Evaluating the Impact of Maridebart Cafraglutide on Cardiovascular Outcomes in Participants With Atherosclerotic Cardiovascular Disease and Overweight or Obesity
The primary objective of this trial is to demonstrate that maridebart cafraglutide is superior to placebo when given as an adjunct to standard of care with respect to reducing cardiovascular (CV) morb...
The Effect of Retatrutide Once Weekly on Cardiovascular Outcomes and Kidney Outcomes in Adults Living With Obesity (TRIUMPH-Outcomes)
The main purpose of this study is to determine if retatrutide can significantly lower the incidence of serious heart-related complications or prevent the worsening of kidney function. The trial will e...
Effect of Naltrexone Hydrochloride ER and Bupropion Hydrochloride ER Combination (Contrave®/Mysimba®) on Major Adverse Cardiovascular Events (MACE)
A randomized, double-blinded, placebo controlled study intended to capture cardiovascular outcomes during real-world use of naltrexone/bupropion (NB)....
Maridebart Cafraglutide in Heart Failure With Preserved or Mildly Reduced Ejection Fraction and Obesity
This study will examine if maridebart cafraglutide as an adjunct to standard of care will lead to a reduction in heart failure (HF) events such as HF hospitalizations and urgent HF visits, cardiovascu...
A Master Protocol Study (LY900038) of Multiple Intervention-Specific-Appendices (ISAs) in Adult Participants With Obesity or Overweight
The purpose of this Phase-2 chronic weight management master protocol (CWMM) is to create a framework to evaluate the safety and efficacy of various investigational interventions for chronic weight ma...
A Master Protocol for Orforglipron (LY3502970) in Participants With Obesity or Overweight With and Without Type 2 Diabetes
The purpose of this Master Protocol is to support two studies to see how well and how safely orforglipron works compared to placebo in participants who have obesity or overweight with or without type ...
A Master Protocol for Orforglipron (LY3502970) in Participants With Hypertension and Obesity or Overweight: (ATTAIN-Hypertension Screening)
The GZPL master protocol will support 2 independent studies, J2A-MC-GZL1 (GZL1) and J2A-MC-GZL2 (GZL2). The purpose of this study is to create a framework to evaluate the safety and efficacy of orforg...
A Study of Tirzepatide (LY3298176) Compared With Placebo in Adults With Type 1 Diabetes and Obesity or Overweight
The main purpose of this study is to find out how well and how safely tirzepatide works in adults who have type 1 diabetes and obesity or overweight. Participation in the study will last about 49 week...
A Study of Orforglipron (LY3502970) in Participants With Obesity or Overweight and Type 2 Diabetes
The main purpose of this study is to see how orforglipron, compared with placebo, helps improve glycemic control in participants with obesity or with overweight and type 2 diabetes. This trial is part...
A Study of Orforglipron (LY3502970) in Participants With Obesity or Overweight and at Least One Weight-Related Comorbidity
The main purpose of this study is to see how orforglipron, compared with placebo, helps reduce body weight in participants with obesity or with overweight and at least one other related health conditi...
A Study of Retatrutide (LY3437943) in Participants Who Have Obesity or Overweight and Chronic Low Back Pain
The main purpose of this study is to evaluate the efficacy and safety of retatrutide in relieving chronic low back pain in participants who have obesity or overweight. Participation in the study will ...
A Master Protocol Study of Orforglipron (LY3502970) in Participants With Hypertension and Obesity or Overweight (ATTAIN-Hypertension) GZL2
GZL2 is an independent study conducted under the GZPL master protocol. GZL2 study will evaluate the efficacy and safety of orforglipron for treatment of hypertension in participants with obesity or ov...
A Master Protocol Study of Orforglipron (LY3502970) in Participants With Hypertension and Obesity or Overweight (ATTAIN-Hypertension) GZL1
GZL1 is an independent study conducted under the GZPL master protocol. GZL1 will evaluate the efficacy and safety of orforglipron for treatment of hypertension in participants with obesity or overweig...
