Study type
Nutrition and metabolism studies recruiting now
Nutrition and metabolism studies look at diets, supplements, metabolic conditions and fatty liver disease. Some are run by universities with controlled meals.
361 recruiting studiesSource: ClinicalTrials.gov, refreshed October 26, 2026How we list studies
Studies
- RecruitingHealthy volunteers
Fully Automated High-Throughput Quantitative MRI of the Liver
University of Wisconsin, Madison
- Location
- Madison, WI
- Eligibility basics
- Ages 7+
- RecruitingHealthy volunteers
Effects of Beef-Forward Ready-to-Eat Meals on Recovery Following Simulated Fire Suppression Activities
Sam Houston State University
- Location
- Fort Worth, TX + 1 other US site
- Eligibility basics
- Ages 18–60
- RecruitingHealthy volunteers
Impact of Vitamin D Supplements on Mental Health and Milk Composition in Mothers Living in Idaho
University of Idaho
- Location
- Coeur d'Alene, ID + 1 other US site
- Eligibility basics
- Ages 18–64 · Women only
- RecruitingHealthy volunteers
Pulse Education and Children
Florida State University
- Location
- Tallahassee, FL
- Eligibility basics
- Ages 6–13
- RecruitingHealthy volunteers
Effects of Pork Protein on Recovery Following Simulated Fireground Activity
Sam Houston State University
- Location
- Fort Worth, TX + 1 other US site
- Eligibility basics
- Ages 18–60
- RecruitingHealthy volunteers
Prenatal Education on Environmental Exposures During Pregnancy Study (PEEPS)
The University of Texas Medical Branch, Galveston
- Location
- Galveston, TX + 1 other US site
- Eligibility basics
- Ages 18+ · Women only
- RecruitingHealthy volunteersPhase 4
The Impact of Dietary Salt on the Severity of Eczema
University of California, San Francisco
- Location
- San Francisco, CA + 1 other US site
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
The Efficacy of Vitamin D Supplementation to Sustain Performance Outcomes
Walter Reed Army Institute of Research (WRAIR)
- Location
- Silver Spring, MD
- Eligibility basics
- Ages 18–40
- RecruitingHealthy volunteers
Cottonseed Oil Versus Matched PUFA Effects
University of Georgia
- Location
- Athens, GA
- Eligibility basics
- Ages 25–75
- RecruitingHealthy volunteers
Intermittent Cottonseed Oil Consumption
University of Georgia
- Location
- Athens, GA
- Eligibility basics
- Ages 25–75
- RecruitingHealthy volunteersPhase 4
The Impact of Salt Intake on Sodium in the Skin and Inflammatory Skin Disease
University of California, San Francisco
- Location
- San Francisco, CA + 1 other US site
- Eligibility basics
- Ages 18+
- 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
Daily Upgrade Trial
University of North Carolina, Chapel Hill
- Location
- Chapel Hill, NC
- Eligibility basics
- Ages 25–45 · Women only
- 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
Transforming Maternal Mental Health Care
University of Utah
- Location
- Salt Lake City, UT
- Eligibility basics
- Ages 18–45 · Women only
- 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
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
Diet Quality Pilot Intervention in LA Safety Net
University of California, Los Angeles
- Location
- Los Angeles, CA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Assessing the Short-Term Effects of Multi-Fiber Supplementation on Gut Health
Brown University
- Location
- Providence, RI
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Measurement and Determinants of Diet Quality in Older Adults
University of California, Los Angeles
- Location
- Los Angeles, CA
- Eligibility basics
- Ages 60+
Who these studies look for
Expect limits on supplements, alcohol and diet changes during the study, and sometimes a set BMI range.
Matching a page like this one never means you qualify. Each research team decides eligibility at screening.
Questions
Are meals provided in nutrition studies?
Sometimes. Controlled-feeding studies provide food; others ask you to follow a plan at home. The listing summary and the study team explain what is involved.