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
INTEGRATED CHILDHOOD ACTIVITY AND NUTRITION (ICAN) STUDY
University of Illinois at Urbana-Champaign
- Location
- Bloomington, IL
- Eligibility basics
- Ages 6–11
- RecruitingHealthy volunteers
Building Research for Intervention Development in Gliosis and Eating Habits
University of Washington
- Location
- Seattle, WA
- Eligibility basics
- Ages 9+
- RecruitingHealthy volunteers
Diet-Induced Changes in GEnetic Material
Pennington Biomedical Research Center
- Location
- Baton Rouge, LA
- Eligibility basics
- Ages 20–35 · Men only
- RecruitingHealthy volunteersPhase 2
Social Determinants and a Diabetes Prevention Program Tailored for African Americans
University of Missouri, Kansas City
- Location
- Kansas City, MO
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Brown Adipose Tissue Activity in Response to Semaglutide Administered to Obese Subjects.
University of California, Los Angeles
- Location
- Los Angeles, CA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Family, Responsibility, Education, Support, and Health for Food Responsiveness
University of California, San Diego
- Location
- La Jolla, CA + 1 other US site
- Eligibility basics
- Ages 7–12
- RecruitingHealthy volunteers
Thermogenenic Responses to Fasting and Overfeeding in Women
University of Colorado, Denver
- Location
- Aurora, CO
- Eligibility basics
- Ages 18–65 · Women only
- RecruitingHealthy volunteersPhase 3
Food Prescriptions to Promote Affordable Diets
Kaiser Permanente
- Location
- Pasadena, CA
- Eligibility basics
- Ages 2+
- RecruitingHealthy volunteers
Personalized Responses to Dietary Composition Trial 3
Zoe Global Limited
- Location
- Needham, MA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Puberty, Diabetes, and the Kidneys, When Eustress Becomes Distress (PANTHER Study)
Petter Bjornstad
- Location
- Aurora, CO + 1 other US site
- Eligibility basics
- Ages 8–14
- RecruitingHealthy volunteers
Remote Approaches for Optimizing Weight Loss (Elevate Weight Loss Trial)
The Miriam Hospital
- Location
- Providence, RI
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Increasing Food Literacy in Preschoolers to Reduce Obesity Risk
Penn State University
- Location
- University Park, PA
- Eligibility basics
- Ages 3–6
- RecruitingHealthy volunteersPhase 2
A Novel Obesity Prevention Program for High-Risk Infants in Primary Care
Children's Hospital Medical Center, Cincinnati
- Location
- Cincinnati, OH
- Eligibility basics
- Ages 0 mo+
- RecruitingHealthy volunteers
Lifestyle Intervention for Healthy Change
Augusta University
- Location
- Augusta, GA
- Eligibility basics
- Ages 18–40
- RecruitingHealthy volunteers
More Outside Your Door: a Diet/physical Activity Intervention to Decrease Risk of Obesity in Alaska Native Preschoolers
Alaska Native Tribal Health Consortium
- Location
- Anchorage, AK
- Eligibility basics
- Ages 3–5
- RecruitingHealthy volunteers
Longitudinal Multi-Omic Profiles to Reveal Mechanisms of Obesity-Mediated Insulin Resistance
Stanford University
- Location
- Stanford, CA
- Eligibility basics
- Ages 35–65
- RecruitingHealthy volunteers
Obesity, Insulin Resistance, and PASC: Persistent SARS-CoV-2
Stanford University
- Location
- Palo Alto, CA
- Eligibility basics
- Ages 18–80
- RecruitingHealthy volunteersPhase 2
Tirzepatide: Reversal of Lipotoxicity and Adipose Tissue Dysfunction in Humans With Overweight/Obesity
Stanford University
- Location
- Palo Alto, CA
- Eligibility basics
- Ages 18–70
- RecruitingHealthy volunteers
A Culturally-relevant Micronutrient-dense Plant-rich (mNDPR) Dietary Intervention for Native Americans
Northern Arizona University
- Location
- Flagstaff, AZ
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Health Effects of Grain Foods in Adults
Purdue University
- Location
- West Lafayette, IN
- Eligibility basics
- Ages 21–60
- RecruitingHealthy volunteers
Research Framework Exploring Sleep Health
Scripps Translational Science Institute
- Location
- La Jolla, CA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersPhase 4
Cardiometabolic Consequences of the Loss of Ovarian Function
University of Colorado, Denver
- Location
- Aurora, CO
- Eligibility basics
- Ages 20–45 · Women only
- RecruitingHealthy volunteers
Triage Survey for Cardiovascular, Obesity, and Related Endocrine Trial Eligibility
Brooklyn Clinical Research
- Location
- Brooklyn, NY
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
A Pilot Factorial Trial of an Integrated Lifestyle Intervention
University of Colorado, Denver
- Location
- Aurora, CO
- 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.