046562Recruiting
Testing a teen pain-and-weight program
This trial studies a program meant to help teens manage weight when they also have ongoing muscle or joint pain. It may help by targeting pain feelings and supporting healthier weight habits at the same time.
Hartford, ConnecticutAges 12–18 - NCT04101669Recruiting
Diabetes device trial to improve blood sugar and weight
This study tests the RESET System to help people with type 2 diabetes lower their average blood sugar (HbA1c) despite current medication. It may also affect weight and safety outcomes by changing how food moves through the gut.
Washington D.C., District of ColumbiaAges 22–65 - NCT04136717Recruiting
Test if FreeO2 helps keep oxygen levels in range
This study looks at whether adding FreeO2 can help keep your oxygen saturation (a measure of oxygen in the blood) within a target range while you use breathing support like NIV or CPAP. It may help reduce time spent either too low or too high in oxygen levels.
Québec, QuebecAges 18 years+ - NCT04174755Recruiting
Semaglutide for weight loss in adults with HIV
This trial studies whether semaglutide (a diabetes-type weight-loss injection) helps adults with HIV lose weight. It also checks that it’s safe for people whose HIV is well controlled on regular treatment.
Dublin, DublinAges 18 years+ - NCT04248127Recruiting
Honey yogurt to improve gut health and mild inflammation
This study tests whether honey-flavored yogurt can improve gut health and “low-grade” inflammation in middle-aged and older women after menopause. You may be asked to follow a yogurt-focused plan and avoid certain foods or supplements to see the effect.
Davis, CaliforniaAges 45–65 - NCT04255264Recruiting
Study of fat inflammation in people after gastric bypass
This study looks at “fat inflammation” and diabetes in people who had gastric bypass surgery. It may help doctors understand why some people develop diabetes and how weight-related body changes affect health.
Gothenburg, Västra Götaland CountyAges 18–60 - NCT04328337RecruitingPhase 1/Phase 2
Study tests how rising fatty acids affect brain fuel use
This early-phase study will raise fatty acid levels temporarily and see how the brain uses glucose (sugar) and processes energy. It may help researchers understand how metabolism in the body can change brain function.
Chapel Hill, North CarolinaAges 18–45 - NCT04352244Recruiting
Study of brown fat activity in healthy adults
This study measures how “brown fat” works in the body using planned medical procedures. It looks at healthy adults to understand brown fat activity and what affects it.
Boston, MassachusettsAges 18–75 - NCT04371042Recruiting
Study of liver disease and genes in people with fatty liver
This study collects information about metabolic and unexplained (cryptogenic) liver disease and looks at “omics” tests, which are lab tests that measure patterns in blood or tissue to learn what drives the disease. It may help researchers better understand fatty liver and related serious complications, like liver scarring and liver cancer.
Roma, Rome/lazio/italyAges 18 years+ - NCT04375280Recruiting
Study of mobility problems in people with long-term illnesses
This study observes how people with chronic health conditions affect their ability to move and do everyday activities. It may help researchers better understand mobility limits and what factors influence them.
Clermont-FerrandAges 18–90 - NCT04422405Recruiting
One-anastomosis stomach bypass study for reflux and stomach changes
This study looks at how a one-anastomosis gastric bypass changes how your stomach and esophagus work, especially relating to acid reflux. You may be offered the planned surgery if you fit the weight and heartburn/reflux-related conditions, and the team will measure changes before and after.
Schlieren, Canton of ZurichAges 18–65 - NCT04431232Recruiting
Gastric banding during endoscopy to help with weight loss
This trial studies an endoscopic procedure that places a band inside the stomach to help reduce weight. You may be considered if your body weight is above a certain level and you’re able to safely undergo an endoscopy.
Giza, DokkiAges 18–65 - NCT04432025Recruiting
Medication after weight-loss surgery for type 2 diabetes
This trial looks at whether a specific diabetes medicine given after bariatric (weight-loss) surgery can improve blood sugar control in people with type 2 diabetes. You might be considered if you are eligible for this surgery and meet the weight criteria.
DublinAges 18 years+ - NCT04442334Recruiting
European registry for people with fatty liver
This registry collects health and lifestyle information from adults with suspected or confirmed fatty liver (NAFLD) to help researchers better understand the condition. You may be asked about diet, exercise, alcohol intake, and some liver-related tests.
AntwerpAges 18–100
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Common questions
- Are there clinical trials for overweight or obese?
- Yes. Clin2 currently lists 1,535 recruiting overweight or obese 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 overweight or obese 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 overweight or obese 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.