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7,120 recruiting studies with US sites, from the official ClinicalTrials.gov registry (refreshed Oct 26, 2026). No sign-up needed.
Most recently updated studies · page 148 of 297
- RecruitingHealthy volunteers
How Animal and Plant Protein Shakes Change the Body's Nutrient and Health Responses
University of Pittsburgh
- Location
- Pittsburgh, PA
- Eligibility basics
- Ages 18–65
- RecruitingHealthy volunteersPhase 4
The Effect of Tirzepatide on Menopausal Vasomotor Symptoms and Biological Aging in Post-menopausal Women With Obesity
Mayo Clinic
- Location
- Jacksonville, FL
- Eligibility basics
- Ages 46–60 · Women only
- RecruitingHealthy volunteersPhase 2
Impact of Smell Testing on Health Outcomes
Monell Chemical Senses Center
- Location
- Philadelphia, PA
- Eligibility basics
- Ages 7+
- RecruitingHealthy volunteers
Carbon Dioxide Administration and Brain Waste Clearance
Andrew Mayer
- Location
- Albuquerque, NM
- Eligibility basics
- Ages 18–82
- RecruitingHealthy volunteers
Olfactory Transcranial Focused Ultrasound
Medical University of South Carolina
- Location
- Charleston, SC
- Eligibility basics
- Ages 18–65
- RecruitingHealthy volunteers
fMRI Studies of Memory and Perception
Florida State University
- Location
- Tallahassee, FL
- Eligibility basics
- Ages 18–35
- RecruitingHealthy volunteers
Masticatory Muscle Activity Using a 24-Hour Wearable Device
Midwestern University
- Location
- Downers Grove, IL
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Dominantly Inherited Alzheimer Network (DIAN)
Washington University School of Medicine
- Location
- Jacksonville, FL + 6 other US sites
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Diaphragmatic Hernia Research & Exploration, Advancing Molecular Science
Columbia University
- Location
- Chicago, IL + 10 other US sites
- Eligibility basics
- Any age listed
- RecruitingHealthy volunteers
Influence of Brain Oscillation-Dependent TMS on Motor Function
National Institute of Neurological Disorders and Stroke (NINDS)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 18–120
- RecruitingHealthy volunteers
Technical and Translational Development of Cardiovascular Magnetic Resonance (CMR) Imaging
National Heart, Lung, and Blood Institute (NHLBI)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 7–100
- RecruitingHealthy volunteers
Data Collection Study of Pediatric and Adolescent Gynecology Conditions
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 0 mo–100
- RecruitingHealthy volunteers
GENESIS: Genotype Guided - Natriuretic Peptides - Cardiometabolic Health Study
University of Alabama at Birmingham
- Location
- Birmingham, AL
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Metabolic and Functional Consequences of Aging in Health and Disease
Texas A&M University
- Location
- College Station, TX
- Eligibility basics
- Ages 50+
- RecruitingHealthy volunteersPhase 2
Cannabis' Impact on Alcohol Consumption
Brown University
- Location
- Providence, RI
- Eligibility basics
- Ages 21–50
- RecruitingHealthy volunteers
MyHand-SCI: An Active Hand Orthosis for Spinal Cord Injury
Columbia University
- Location
- New York, NY
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Efficacy of mHealth Applications in Weight Management in a Population Affected by Overweight or Obesity
San Diego State University
- Location
- San Diego, CA
- Eligibility basics
- Ages 18–64
- RecruitingHealthy volunteers
Strong Teens for Healthy Schools Change Club: A Civic Engagement Approach to Improving Physical Activity and Healthy Eating Environments
Texas A&M University
- Location
- Dallas, TX
- Eligibility basics
- Ages 8+
- RecruitingHealthy volunteersPhase 4
Impact of Preoperative Opioid-free Multimodal Analgesia on Time to Trial of Void in Ambulatory Urogynecologic Surgeries
Northwell Health
- Location
- Bay Shore, NY
- Eligibility basics
- Any age listed · Women only
- RecruitingHealthy volunteers
Acoustic Waveform Respiratory Evaluation
Indiana University
- Location
- Indianapolis, IN + 1 other US site
- Eligibility basics
- Ages 8–70
- RecruitingHealthy volunteersPhase 2/Phase 3
Food-Body-Mind Intervention (16 Weeks)
Michigan State University
- Location
- Jackson, MI
- Eligibility basics
- Ages 3–5
- RecruitingHealthy volunteers
Exercise Effects on the Neurobiology Underlying Stress-related Eating Behaviors in Veterans
VA Office of Research and Development
- Location
- Aurora, CO
- Eligibility basics
- Ages 18–75
- RecruitingHealthy volunteers
Education & Mentorship of Advanced Practice Providers to Increase Community-based Research Within the NCORP Network, COACH-APP Trial
Wake Forest University Health Sciences
- Location
- Newark, DE + 42 other US sites
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
The Impact of Biological Mechanisms of Aging on Response Variability to Resistance Training in Older Adults
Mayo Clinic
- Location
- Boston, MA + 1 other US site
- Eligibility basics
- Ages 65+
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