Nutrition & metabolism · California
Nutrition and metabolism studies in California
72 studies have at least one recruiting site in California. Nutrition and metabolism studies look at diets, supplements, metabolic conditions and fatty liver disease. Some are run by universities with controlled meals.
72 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 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 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 volunteers
Efficacy of Qualia Testosterone+ on Testosterone Levels in Adult Males
Qualia Life Sciences
- Location
- Carlsbad, CA
- Eligibility basics
- Ages 28–65 · Men only
- RecruitingHealthy volunteers
The Impact of Qualia Vitamin C+ on Individuals With Suboptimal and Adequate Vitamin C Levels
Qualia Life Sciences
- Location
- Carlsbad, CA
- Eligibility basics
- Ages 25–75
- RecruitingHealthy volunteers
A Randomized Comparison of Stage-Based Care Versus Risk Factor-Based Care for Prevention of Cardiovascular Events
Cleerly, Inc.
- Location
- Beverly Hills, CA + 121 other US sites
- Eligibility basics
- Ages 55+
- RecruitingHealthy volunteers
Multi-strain Probiotic Supplement for Digestive Comfort and Well-being in Healthy Women
Daily Nouri
- Location
- San Francisco, CA
- Eligibility basics
- Ages 25–45 · Women only
- RecruitingHealthy volunteers
An Open-Label, Two-Arm Pilot Study of the Tolerability, Consumer Acceptability, and Exploratory Well-Being Outcomes of a Multi-Ingredient Protein Formula in Two Flavors in Healthy Adults
Qualia Life Sciences
- Location
- Carlsbad, CA
- Eligibility basics
- Ages 21–65
- RecruitingHealthy volunteers
Women's Hormonal and Metabolic Wellbeing Study
Daily Nouri
- Location
- San Francisco, CA
- Eligibility basics
- Ages 18–45 · Women only
- RecruitingHealthy volunteers
Decentralized Study to Evaluate a Dietary Supplement for Episodes of Mild Acute Stress in Healthy People
PLT Health Solutions
- Location
- San Francisco, CA
- Eligibility basics
- Ages 18–60
- RecruitingHealthy volunteers
Evaluation of Gut-Related Well-Being and Mood Effects of a Daily Nutritional Food Ingredient From the Co-Fermentation of Fungal Mycelium (Pleurotus Pulmonarius) and Microalgae (Chlorella Vulgaris)
Koralo GmbH
- Location
- San Francisco, CA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
The Effects of a Nutritional Supplement on Sleep Quality
Athletic Greens International
- Location
- Santa Monica, CA
- Eligibility basics
- Ages 35–65
- RecruitingHealthy volunteers
The Mitopure Challenge to Detect Levels of Urolithin A in Dried Blood Spots
Amazentis SA
- Location
- San Francisco, CA
- Eligibility basics
- Ages 18–80
- RecruitingHealthy volunteers
Prospective Study on Power Prenatal Vitamins for Males on YO Score At-home Sperm Test Results
The Bird and Be Co Inc
- Location
- Encino, CA
- Eligibility basics
- Ages 18–50 · Men only
- RecruitingPhase 3
A Study Evaluating the Efficacy and Safety of Pegozafermin in Participants With MASH and Fibrosis (ENLIGHTEN-Fibrosis)
Hoffmann-La Roche
- Location
- Canoga Park, CA + 121 other US sites
- Eligibility basics
- Ages 18–80
- RecruitingPhase 3
A Study to Evaluate the Efficacy and Safety of Pegozafermin in Participants With Compensated Cirrhosis Due to MASH
Hoffmann-La Roche
- Location
- Camarillo, CA + 112 other US sites
- Eligibility basics
- Ages 18–75
- RecruitingPhase 1
Resmetirom in Patients With MASH and HFpEF
Madrigal Pharmaceuticals, Inc.
- Location
- Oxnard, CA + 4 other US sites
- Eligibility basics
- Ages 18+
- RecruitingPhase 3
A Study Evaluating Efruxifermin in Subjects With Non-Cirrhotic Nonalcoholic Steatohepatitis (NASH)/Metabolic Dysfunction-Associated Steatohepatitis (MASH) and Fibrosis
Akero Therapeutics, Inc
- Location
- Coronado, CA + 131 other US sites
- Eligibility basics
- Ages 18–80
- RecruitingPhase 3
LIVERAGE™: A Study to Test Whether Survodutide Helps People With a Liver Disease Called NASH/MASH Who Have Moderate or Advanced Liver Fibrosis
Boehringer Ingelheim
- Location
- Canoga Park, CA + 154 other US sites
- Eligibility basics
- Ages 18+
- RecruitingPhase 3
LIVERAGE™ - Cirrhosis: A Study to Test Whether Survodutide Helps People With a Liver Disease Called NASH/MASH Who Have Cirrhosis
Boehringer Ingelheim
- Location
- Canoga Park, CA + 123 other US sites
- Eligibility basics
- Ages 18+
- RecruitingPhase 3
OPI-NXYDLD-303 Safety and Efficacy of Phentolamine Ophthalmic Solution in Keratorefractive Surgery Participants With Decreased Mesopic Visual Acuity
Opus Genetics, Inc
- Location
- Glendale, CA + 19 other US sites
- Eligibility basics
- Ages 18+
- RecruitingPhase 2
A Study to Test Whether BI 3802876 is Tolerated in People With Compensated Liver Cirrhosis Due to Metabolic Dysfunction- Associated Steatohepatitis (MASH)
Boehringer Ingelheim
- Location
- Coronado, CA + 18 other US sites
- Eligibility basics
- Ages 18–75
- RecruitingPhase 3
A Study Evaluating Efruxifermin in Subjects With Compensated Cirrhosis Due to NASH/MASH
Akero Therapeutics, Inc
- Location
- Coronado, CA + 130 other US sites
- Eligibility basics
- Ages 18–80
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.