A Long-Term Study of Tirzepatide (LY3298176) in Adults With Type 1 Diabetes and Obesity or Overweight
The main purpose of this study is to find out how well and how safely tirzepatide works long-term in adults who have type 1 diabetes and obesity or overweight. Participation in the study will last abo...
A Research Study to Look Into the Long-term Effect on Weight Loss of CagriSema in People With Obesity
This study will look at how well CagriSema helps people with obesity lose weight compared to a "dummy medicine". CagriSema is a new medicine developed by Novo Nordisk. CagriSema cannot yet be prescrib...
Mirikizumab Administered at the Same Time as Tirzepatide in Adult Participants With Moderately to Severely Active Ulcerative Colitis and Obesity or Overweight: Phase 3b Study
The main purpose of this study is to show whether in these individuals, treatment with both mirikizumab and tirzepatide, compared with treatment with mirikizumab and placebo, leads to decrease or disa...
A Study Evaluating the Effect of Daily Oral RO7795081 in Participants With Obesity or Overweight With at Least One Weight-Related Comorbidity
This multicenter, randomized, double-blind, placebo-controlled, parallel-group, dose-range-finding, Phase II study aims to evaluate the efficacy, tolerability, and safety of RO7795081 for chronic weig...
A Study of Tirzepatide in Adolescents With Obesity and Weight-Related Comorbidities (SURMOUNT-ADOLESCENTS-2)
The goal of the study is to assess how tirzepatide impacts bodyweight and cardiovascular risk factors when used in conjunction with healthy nutrition and physical activity in adolescents with obesity ...
Mirikizumab and Tirzepatide Administered in Adult Participants With Moderately to Severely Active Crohn's Disease and Obesity or Overweight
The main purpose of this study is to evaluate the efficacy and safety of mirikizumab and placebo compared with mirikizumab and concomitantly administered tirzepatide in adult participants with moderat...
A Study to Assess Efficacy, Safety, Tolerability, Pharmacokinetics (PK) and Pharmacodynamics (PD) of RO7204239 in Combination With Tirzepatide in Participants With Obesity or Overweight With At Least One Weight-related Comorbidity
The main aim of the study is to assess the effect of RO7204239 in combination with tirzepatide, compared to placebo in combination with tirzepatide, on body weight loss after 48 weeks of treatment in ...
Efficacy and Safety of Petrelintide in Participants With Overweight or Obesity and Type 2 Diabetes (ZUPREME 2)
The main purpose of this study is to investigate efficacy and safety of three doses of petrelintide versus placebo in participants with overweight or obesity and type 2 diabetes....
A Study to Investigate Effectiveness of Tirzepatide Following Initiation of Ixekizumab in Participants With Active Psoriatic Arthritis and Overweight or Obesity in Clinical Practice (TOGETHER AMPLIFY-PsA)
The main purpose of this study is to assess the effectiveness of adding tirzepatide to ixekizumab therapy in standard clinical practice in participants with moderate-to-severe PsA and obesity or overw...
A Study to Investigate the Effectiveness of Tirzepatide (LY3298176) Following Initiation of Ixekizumab (LY2439821) in Participants With Moderate-to-Severe Plaque PsO and Obesity or Overweight in Clinical Practice (TOGETHER AMPLIFY-PsO)
The main purpose of this study is to assess the effectiveness of adding tirzepatide to ixekizumab therapy in standard clinical practice in participants with moderate-to-severe plaque PsO and obesity o...
Evaluate the Efficacy and Safety of NT-0796 in Participants With Obesity With or Without Type 2 Diabetes Mellitus
A Phase 2a Randomized, Double-Blind, Placebo-Controlled Study to Evaluate the Efficacy and Safety of NT-0796 as an Adjunct to a Reduced Calorie Diet and Increased Physical Activity in Obese Participan...
A Study of a Novel Precision Medicine Approach for Obesity
This study is being done to assess the efficacy of a saliva- based biomarker to predict response to semaglutide for the treatment of obesity....
GV101 in Healthy Obese Participants
The purpose of this trial is to evaluate the efficacy and safety of GV101 for weight loss over a range of doses in participants with obesity. The primary efficacy endpoint is the mean percent change i...
