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
How a Single Workout Affects Gut Bugs in Women With Different Fitness Levels and Body Types
George Washington University
- Location
- Washington D.C., DC
- Eligibility basics
- Ages 21–40 · Women only
- RecruitingHealthy volunteers
Intermittent Cottonseed Oil Consumption
University of Georgia
- Location
- Athens, GA
- Eligibility basics
- Ages 25–75
- RecruitingHealthy volunteers
Inflammation, Diabetes, Ethnicity and Obesity Cohort
University of California, San Francisco
- Location
- San Francisco, CA
- Eligibility basics
- Ages 18–75
- RecruitingHealthy volunteers
Effects of Dietary Supplements on Muscle Mass and Function While Using GLP-1 Medication
University of California, Los Angeles
- Location
- Los Angeles, CA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Healthy Options At Pantries (HOAP) Study
Northwestern University
- Location
- Chicago, IL
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Ketogenic Diet and Diabetes Demonstration Project
University of New Mexico
- Location
- Albuquerque, NM
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Effects of Obesity in the Aged
University of Texas Southwestern Medical Center
- Location
- Dallas, TX
- Eligibility basics
- Ages 65–75
- RecruitingHealthy volunteersPhase 2
Taxi ROADmAP (Realizing Optimization Around Diet And Physical Activity)
Memorial Sloan Kettering Cancer Center
- Location
- New York, NY
- Eligibility basics
- Ages 21+
- RecruitingHealthy volunteers
HealthyTogether: RCT of a Dyadic Weight Management Intervention
VA Office of Research and Development
- Location
- Aurora, CO + 1 other US site
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Healthy Children, Healthy Communities: Effectiveness of a Multilevel Rural Community Engagement Model for Improving Children's Dietary Intake in Family Child Care Homes
University of Nebraska Lincoln
- Location
- Lincoln, NE
- Eligibility basics
- Ages 3+
- RecruitingHealthy volunteers
BRIDGE & Friends Trial
University of Illinois at Chicago
- Location
- Chicago, IL
- Eligibility basics
- Ages 50–79
- RecruitingHealthy volunteersPhase 4
The Effects of Mirabegron and Tadalafil on Glucose Tolerance in Prediabetics
Philip Kern
- Location
- Lexington, KY
- Eligibility basics
- Ages 35–65
- RecruitingHealthy volunteers
The Effects of Increasing Caloric Intake on Diet-Induced Thermogenesis and 24h Energy Expenditure
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
- Location
- Phoenix, AZ
- Eligibility basics
- Ages 18–60
- RecruitingHealthy volunteers
Effects of Watermelon or Low-fat Cookie Consumption on Wellness
San Diego State University
- Location
- San Diego, CA
- Eligibility basics
- Ages 18–50
- RecruitingHealthy volunteers
Evaluation of RSB11-HI Postbiotic Supplementation for Supporting Weight Management, Metabolic Wellness, and Quality of Life in Healthy Adults
Able Biolabs, LLC
- Location
- Dallas, TX
- Eligibility basics
- Ages 18–55
- RecruitingHealthy volunteers
Assess the Effects of Replacing Foods High in Refined Carbohydrates With Avocado on Biomarkers of Inflammation.
Midwest Center for Metabolic and Cardiovascular Research
- Location
- Chicago, IL
- Eligibility basics
- Ages 21–74
- RecruitingHealthy volunteers
PPDTM CorEvitasTM Obesity (OBR) Drug Effectiveness and Safety Registry
CorEvitas
- Location
- Waltham, MA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Virtual Housecalls: Redesigning Pediatric Primary Care Adolescent Obesity Treatment
Virginia Commonwealth University
- Location
- Henrico, VA
- Eligibility basics
- Ages 12–15
- RecruitingHealthy volunteers
Self-monitoring Focus Groups With Vibrant Lives Pasadena Participants
M.D. Anderson Cancer Center
- Location
- Houston, TX
- Eligibility basics
- Any age listed
- RecruitingHealthy volunteers
Circadian Rhythms in Postmenopausal Women
Julie Pendergast
- Location
- Lexington, KY
- Eligibility basics
- Ages 45–65 · Women only
- RecruitingHealthy volunteers
Role of KATP Channel Loss in Type 2 Diabetes
Washington University School of Medicine
- Location
- St Louis, MO
- Eligibility basics
- Ages 18–65
- RecruitingHealthy volunteers
Advancing Biopsychosocial Care Training Initiative
Washington University School of Medicine
- Location
- St Louis, MO
- Eligibility basics
- Ages 5+
- RecruitingHealthy volunteers
Improving Cervical Cancer Prevention Among Women Living With Chronic Conditions.
University of Florida
- Location
- Gainesville, FL
- Eligibility basics
- Ages 25+ · Women only
- RecruitingHealthy volunteersPhase 2
Cannabis for Obesity Trial
Joshua A. Lile, Ph.D.
- Location
- Lexington, KY
- 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.