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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Young Healthy Adults Clear all
Completed Not applicable Interventional Accepts healthy volunteers Results available

Evaluation of Bacillus Subtilis R0179 in Healthy Young Adults

NCT01802151
View directory record Official record
Conditions
Healthy
Interventions
B. subtilis R0179, Placebo
Dietary Supplement
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 50 Years
Enrollment
83 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Dec 16, 2015 · Synced Jul 24, 2026, 4:09 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Study to Assess Safety of an Inactivated H5N1 Influenza Vaccine Administered in GelVac Nasal Powder to Healthy Young Adults

NCT01258062
View directory record Official record
Conditions
Phase 1 Safety Study of GelVac Nasal Powder H5N1 Influenza Vaccine
Interventions
GelVac™ nasal powder H5N1 influenza vaccine., Placebo
Drug
Lead sponsor
Alachua Government Services, Inc.
Industry
Eligibility
18 Years to 49 Years
Enrollment
7 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Feb 1, 2017 · Synced Jul 24, 2026, 4:09 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Effect of Exercise and Heat Stress on Acute Cardiometabolic Adaptations in Healthy Young Adults

NCT06872762
View directory record Official record
Conditions
Exercise, Heat Strain, Control Condition
Interventions
Exercise, Heat strain
Behavioral
Lead sponsor
Northern Arizona University
Other
Eligibility
18 Years to 50 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Flagstaff, Arizona
Source: ClinicalTrials.gov public record
Updated Mar 11, 2025 · Synced Jul 24, 2026, 4:09 AM EDT
Enrolling by invitation Not applicable Interventional Accepts healthy volunteers

Pulmonary and Inflammatory Responses Following Exposure to a Low Concentration of Ozone or Clean Air at Rest

NCT06943989
View directory record Official record
Conditions
Lung Inflammation, Experimental Lung Inflammation
Interventions
Ozone Exposure, Clean air (0.0 ppm ozone)
Other
Lead sponsor
Environmental Protection Agency (EPA)
Federal
Eligibility
18 Years to 35 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 26, 2025 · Synced Jul 24, 2026, 4:09 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Dose-Escalating Trial Using Vero Cell-culture Derived H5N1 +/- Aluminum in Adults

NCT00382980
View directory record Official record
Conditions
Influenza
Interventions
Aluminum hydroxide, Inactivated Vero cell based whole virus influenza A/H5N1, Placebo
Biological · Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 40 Years
Enrollment
308 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2007
U.S. locations
5
States / cities
Stanford, California • Torrance, California • Baltimore, Maryland + 2 more
Source: ClinicalTrials.gov public record
Updated Aug 26, 2010 · Synced Jul 24, 2026, 4:09 AM EDT
Recruiting Phase 2Phase 3 Interventional Accepts healthy volunteers

Dissolved Phase HXe-129 MRI: A Novel Biomarker to Quantify Pulmonary Pathology

NCT06856525
View directory record Official record
Conditions
Electronic Cigarette Related Lung Damage
Interventions
Hyperpolarized xenon 129, Cardiopulmonary Stress Test, Pulmonary Function Test, Chest CT
Drug · Diagnostic Test
Lead sponsor
Y. Michael Shim, MD
Other
Eligibility
18 Years to 35 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2032
U.S. locations
2
States / cities
Durham, North Carolina • Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Mar 16, 2026 · Synced Jul 24, 2026, 4:09 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Text Messages in Preventing Tobacco Use in Young Adults

NCT03457480
View directory record Official record
Conditions
Healthy Subject
Interventions
Computer-Assisted Intervention, Focus Group, Informational Intervention, Survey Administration
Other · Behavioral
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years to 25 Years
Enrollment
781 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2021
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Feb 1, 2021 · Synced Jul 24, 2026, 4:09 AM EDT
Terminated Phase 1 Interventional Results available

