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 volunteersPhase 1Overnight stay mentioned
A Study to Investigate the Relative Bioavailability and Safety of Different Oral Formulations of Elecoglipron in Healthy Participants
AstraZeneca
- Location
- Glendale, CA + 1 other US site
- Eligibility basics
- Ages 18–55
- RecruitingHealthy volunteersPhase 1Overnight stay mentioned
Developing Biomarkers of Dietary Intake: Dose Dependent Measurement of Sugar Intake
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
- Location
- Phoenix, AZ
- Eligibility basics
- Ages 18–65
- RecruitingHealthy volunteersPhase 1/Phase 2
Phase 1/2 Study of OPK-88006 in Healthy and Presumed MASH Participants
OPKO Health, Inc.
- Location
- Miami, FL
- Eligibility basics
- Ages 18–75
- RecruitingHealthy volunteersPhase 1/Phase 2
A Trial to Learn if ALN-PNP is Safe and Well Tolerated in Healthy Adults and Adult Participants With Metabolic Dysfunction-Associated Steatotic Liver Disease (MASLD)
Regeneron Pharmaceuticals
- Location
- Los Angeles, CA + 4 other US sites
- Eligibility basics
- Ages 18–75
- RecruitingHealthy volunteersOvernight stay mentioned
Eating to Adjust the Timing System
Brigham and Women's Hospital
- Location
- Boston, MA
- Eligibility basics
- Ages 18–45
- RecruitingHealthy volunteersOvernight stay mentioned
Clinical and Laboratory Study of Methylmalonic Acidemia
National Human Genome Research Institute (NHGRI)
- Location
- Bethesda, MD + 1 other US site
- Eligibility basics
- Ages 1 mo–115
- RecruitingHealthy volunteersOvernight stay mentioned
Natural History, Physiology, Microbiome and Biochemistry Studies of Propionic Acidemia
National Human Genome Research Institute (NHGRI)
- Location
- Bethesda, MD + 1 other US site
- Eligibility basics
- Ages 1 mo–100
- RecruitingHealthy volunteersOvernight stay mentioned
Can Food Timing Reduce Your Diabetes Risk?
Brigham and Women's Hospital
- Location
- Boston, MA
- Eligibility basics
- Ages 18–45
- RecruitingHealthy volunteersPhase 1
Use of Pulsatile Intravenous FSH to Mitigate Reprometabolic Syndrome
University of Colorado, Denver
- Location
- Aurora, CO
- Eligibility basics
- Ages 19–37 · Women only
- RecruitingHealthy volunteersOvernight stay mentioned
Urinary Vitamin C Loss in Diabetic Subjects
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 18–65
- RecruitingHealthy volunteersPhase 1
The Gut - PRO Study
University of Wisconsin, Madison
- Location
- Madison, WI
- Eligibility basics
- Ages 60+
- RecruitingHealthy volunteersEarly Phase 1
LpD3.5 Intervention Study in Older Adults- LISA-I Trial
University of South Florida
- Location
- Tampa, FL
- Eligibility basics
- Ages 60+
- RecruitingHealthy volunteersPhase 1
Human Models of Selective Insulin Resistance: Alpelisib, Part I
Columbia University
- Location
- New York, NY
- Eligibility basics
- Ages 18–70
- RecruitingHealthy volunteersOvernight stay mentioned
Harnessing Macrophage Lysosomal Lipid Metabolism in Obesity
Bettina Mittendorfer
- Location
- Columbia, MO
- Eligibility basics
- Ages 18–70
- RecruitingHealthy volunteersOvernight stay mentioned
Harnessing Macrophage Lysosomal Lipid Metabolism in Obesity (ATM)
Bettina Mittendorfer
- Location
- Columbia, MO
- Eligibility basics
- Ages 18–70
- RecruitingHealthy volunteersPhase 1
Safety, Tolerability, and Bioeffects of Alirocumab in Non-treatment Seeking Heavy Drinkers
National Institute on Alcohol Abuse and Alcoholism (NIAAA)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 21–65
- RecruitingHealthy volunteersPhase 1
The Effects of Dietary Supplementation on Serum Protein Glycosylation
University of California, Davis
- Location
- Sacramento, CA
- Eligibility basics
- Ages 18–45
- RecruitingHealthy volunteersPhase 1
TREAD: Time Restricted Eating Intervention for Alzheimer's Disease
University of California, San Diego
- Location
- San Diego, CA
- Eligibility basics
- Ages 60+
- RecruitingHealthy volunteersEarly Phase 1
Dietary and Topical Magnesium Replacement or Supplementation in Patients With Lymphoma
Mayo Clinic
- Location
- Rochester, MN
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersEarly Phase 1
The Kidney's Response to Exercise in Heat, and the Impact of Vitamin B3 on This Response
Beth Israel Deaconess Medical Center
- Location
- Boston, MA + 1 other US site
- Eligibility basics
- Ages 18–45
- RecruitingHealthy volunteersOvernight stay mentioned
Nighttime Synchrony of Your Nutrition and Circadian Health
University of Utah
- Location
- Salt Lake City, UT
- Eligibility basics
- Ages 18–35
- RecruitingHealthy volunteersOvernight stay mentioned
Dietary Intervention to Mitigate Adverse Consequences of Night Work
Brigham and Women's Hospital
- Location
- Boston, MA
- Eligibility basics
- Ages 18–45
- RecruitingHealthy volunteersPhase 1
Increasing Affordable Fruits and Vegetables for Families With Food Insecurity
University of South Carolina
- Location
- Columbia, SC
- Eligibility basics
- Ages 2–10
- RecruitingHealthy volunteersPhase 1/Phase 2
Comparison of the Short-Term Effect of Dietary Carbohydrate Restriction Versus Exogenous Ketone Supplementation on Myocardial Glucose Suppression and Timing to Achieve a State of Ketosis Using FDG PET/CT Serial Imaging
University of Pennsylvania
- Location
- Philadelphia, PA
- Eligibility basics
- Ages 18+
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.