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
Nurturing Needs Study: Parenting Food Motivated Children
Temple University
- Location
- Philadelphia, PA + 1 other US site
- Eligibility basics
- Ages 4–5
- RecruitingHealthy volunteers
eMOTION: Examining Implicit Attitudes in Physical Activity Engagement
University of Southern California
- Location
- Los Angeles, CA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
The Physiology of Human Brown Adipose Tissue
Beth Israel Deaconess Medical Center
- Location
- Boston, MA
- Eligibility basics
- Ages 18–75
- RecruitingHealthy volunteers
Prescription of Step Counts for Targeted Changes in Body Composition and Cardiometabolic Risk in Overweight/Obese Adults
Kennesaw State University
- Location
- Kennesaw, GA
- Eligibility basics
- Ages 20+
- RecruitingHealthy volunteers
Impact of Increased Body Mass Index on Adolescent Fixed Orthodontic Treatment. A Prospective Longitudinal Study
University of Rochester
- Location
- Rochester, NY
- Eligibility basics
- Ages 12–18
- RecruitingHealthy volunteers
Effects of HIIT vs. TRE on Type 2 Diabetes Risk
Syracuse University
- Location
- Syracuse, NY
- Eligibility basics
- Ages 14–30
- RecruitingHealthy volunteers
Pregnancy 24/7 Offspring Study
Kara Whitaker
- Location
- Iowa City, IA + 1 other US site
- Eligibility basics
- Ages 0 mo–47
- RecruitingHealthy volunteers
Weight Loss and Physical Fitness Following Pregnancy in Active Duty Women
Tripler Army Medical Center
- Location
- Honolulu, HI + 1 other US site
- Eligibility basics
- Ages 18–44 · Women only
- RecruitingHealthy volunteers
DNA Methylation and Vascular Function
University of Illinois at Chicago
- Location
- Chicago, IL
- Eligibility basics
- Ages 18–50
- RecruitingHealthy volunteers
Community Park-Based Programs for Health Promotion: The Fit2Lead Prospective Cohort Study
Duke University
- Location
- Miami, FL
- Eligibility basics
- Ages 12–17
- RecruitingHealthy volunteers
Motivational Wellness Coaching to Reduce Childhood Obesity in Families and Kids
Kaiser Permanente
- Location
- Pasadena, CA
- Eligibility basics
- Ages 2–8
- RecruitingHealthy volunteers
Exercise, Brain Activity, and Weight Maintenance
Joslin Diabetes Center
- Location
- Boston, MA
- Eligibility basics
- Ages 18–70
- RecruitingHealthy volunteers
Community Park-Based Programs for Health Promotion: Fit2Play Prospective Cohort Study
Duke University
- Location
- Miami, FL
- Eligibility basics
- Ages 6–14
- RecruitingHealthy volunteers
ADAPT Study: Assessing Diet, Appetite and Physiology Throughout Weight Loss Study)
University of Washington
- Location
- Seattle, WA
- Eligibility basics
- Ages 18–60
- RecruitingHealthy volunteers
Time Restricted Feeding, Muscle, and Metabolism
University of Arkansas, Fayetteville
- Location
- Fayetteville, AR
- Eligibility basics
- Ages 25–50
- RecruitingHealthy volunteers
Studying Phenotypic Risks for Obesity and Underlying Traits in Young Infants
Pennington Biomedical Research Center
- Location
- Baton Rouge, LA
- Eligibility basics
- Ages 0 mo–4 mo
- RecruitingHealthy volunteers
Non-interventional Pre-screening Protocol Aims to Evaluate Participants for Potential Trial Eligibility in Future Clinical Trials/Studies Focusing on Metabolic and Psychiatric Health.
Clindove Research LLC
- Location
- Brooklyn, NY
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Impact of Supplemental Fiber on Gut and Vascular Health Related in Obesity Phenotypes
Ball State University
- Location
- Muncie, IN
- Eligibility basics
- Ages 18–55
- RecruitingHealthy volunteers
Immunoinflammatory Response in Post Cardiac Arrest Syndrome (PCAS)
MaineHealth
- Location
- Portland, ME
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
The Precision Nutrition New York Study
Cornell University
- Location
- Ithaca, NY
- Eligibility basics
- Ages 21–50
- RecruitingHealthy volunteers
FRESH-EATS Project
University of South Florida
- Location
- Tampa, FL
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
The Epidemiology and Pathophysiology of Kidney Disease in HFpEF With Obesity
University of Mississippi Medical Center
- Location
- Jackson, MS
- Eligibility basics
- Ages 18–75
- RecruitingHealthy volunteers
eMOTION: Examining Affective Mechanisms in Physical Activity Engagement
University of Southern California
- Location
- Los Angeles, CA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersPhase 2
Supplementing L-citrulline to Overweight Late Asthma oNset Phenotypes
University of Colorado, Denver
- Location
- Durham, NC
- Eligibility basics
- Ages 18–65
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.