Clinical trials
Obesity clinical trials
Excess body weight that increases the risk of many other health conditions. We’re tracking 1,500 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT05242835Recruiting
Study for weight regain after sleeve stomach surgery
This trial studies a specific type of metabolic (weight-related) surgery for people whose sleeve gastrectomy did not lead to enough weight loss or has caused significant weight regain. It may help improve long-term weight and related health problems.
Québec, QuebecAges 18–60 - NCT05277714Recruiting
Neurofeedback for food addiction in people with obesity
This trial tests whether brain-training feedback using near-infrared sensors (a painless light-based brain measure) can reduce food addiction behaviors in people with obesity. If you qualify for obesity surgery and have food addiction signs, you may be offered this therapy and monitored during the study.
RennesAges 18–55 - NCT05281016Recruiting
Online family program to help children with weight
This study tests an online, family-based program (called the LITE Programme) to help children who are overweight. It may help improve healthy habits at home and support weight management.
SingaporeAges 6–12 - NCT05312892RecruitingPhase 1/Phase 2
Study for weight-related hormone signals in people with high blood pressure
This early-phase study looks at how the body’s “fight-or-flight” signals may be involved in weight gain (obesity) and high blood pressure. It may help researchers understand the biology and guide future treatments.
Nashville, TennesseeAges 18–65 - NCT05326477Recruiting
Study factors that predict how well behavioral weight plans work
This study looks at which personal and health factors help or hurt how well behavioral obesity treatments work. It may help doctors better tailor weight-treatment plans for people with obesity.
Chicago, IllinoisAges 18 years+ - NCT05364957Recruiting
Gastric balloon plus asthma care for uncontrolled asthma and obesity
This study tests whether placing a soft “balloon” inside the stomach (intragastric balloon) can help people who have uncontrolled asthma and obesity. It also checks whether the balloon is safe and can improve asthma control when standard inhaler treatment is already in use.
Toulouse, OccitanieAges 18–65 - NCT05419726Recruiting
Semaglutide study to see how brown fat responds in weight loss
This trial studies how brown fat (a type of body fat) changes after starting semaglutide for weight loss. You may help researchers understand how this medication affects the body’s energy use, which could improve weight-loss treatments.
Los Angeles, CaliforniaAges 18 years+ - NCT05459636Recruiting
Breathing muscle training for adults with obesity
This trial tests whether strengthening your breathing muscles (using a device) can improve health and breathing-related symptoms in adults with obesity. It’s meant for people who are otherwise medically stable and meet specific safety rules.
Tallahassee, FloridaAges 18–45 - NCT05477212Recruiting
Study gut leakiness in obesity and fatty liver with a ketogenic diet
This study looks at “gut permeability,” sometimes called intestinal leakiness, in people with obesity and fatty liver disease. It tests whether a ketogenic (very low-carb) diet changes gut leakiness and fatty liver measurements.
Castellana Grotte, BARIAges 18–65 - NCT05494138Recruiting
AI-based nutrition study for adults with obesity and normal weight
This study uses nutrition information and artificial intelligence to better understand diet patterns in adults with obesity and in adults with normal weight. Your results may help researchers design better nutrition guidance for people with obesity and related health risks.
SeoulAges 19 years+ - NCT05516576Recruiting
Weight-loss procedure plus diabetes care for type 2 diabetes
This trial studies whether an endoscopic (camera-guided) stomach tightening/suturing procedure plus standard diabetes care can improve health in people with type 2 diabetes and mild-to-moderate obesity. It compares this procedure to standard care alone to see which approach works better and is safe.
La TroncheAges 18–65 - NCT05554016Recruiting
Ultra-processed food study in kids with obesity
This study looks at how eating ultra-processed foods affects metabolism and body weight in children and teens with obesity, and compares them with healthy peers. Your participation may help scientists understand whether diet choices contribute to weight and metabolic problems.
