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Showing 1–24 of 810 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Preventative Health Clear all
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Relapse Prevention With Varenicline

NCT00944554
View directory record Official record
Conditions
Recurrence, Smoking Cessation, Substance-Related Disorders
Interventions
Varenicline, Placebo
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 75 Years
Enrollment
104 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2011
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 2, 2017 · Synced Jul 22, 2026, 8:49 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Promoting Employee Health Through The Worksite Food Environment

NCT02660086
View directory record Official record
Conditions
Weight, Food Choice, Nutrition Intake
Interventions
Personalized nutrition feedback
Behavioral
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
21 Years to 75 Years
Enrollment
602 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2020
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Nov 30, 2021 · Synced Jul 22, 2026, 8:49 PM EDT
Completed Phase 3 Interventional Results available

Low Doses of Aspirin in the Prevention of Preeclampsia

NCT04070573
View directory record Official record
Conditions
Preeclampsia
Interventions
acetylsalicylic acid
Drug
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
18 Years to 60 Years · Female only
Enrollment
400 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2025
U.S. locations
2
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 12, 2025 · Synced Jul 22, 2026, 8:49 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Challenge!, a Health Promotion/ Obesity Prevention Program for Teens

NCT00746083
View directory record Official record
Conditions
Overweight
Interventions
Challenge!
Behavioral
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
11 Years to 16 Years
Enrollment
235 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2001 – 2007
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 15, 2019 · Synced Jul 22, 2026, 8:49 PM EDT
Completed Phase 1 Interventional

Mental Health Services for Foster and Adopted Children

NCT00056303
View directory record Official record
Conditions
Problem Behaviors, Attention Deficit Hyperactivity Disorder, Depression
Interventions
Attachment and Biobehavioral Catch-up, Developmental Education for Families
Behavioral
Lead sponsor
University of Delaware
Other
Eligibility
20 Months to 36 Months
Enrollment
220 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2016
U.S. locations
1
States / cities
Newark, Delaware
Source: ClinicalTrials.gov public record
Updated Dec 19, 2016 · Synced Jul 22, 2026, 8:49 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

DOT Diary Optimization Pilot: A Pilot Study to Optimize the DOT Diary App to Measure PrEP Adherence

NCT03387462
View directory record Official record
Conditions
Adherence, Medication, Risk Behavior, Pre-Exposure Prophylaxis, HIV Prevention
Interventions
Emtricitabine / Tenofovir Disoproxil Oral Tablet, DOT Diary mobile app
Drug · Other
Lead sponsor
Public Health Foundation Enterprises, Inc.
Other
Eligibility
18 Years to 35 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
2
States / cities
San Francisco, California • Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Oct 26, 2021 · Synced Jul 22, 2026, 8:49 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Community Influences Transitions in Youth Health (CITY) Health II - Center for the Study of Community Health

NCT04320186
View directory record Official record
Conditions
Sexually Transmitted Diseases, HIV Infections
Interventions
Entertainment education, video
Behavioral · Other
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years to 25 Years
Enrollment
334 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2020
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Apr 9, 2023 · Synced Jul 22, 2026, 8:49 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Resveratrol for the Prevention of Bone Loss in Postmenopausal Women

NCT06250283
View directory record Official record
Conditions
Low Bone Mass
Interventions
Resveratrol, Placebo
Dietary Supplement
Lead sponsor
University of Delaware
Other
Eligibility
Female only
Enrollment
52 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
Newark, Delaware
Source: ClinicalTrials.gov public record
Updated May 12, 2026 · Synced Jul 22, 2026, 8:49 PM EDT
Enrolling by invitation Not applicable Interventional Accepts healthy volunteers

Study of a Diabetes Prevention Patient Activation Clinical Decision Support Tool

NCT06358261
View directory record Official record
Conditions
PreDiabetes, Lifestyle, Healthy, Activation, Patient
Interventions
Diabetes Prevention Patient Activation Clinical Decision Support Tool
Behavioral
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2027
U.S. locations
1
States / cities
Lutherville, Maryland
Source: ClinicalTrials.gov public record
Updated Jun 7, 2026 · Synced Jul 22, 2026, 8:49 PM EDT
Enrolling by invitation Not applicable Interventional