A Phase I Study of Quadrivalent Human Papilloma Virus (HPV) (Types 6, 11, 16, 18) Recombinant Vaccine in HIV-Infected and HIV-Negative Pre-Adolescents, Adolescents, and Young Adults

NCT00798265
View directory record Official record
Conditions
Human Immunodeficiency Virus, Human Papillomavirus- 6, 11, 16, 18, Adolescent, Papillomavirus Vaccines
Interventions
Gardasil, Survey
Biological · Behavioral
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
12 Years to 26 Years
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2013
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Nov 19, 2024 · Synced Jul 24, 2026, 4:09 AM EDT
Terminated No phase listed Observational Accepts healthy volunteers

Vaccination Responses in Young and Older Adults

NCT02654704
View directory record Official record
Conditions
Individuality, Healthy, Asthma, Immune System and Related Disorders
Interventions
Pneumococcal Vaccination
Biological
Lead sponsor
Michigan State University
Other
Eligibility
18 Years and older
Enrollment
61 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2020
U.S. locations
1
States / cities
East Lansing, Michigan
Source: ClinicalTrials.gov public record
Updated Jul 28, 2020 · Synced Jul 24, 2026, 4:09 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

H5N1 With or Without Topical Aldara in Healthy Adults

NCT03472976
View directory record Official record
Conditions
Avian Influenza, Influenza Immunisation
Interventions
Aqueous Cream B.P., Imiquimod, Influenza Virus Vaccine, Monovalent A/H5N1 A/Vietnam/1203/04
Other · Drug · Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 49 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Feb 23, 2020 · Synced Jul 24, 2026, 4:09 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

An Evaluation of the Energy Expenditure From Wii Fit Games

NCT01561716
View directory record Official record
Conditions
Healthy Young Adults
Interventions
Wii Fit
Device
Lead sponsor
University of Rochester
Other
Eligibility
20 Years to 35 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Sep 30, 2015 · Synced Jul 24, 2026, 4:09 AM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

Using an AI Mobile Application to Promote Healthy Eating

NCT07108452
View directory record Official record
Conditions
Healthy
Interventions
A mobile application that uses AI to deliver behavioral nudges that encourage healthy food choices., Limited app version for dietary assessment only
Other
Lead sponsor
University of California, Davis
Other
Eligibility
18 Years to 24 Years
Enrollment
114 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
Davis, California
Source: ClinicalTrials.gov public record
Updated Jul 16, 2026 · Synced Jul 24, 2026, 4:09 AM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

Arterial Stiffness in Type I Diabetes Mellitus

NCT02218268
View directory record Official record
Conditions
Arterial Stiffness in Youth With Type 1 Diabetes
Interventions
Pre-meal bolus, No meal bolus
Drug
Lead sponsor
University of Florida
Other
Eligibility
8 Years to 21 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Feb 5, 2017 · Synced Jul 24, 2026, 4:09 AM EDT
Not yet recruiting Not applicable Interventional

Healthy Choices to Reduce Stigma and Improve Self-Management of Alcohol and HIV Among Young Adults

NCT07638618
View directory record Official record
Conditions
HIV, Alcohol Misuse, Stigma
Interventions
Healthy Choices, Time Attention Control
Behavioral · Other
Lead sponsor
Florida State University
Other
Eligibility
18 Years to 29 Years
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2027 – 2029
U.S. locations
1
States / cities
Tallahassee, Florida
Source: ClinicalTrials.gov public record
Updated Jun 9, 2026 · Synced Jul 24, 2026, 4:09 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Normative Data of Brain Network Activation in Adolescents and Young Adults

NCT01460394
View directory record Official record
Conditions
Healthy Controls
Interventions
Not listed
Lead sponsor
ElMindA Ltd
Industry
Eligibility
15 Years to 24 Years
Enrollment
64 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2012
U.S. locations
1
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated Oct 14, 2019 · Synced Jul 24, 2026, 4:09 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Mucosal Immunity Against Neisseria Gonorrhoeae After 4CMenB Vaccination

