Clinical trials
Obesity clinical trials
Excess body weight that increases the risk of many other health conditions. We’re tracking 1,434 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT05857150Recruiting
Study tests exercise effects in adults with obesity
This study looks at how your body responds to exercise if you have obesity. It may help researchers understand which changes happen with exercise and how safe it is for people in your age group.
Rochester, MinnesotaAges 20–45 - NCT05799222Recruiting
Nutrition program for obesity and diabetes risk
This trial tests a medically guided nutrition program to help improve weight and blood sugar in adults with obesity or early diabetes risk. It specifically targets people who meet income guidelines and don’t already use most diabetes or anti-obesity medicines.
Boston, MassachusettsAges 18–65 - NCT05798676Recruiting
Study of pregnancy factors linked to a child’s growth
This study looks at breastfeeding mothers and how a mother’s pregnancy and health factors may relate to a child’s growth and body fat. You might be able to join if you were normal weight or overweight/obese before pregnancy and you meet the pregnancy and delivery health requirements.
La Plata, Buenos AiresAges 18–40 - NCT05747976Recruiting
Study for children with very high body size measurements
This study is building a program database for children who have unusually high body size measurements for their age. By collecting genetic and health information, researchers hope to better understand causes of obesity and guide care.
Houston, TexasAges 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 - 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 - 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 - NCT01129297Recruiting
Severe obesity tissue study during surgery
This study collects small tissue samples during certain abdominal surgeries to better understand what drives severe obesity and related blood-sugar patterns. If you agree to the extra sampling, your information and samples may help researchers build a “biological atlas” that could guide future treatments.
Lille, NordAges 18–65 - 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 - 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 - 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 - NCT04087655Recruiting
Study obesity and tiny blood-vessel function in women
This study looks at how obesity affects tiny blood vessels and blood flow. It also checks whether a specific training/exercise approach changes these “microvascular” effects in premenopausal women who fit certain metabolic risk criteria.
Tallahassee, FloridaAges 18–45 - 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 - 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+ - NCT04844684Recruiting
Study hormones and bile acids in women with obesity
This study looks at how cortisol and bile acids are processed in non-menopausal women with obesity. The goal is to understand metabolism differences and potentially guide future treatments or dietary/medication approaches.
LilleAges 18 years+ - NCT03821636Recruiting
Compare gastric bypass limb lengths for type 2 diabetes remission
This study looks at whether a gastric bypass surgery with a longer intestine segment or a longer bile drainage segment leads to better type 2 diabetes remission in people with severe obesity. It may help doctors choose the most effective surgical approach and follow-up plan for diabetes improvement.
AmiensAges 18–60 - NCT05237440Recruiting
Childhood trauma and stress hormones in women with obesity
This study looks at how childhood trauma might affect stress hormones (cortisol) and inflammation in women with obesity. It aims to find connections that could lead to better treatments.
LimogesAges 18 years+ - 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 - NCT05219799RecruitingEarly Phase 1
Study breathing and blood vessel responses in adults with obesity
This early study tests how your body’s blood vessels respond when oxygen levels are lower, and whether body weight changes that response. You may be able to join if you’re not pregnant and meet health, blood pressure, and breathing/smoking criteria.
Columbia, MissouriAges 18–45 - NCT05223530Recruiting
Study of how pregnancy programs future child health
This study follows mothers who previously joined two specific pregnancy research programs, to understand why some children may be more likely to develop weight and heart-related health problems later. If you were part of those original studies, your information could help researchers look for early predictors and prevention ideas.
HelsinkiAges 11–55 - NCT05080699Enrolling by invitation
Peptide-based diet study for adults on home tube feeding
This study tests whether a special “peptide-based” diet helps people with obesity who rely on home tube feeding after a stroke. It aims to see if this diet is safe and beneficial for weight and overall health while you stay on the nutrition you need.
Rochester, MinnesotaAges 18 years+
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Common questions
- Are there clinical trials for obesity?
- Yes. Clin2 currently lists 1,434 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.