Study type
Weight loss and obesity studies recruiting now
Weight-management research includes trials of new medicines, devices, diets and lifestyle programs for people with overweight or obesity, and studies of weight-related conditions such as fatty liver disease.
365 recruiting studiesSource: ClinicalTrials.gov, refreshed October 26, 2026How we list studies
More recruiting studies (pay not posted)
- RecruitingHealthy volunteers
Testing a Tailored Approach to Long-Term Weight Loss Success
University of Utah
- Location
- Salt Lake City, UT
- Eligibility basics
- Ages 18–65
- RecruitingHealthy volunteers
CV Imaging of Metabolic Interventions
The Cleveland Clinic
- Location
- Cleveland, OH
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Targeting Breathing Limitations to Improve Functional Outcomes in HFpEF
University of Texas Southwestern Medical Center
- Location
- Dallas, TX
- Eligibility basics
- Ages 55–90
- RecruitingHealthy volunteers
EAT: A Reliable Eating Assessment Technology for Free-living Individuals
Northwestern University
- Location
- Chicago, IL
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Brain and Behavior Influences on Obesity Development From Infancy Through Childhood
Johns Hopkins University
- Location
- Providence, RI
- Eligibility basics
- Ages 7–12
- RecruitingHealthy volunteers
Routine Validation and Reproducibility Testing of Laboratory Assays and Research Techniques Used for Endocrine, Cardiometabolic, and Musculoskeletal Disorder Research (VALD)
Bettina Mittendorfer
- Location
- Columbia, MO
- Eligibility basics
- Ages 18–100
- RecruitingHealthy volunteers
Impact of Obesity on Microvascular Insulin Action and Cardiorespiratory Fitness in Type 1 Diabetes
University of Virginia
- Location
- Charlottesville, VA
- Eligibility basics
- Ages 21–50
- RecruitingHealthy volunteers
Reducing Obesity Through Play Among Toddlers: Tiny Steps to Health (TSHS) Study
University of Houston
- Location
- Houston, TX
- Eligibility basics
- Ages 1–3
- RecruitingHealthy volunteers
Determinants of Insulin Sensitivity by Age, Sex, Race/Ethnicity, BMI, and PCOS Diagnosis
Ali Chappell
- Location
- Houston, TX
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Gut, Immune, and Vascular Health in Metabolically Healthy Obesity
Ball State University
- Location
- Muncie, IN
- Eligibility basics
- Ages 18–55
- RecruitingHealthy volunteers
Stable Isotopes- Adults With Obesity
University of Illinois at Urbana-Champaign
- Location
- Urbana, IL
- Eligibility basics
- Ages 19–59
- RecruitingHealthy volunteers
Exercise and Protein Efficiency in T2D
University of Illinois at Urbana-Champaign
- Location
- Urbana, IL
- Eligibility basics
- Ages 65+
- RecruitingHealthy volunteers
Adipocyte-Derived Extracellular Vesicles, Weight Loss, and Endothelial Function
University of Colorado, Boulder
- Location
- Boulder, CO
- Eligibility basics
- Ages 40+
- RecruitingHealthy volunteers
Effects of Body Composition on Vascular Health in Females With a Healthy Body Weight
Ball State University
- Location
- Muncie, IN
- Eligibility basics
- Ages 18–50 · Women only
- RecruitingHealthy volunteers
Dietary Peanuts and Nutrition-Related Outcomes
Ian J. Neeland, MD
- Location
- Clevland, OH
- Eligibility basics
- Ages 18–80
- RecruitingHealthy volunteers
Leg Heating in Pregnant Women With Obesity
University of Texas Southwestern Medical Center
- Location
- Dallas, TX
- Eligibility basics
- Ages 18–45 · Women only
- RecruitingHealthy volunteers
Randomized Trial of Healthy Family Foundations
Penn State University
- Location
- Nellis Air Force Base, NV
- Eligibility basics
- Ages 18–60
- RecruitingHealthy volunteers
Metabolic Adaptations to Weight Loss With and Without Exercise
University of Michigan
- Location
- Ann Arbor, MI
- Eligibility basics
- Ages 18–40
- RecruitingHealthy volunteers
The Sleep2BWell Trial
Columbia University
- Location
- New York, NY + 1 other US site
- Eligibility basics
- Ages 20+
- RecruitingHealthy volunteers
Mothers' Action Project for Child Health
University of Massachusetts, Worcester
- Location
- New York, NY
- Eligibility basics
- Ages 1–45
- RecruitingHealthy volunteers
Dinner Time for Obesity and Prediabetes
Johns Hopkins University
- Location
- Baltimore, MD
- Eligibility basics
- Ages 18–50
- RecruitingHealthy volunteers
Prebiotic Effects of California Grapes on Gut Health and Cardiometabolic Health in Overweight Men and Women
University of California, Davis
- Location
- Davis, CA
- Eligibility basics
- Ages 45–70
- RecruitingHealthy volunteersPhase 2/Phase 3
PRECISION-BP: Precision Chronopharamacotherapy Targeting NP-RAAS-BP Rhythm Axis
University of Alabama at Birmingham
- Location
- Birmingham, AL
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Testing the Adipose Expandability Hypothesis In Vivo During Overfeeding
Pennington Biomedical Research Center
- Location
- Baton Rouge, LA
- Eligibility basics
- Ages 18–42
Who these studies look for
Most of these studies set a BMI range and may exclude people taking certain weight-loss medicines or who have had bariatric surgery. Some require a weight-related condition such as type 2 diabetes or high blood pressure.
Matching a page like this one never means you qualify. Each research team decides eligibility at screening.
Questions
Can I join a weight loss study if I already take a GLP-1 medicine?
It depends on the study. Many exclude people currently or recently on weight-loss medicines; others are designed specifically for them. The listing’s eligibility criteria and the study team are the only reliable answer.