A Platform Trial for Pediatric Participants With Obesity or Overweight (LY900040)
The purpose of this pediatric, chronic weight management, Phase 3 Master Protocol (PWMP) is to create a framework to evaluate the safety and efficacy of pharmacologic agents for the treatment of obesi...
A Study to Evaluate the Efficacy, Safety, and Tolerability in Participants With Obesity or Overweight With Weight-Related Comorbidities
This randomized, double-blind, placebo-controlled phase IIa study is designed to evaluate the efficacy, safety, and tolerability of ASC30 Tablets and ASC30 Tablets A1....
A Study to Evaluate the Efficacy and Safety of Once-Weekly MET097 in Adults With Obesity or Overweight and T2DM
This study is designed to test how well once-weekly MET097 (an ultra-long-acting GLP-1 receptor agonist) works to treat adults with obesity or overweight and type 2 diabetes mellitus (T2DM) compared t...
A Study of Orforglipron (LY3502970) in Adolescent Participants With Obesity, or Overweight With Related Comorbidities
The main purpose of this study, performed under Master Protocol J4M-MC-PWMP, is to evaluate the efficacy, safety, and pharmacokinetics of orforglipron once daily oral versus Placebo in adolescent part...
RECLAIM STUDY: A Phase 2 Evaluating the Efficacy and Safety of Pemvidutide in the Treatment of Alcohol Use Disorder (AUD) in Subjects With Obesity or Overweight
This is a Phase 2, multicenter, randomized, double-blind, placebo-controlled study to evaluate the efficacy and safety of pemvidutide in the treatment of AUD in subjects with obesity or overweight. Af...
Aleniglipron Phase 2 Body Composition Study
This is a randomized, double-blind, placebo-controlled study evaluating the effects of aleniglipron on body composition in participants living with obesity. Participants will be randomized to alenigli...
Efficacy, Safety and Tolerability of AZD6234 in Participants Living With Overweight or Obesity With Type 2 Diabetes Who Are on a Stable Dose of GLP-1 Receptor Agonist
This Phase II study is a randomized, parallel group, double blinded, placebo-controlled, multicenter to evaluate the efficacy, safety, and tolerability of AZD6234 in adults with overweight or obesity ...
Safety and Efficacy of IMM01-STEM Against Placebo on Muscle Performance in Seniors With Obesity and Muscle Weakness
Placebo controlled study for safety and efficacy of IMM01-STEM on muscle performance in seniors with obesity and muscle weakness...
Acute Exercise on Brain Insulin Sensitivity
Dementia is a leading cause of death in the United States among aging adults. Brain insulin resistance has emerged as a pathologic factor affecting memory, executive function as well as systemic gluco...
Investigating Whether Acute Elevation of Fatty Acid Levels Alters Cerebral Glucose Transport and Metabolism
The goal of this study is to understand the role of brain glucose transport in individuals with obesity and the association with cerebral hypometabolism and these individuals' response to plasma gluco...
A Trial of Setmelanotide in Patients With Congenital Hypothalamic Obesity (Sub-study of NCT05774756)
This is a sub-study of Study RM-493-040 (NCT05774756). The goal of this sub-study is to learn how well Setmelanotide works to improve weight reduction, hunger, and quality of life in patients 4 years...
Tirzepatide in PWS, HO and GNSO
This research study is comparing the effectiveness of a weight loss medication called Tirzepatide in young adults with Prader-Willi Syndrome and/or hypothalamic obesity, as compared to young adults wi...
Efficacy and Safety of Phentermine/Topiramate in Youth With Hypothalamic Obesity
Hypothalamic obesity (HO) refers to the substantial weight gain that often complicates hypothalamic brain tumors. Children with this treatment-recalcitrant form of obesity have excess rates of metabol...
Top Cities for Obesity Clinical Trials
Obesity clinical trials are recruiting across 156 cities. Here are the cities with the most active studies:
About Obesity
Obesity is a complex chronic disease involving an excessive amount of body fat that increases the risk of other diseases and health problems. It affects over 650 million adults worldwide. Treatment approaches include lifestyle modifications, medications (GLP-1 agonists), and bariatric surgery.