Optimizing and Advancing SBIRT in Schools

NCT06206161
View directory record Official record
Conditions
Adolescent Drinking, Adolescent Substance Use, Risk Behavior, Health
Interventions
Indicated Prevention, Clinical Staff, Selective Prevention, Expanded Paraprofessional Workforce
Behavioral
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
14 Years to 19 Years
Enrollment
21,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Nov 25, 2025 · Synced Jul 22, 2026, 8:49 PM EDT
Enrolling by invitation Not applicable Interventional

Using the Connect: Game Based Intervention

NCT05927194
View directory record Official record
Conditions
Adolescent Behavior, Contraception, Health Behavior
Interventions
Using the Connect
Behavioral
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
9 Years to 15 Years
Enrollment
1,400 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Feb 19, 2025 · Synced Jul 22, 2026, 8:49 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Mobile-health (mHealth) Intervention to Support HIV Self-testing and PrEP Uptake Among Young Men Who Have Sex With Men

NCT04865341
View directory record Official record
Conditions
Human Immunodeficiency Virus
Interventions
IMB, Information-Only Control
Behavioral
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
17 Years to 24 Years · Male only
Enrollment
118 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Apr 30, 2026 · Synced Jul 22, 2026, 8:49 PM EDT
Completed Not applicable Interventional

Diabetes Risk Reduction Through Eat, Walk, Sleep and Medication Therapy Management for Depressed Cambodians

NCT02502929
View directory record Official record
Conditions
Diabetes, Depression
Interventions
Social Services, Lifestyle, Lifestyle Plus Medication Therapy Management
Behavioral
Lead sponsor
UConn Health
Other
Eligibility
35 Years to 75 Years
Enrollment
182 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2020
U.S. locations
3
States / cities
Farmington, Connecticut • West Hartford, Connecticut • Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Feb 4, 2021 · Synced Jul 22, 2026, 8:49 PM EDT
Completed Not applicable Interventional Results available

Intervening in Diabetes With Healthy Eating, Activity, and Linkages To Healthcare - The I-D-HEALTH Study

NCT01435603
View directory record Official record
Conditions
Diabetes Mellitus, Hyperglycemia, Obesity, Glucose Metabolism Disorders, Metabolic Diseases, Endocrine System Diseases, Overnutrition, Nutrition Disorders, Overweight, Body Weight, Signs and Symptoms
Interventions
Standard Lifestyle Advice, Advice Plus Lifestyle Intervention
Behavioral
Lead sponsor
Northwestern University
Other
Eligibility
18 Years and older
Enrollment
331 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2016
U.S. locations
2
States / cities
Chicago, Illinois • Evanston, Illinois
Source: ClinicalTrials.gov public record
Updated Apr 26, 2018 · Synced Jul 22, 2026, 8:49 PM EDT
Not listed Not applicable Interventional

The Healthy Lifestyles Passport Program: a Nutrition Education Program to Prevent Childhood Obesity

NCT01649115
View directory record Official record
Conditions
Childhood Obesity
Interventions
Healthy Lifestyles Passport
Other
Lead sponsor
Bronx-Lebanon Hospital Center Health Care System
Other
Eligibility
Female only
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2017
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Aug 8, 2012 · Synced Jul 22, 2026, 8:49 PM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

Linking Youth to Pre-Exposure Prophylaxis (PrEP) Services

NCT07438041
View directory record Official record
Conditions
HIV, PrEP, PrEP Adherence
Interventions
LYPS, Enhanced Standard of Care
Other
Lead sponsor
Westat
Other
Eligibility
13 Years to 24 Years
Enrollment
272 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2028
U.S. locations
4
States / cities
San Francisco, California • Atlanta, Georgia • Baltimore, Maryland + 1 more
Source: ClinicalTrials.gov public record
Updated Jul 12, 2026 · Synced Jul 22, 2026, 8:49 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Cradling Our Future Through Family Strengthening Study