NaplesAges 6–18 - NCT05554224Recruiting
Personalized treatment based on obesity-related fatty liver tests
This study uses multiple types of health data (“multi-omics”) to help choose a personalized treatment plan for people with obesity-related fatty liver disease. It may help match treatment to your biology to improve outcomes.
Reus, TarragonaAges 18 years+ - NCT05569681Recruiting
Two blood-thinner schedules for clot prevention in very obese surgery patients
This study compares two different schedules of bemiparin (a blood thinner) to prevent dangerous blood clots after surgery in people with very high body weight. It may help find the safest and most effective dose/timing for clot prevention around the time of surgery.
Erbil, Kurdistan RegionAges 18–90 - NCT05589688RecruitingPhase 1
Personalized acyclovir dosing in overweight and obese volunteers
This Phase 1 study tests how to adjust acyclovir dosing based on body weight and kidney function. It includes healthy volunteers across normal weight, overweight, and obesity levels to better understand how the drug moves through the body.
ToulouseAges 18–50 - NCT05608668Recruiting
Breathing and activity coaching for kids with obesity and mild asthma
This trial tests an “inspiratory pulmonary rehabilitation” program—guided breathing and exercise training—for children who have obesity and mild asthma. It may help improve breathing control and exercise ability by teaching safe, structured breathing and activity habits.
Durham, North CarolinaAges 8–17 - NCT05611697Recruiting
Compare two weight-loss surgeries for severe obesity
This trial compares two types of bariatric (weight-loss) surgery to see which helps people with severe obesity lose weight and stay healthy. You might be eligible if you’re between 20 and 60 and are already being referred for bariatric surgery after prior unsuccessful weight-loss attempts.
Tønsberg, VestfoldAges 20–60 - NCT05654337Recruiting
Lifestyle care program for overweight and obesity in primary care
This trial studies a new care approach (a pathway) for adults with overweight or obesity in local primary care clinics. It aims to help patients improve health through structured support, and it may be especially useful if you want guidance within routine clinic visits.
Ha'ilAges 18–60 - NCT05674799Recruiting
Program to lower future obesity and diabetes risks
This trial tests a lifestyle and coaching program (NDPP-NextGen) to help reduce the chances of obesity and diabetes risk passing to the next generation. It’s for people planning a pregnancy soon and who may be at higher risk due to body weight.
Winston-Salem, North CarolinaAges 18–39 - NCT05703347Recruiting
Mobile app coaching to improve sleep and prevent childhood obesity
This study tests a mobile health app that helps children get better sleep, aiming to support healthier weight over time. It is designed for children who are getting less sleep than recommended and are in the higher-but-not-highest weight range for their age.
Philadelphia, PennsylvaniaAges 8–12 - NCT05713448Recruiting
Check how common overweight is in adults with type 1 diabetes
This study looks at how many adults with type 1 diabetes have overweight or obesity. It may help improve future care planning for people living with type 1 diabetes.
LeuvenAges Any age - NCT05726942Recruiting
Using a weight-management mobile app for adults with extra weight
This trial studies whether a mobile phone app can help people manage weight. It may help you if you have overweight or obesity and are able to track your weight with a bathroom scale.
San Diego, CaliforniaAges 18–64 - NCT05740254Recruiting
Compare early versus late eating times for teen obesity
This study tests whether having a shorter daily eating schedule earlier in the day works better than a later eating schedule for reducing weight and improving health in teens with obesity. Participants will also follow planned fasting (not eating) periods and complete regular check-ins.
Los Angeles, CaliforniaAges 12–21 - NCT05745441Recruiting
Dinner routine study for weight and prediabetes health
This study tests whether changing your dinner timing and routine can improve health related to weight and blood sugar in people with obesity and prediabetes (or healthy weight). You’ll follow a set dinner schedule and complete study visits while the team monitors outcomes.
Baltimore, MarylandAges 18–50
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Common questions
- Are there clinical trials for obesity?
- Yes. Clin2 currently lists 1,500 recruiting obesity 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 obesity 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 obesity 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.