Clinical trials are advancing new treatments for obesity. Currently, 39 studies are recruiting a combined 47,898 participants across the United States. Research is being conducted by 20 organizations including Amgen, Eli Lilly and Company, Currax Pharmaceuticals and 17 others.
2026 Obesity Research Landscape
As of March 2026, the obesity clinical trial landscape includes 39 actively recruiting studies across 156 cities in the United States. These studies are collectively seeking 47,898 participants, with an average enrollment target of 1,228 per study.
Research is being led by 20 different organizations, including Amgen, Eli Lilly and Company, Currax Pharmaceuticals, Novo Nordisk A/S, Hoffmann-La Roche, and 15 others. The large number of sponsors reflects significant research interest and investment in obesity treatment advancement.
Geographically, obesity trials are most concentrated in Phoenix, Arizona (13 trials); Tucson, Arizona (10 trials); Miami, Florida (9 trials); Jacksonville, Florida (8 trials); Northridge, California (7 trials) and 7 other cities.
Featured Obesity Studies
Highlighted recruiting studies for obesity, selected by enrollment size and research scope.
Evaluating the Impact of Maridebart Cafraglutide on Cardiovascular Outcomes in Participants With Atherosclerotic Cardiovascular Disease and Overweight or Obesity
The primary objective of this trial is to demonstrate that maridebart cafraglutide is superior to placebo when given as an adjunct to standard of care with respect to reducing cardiovascular (CV) morbidity and mortality.
The Effect of Retatrutide Once Weekly on Cardiovascular Outcomes and Kidney Outcomes in Adults Living With Obesity (TRIUMPH-Outcomes)
The main purpose of this study is to determine if retatrutide can significantly lower the incidence of serious heart-related complications or prevent the worsening of kidney function. The trial will enroll adults with body mass index 27 kg/m\^2 or higher and Atherosclerotic Cardiovascular Disease and/or chronic kidney disease. The study will last for about 5 years. Participants will have up to 27 ...
Effect of Naltrexone Hydrochloride ER and Bupropion Hydrochloride ER Combination (Contrave®/Mysimba®) on Major Adverse Cardiovascular Events (MACE)
A randomized, double-blinded, placebo controlled study intended to capture cardiovascular outcomes during real-world use of naltrexone/bupropion (NB).
Frequently Asked Questions About Obesity Clinical Trials
Are there obesity clinical trials near me?
Yes, there are 39 obesity clinical trials currently recruiting across 156+ cities in the United States, including Phoenix, Arizona; Tucson, Arizona; Miami, Florida. Browse the studies above to find one at a location convenient for you.
How do I join a obesity clinical trial?
To join a obesity clinical trial: 1) Browse the available studies on this page, 2) Click on a study that interests you, 3) Check the study locations to find a site near you, 4) Review the eligibility criteria, and 5) Contact the study site or complete the eligibility form. The process is free and you can withdraw at any time.
Are obesity clinical trials free?
Yes, participation in obesity clinical trials is free. Study-related treatments, medical tests, and doctor visits are provided at no cost to participants. Many studies also offer compensation for your time and travel expenses.
What types of obesity treatments are being studied?
Current obesity clinical trials are testing a range of approaches. These include new drugs, combination therapies, medical devices, and other interventions sponsored by 20 research organizations.
Is it safe to participate in obesity clinical trials?
Clinical trials are carefully regulated by the FDA and institutional review boards (IRBs). All trials must follow strict safety protocols, and participants receive close medical monitoring throughout the study. You can withdraw from a trial at any time without penalty.
Data updated March 1, 2026 from ClinicalTrials.gov
About This Data
Clinical trial information on this page is sourced from ClinicalTrials.gov, a service of the U.S. National Institutes of Health (NIH) and National Library of Medicine (NLM). Study data is refreshed every hour to ensure accuracy.
Medical Disclaimer: The information provided on this page is for informational purposes only and does not constitute medical advice. Always consult with a qualified healthcare provider before making decisions about clinical trial participation or changes to your treatment plan.
Page reviewed by the HelloStudys Research Team · Last updated March 1, 2026 · Data from ClinicalTrials.gov