NCT00373750
View directory record Official record
Conditions
Substance Abuse, Post-partum Depression, Depression
Interventions
Family Spirit Intervention
Procedure
Lead sponsor
Johns Hopkins Bloomberg School of Public Health
Other
Eligibility
12 Years to 19 Years · Female only
Enrollment
322 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2010
U.S. locations
5
States / cities
Fort Defiance, Arizona • San Carlos, Arizona • Tuba City, Arizona + 2 more
Source: ClinicalTrials.gov public record
Updated Jan 11, 2015 · Synced Jul 22, 2026, 8:49 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

BARDA Securing Anthrax Immunity For the Elderly

NCT03518125
View directory record Official record
Conditions
Anthrax
Interventions
BioThrax, AV7909, Sodium chloride injection USP, 0.9% (placebo)
Biological · Drug
Lead sponsor
Biomedical Advanced Research and Development Authority
Federal
Eligibility
18 Years and older
Enrollment
305 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
4
States / cities
Lenexa, Kansas • Mt. Pleasant, South Carolina • Nashville, Tennessee + 1 more
Source: ClinicalTrials.gov public record
Updated Jul 20, 2020 · Synced Jul 22, 2026, 8:49 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

PrEP Affect Regulation Treatment Innovation

NCT04899024
View directory record Official record
Conditions
Medication Adherence, HIV Prevention, Stimulant Use
Interventions
PARTI, Attention-Control, Contingency Management for PrEP Adherence
Behavioral
Lead sponsor
Florida International University
Other
Eligibility
18 Years and older · Male only
Enrollment
239 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2026
U.S. locations
2
States / cities
San Francisco, California • Miami, Florida
Source: ClinicalTrials.gov public record
Updated May 6, 2026 · Synced Jul 22, 2026, 8:49 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Freshman Sleep and Health Project

NCT03214523
View directory record Official record
Conditions
Preventative Health, Sleep, Weight
Interventions
Sleep Education
Behavioral
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Jan 4, 2018 · Synced Jul 22, 2026, 8:49 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Linking Lives: Building Quality Parent Components for School-Based Health Programs in Middle Schools

NCT00136279
View directory record Official record
Conditions
Smoking, Sexual Behavior
Interventions
Linking Lives parent-based intervention
Behavioral
Lead sponsor
Centers for Disease Control and Prevention
Federal
Eligibility
Not listed
Enrollment
9,510 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2007
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Feb 2, 2009 · Synced Jul 22, 2026, 8:49 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Pilot Study of the Vermont Family Based Approach in Primary Care Pediatrics

NCT04412590
View directory record Official record
Conditions
Psychiatric Disorder
Interventions
Vermont Family Based Approach, Treatment as Usual
Other
Lead sponsor
University of Vermont Medical Center
Other
Eligibility
3 Years to 15 Years
Enrollment
90 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2018
U.S. locations
1
States / cities
Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated Jun 1, 2020 · Synced Jul 22, 2026, 8:49 PM EDT
Recruiting Not applicable Interventional

Feasibility of a Nutrition Intervention for Patients With Prediabetes at a Federally Qualified Health Center

NCT06897982
View directory record Official record
Conditions
Prediabetic State, PreDiabetes, Health Knowledge, Attitudes, Practice, Nutrition, Healthy, Acceptability of Health Care, Obesity Prevention
Interventions
One-arm feasibility pilot of a nutrition intervention to recruit, engage, and retain DPP participants in the safety-net setting in Los Angeles
Behavioral
Lead sponsor
Cedars-Sinai Medical Center
Other
Eligibility
18 Years to 99 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jan 19, 2026 · Synced Jul 22, 2026, 8:49 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Efficacy Trial of Healthy Together ("Juntos")

NCT06489262
View directory record Official record
Conditions
Obesity, Activity, Motor, Diet, Healthy
Interventions
Healthy Together ("Juntos")
Behavioral
Lead sponsor
University of Miami
Other
Eligibility
12 Years to 15 Years
Enrollment
750 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2029
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Mar 22, 2026 · Synced Jul 22, 2026, 8:49 PM EDT