NCT04722003
View directory record Official record
Conditions
Gonorrhoea
Interventions
Meningococcal Group B Vaccine, Placebo
Biological · Other
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 49 Years
Enrollment
52 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Decatur, Georgia
Source: ClinicalTrials.gov public record
Updated Nov 4, 2024 · Synced Jul 24, 2026, 4:09 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

SMART: A Social and Mobile Weight Control Program for Young Adults

NCT01200459
View directory record Official record
Conditions
Obesity
Interventions
Social/mobile weight loss promotion intervention.
Behavioral
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years to 35 Years
Enrollment
404 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2014
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Dec 7, 2014 · Synced Jul 24, 2026, 4:09 AM EDT
Completed Not applicable Interventional

Healthy Lifestyles After Cancer for Adolescents and Young Adults: A Program to Reduce Cardiovascular Risk Factors

NCT05869604
View directory record Official record
Conditions
Cancer, Cardiovascular Diseases, Weight Management, Pain, Fatigue, Distress, Emotional, Physical Inactivity
Interventions
HEALTHY AYA, Education Control
Behavioral · Other
Lead sponsor
Duke University
Other
Eligibility
18 Years to 39 Years
Enrollment
38 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Mar 30, 2026 · Synced Jul 24, 2026, 4:09 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Support Your Heart, Phase 1

NCT07623733
View directory record Official record
Conditions
Cardio Vascular Disease, Obesity & Overweight, Physical Activity, Sleep, Diet, Healthy, Nicotine
Interventions
Support Your Heart
Behavioral
Lead sponsor
George Washington University
Other
Eligibility
18 Years to 39 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Jul 13, 2026 · Synced Jul 24, 2026, 4:09 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Post-Exercise Cardiovascular Responses Following Energy Drink Consumption

NCT03418077
View directory record Official record
Conditions
QTc Interval
Interventions
Energy Drink, Placebo-control
Dietary Supplement
Lead sponsor
David Grant U.S. Air Force Medical Center
Federal
Eligibility
18 Years to 40 Years
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Travis Air Force Base, California
Source: ClinicalTrials.gov public record
Updated Apr 16, 2020 · Synced Jul 24, 2026, 4:09 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

COSMED K5 Validation and Reliability Study

NCT05145192
View directory record Official record
Conditions
Cardiopulmonary, Exercise
Interventions
COSMED K5 CPET (Cardiopulmonary Exercise Test), ParvoMedics CPET
Device
Lead sponsor
Baylor Research Institute
Other
Eligibility
20 Years to 29 Years
Enrollment
34 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Frisco, Texas
Source: ClinicalTrials.gov public record
Updated Jan 21, 2025 · Synced Jul 24, 2026, 4:09 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Harriet Lane Healthy Futures Program

NCT01575457
View directory record Official record
Conditions
Youth Coaching, Future Planning
Interventions
Career Counseling and Motivational Interviewing
Behavioral
Lead sponsor
Johns Hopkins University
Other
Eligibility
14 Years to 21 Years
Enrollment
202 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2014
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 6, 2015 · Synced Jul 24, 2026, 4:09 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Normative Data of Brain Network Activation in Adolescents and Young Adults

NCT01671761
View directory record Official record
Conditions
Healthy Controls
Interventions
Not listed
Lead sponsor
ElMindA Ltd
Industry
Eligibility
15 Years to 24 Years
Enrollment
43 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2014
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 8, 2015 · Synced Jul 24, 2026, 4:09 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Phase 1 Study of BLB-201 Vaccine in Healthy Young and Older Adults

NCT05281263
View directory record Official record
Conditions
Respiratory Syncytial Virus Infections
Interventions
CPI-RSV-F Vaccine (BLB-201)
Biological
Lead sponsor
Blue Lake Biotechnology Inc.
Industry
Eligibility
18 Years to 75 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
2
States / cities
Cincinnati, Ohio • North Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Dec 20, 2023 · Synced Jul 24, 2026, 4:09 AM EDT