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ClinicalTrials.gov public records Last synced May 21, 2026, 11:38 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Environmental Exposures Clear all
Active, not recruiting No phase listed Observational Accepts healthy volunteers
View directory record Official record
Conditions
Hearing Loss, Noise-Induced, Hearing Loss, Tinnitus
Interventions
Not listed
Lead sponsor
Apple Inc.
Industry
Eligibility
18 Years and older
Enrollment
300,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2029
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Mar 18, 2026 · Synced May 21, 2026, 11:38 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Temperature, Exercise, Diabetes Mellitus, Type 2
Interventions
30 minutes outdoors
Behavioral
Lead sponsor
Virginia Polytechnic Institute and State University
Other
Eligibility
19 Years to 65 Years · Female only
Enrollment
180 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Aug 5, 2018 · Synced May 21, 2026, 11:38 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available
View directory record Official record
Conditions
Health Knowledge, Attitudes, Practice
Interventions
In-clinic report-back
Behavioral
Lead sponsor
Silent Spring Institute
Other
Eligibility
18 Years to 55 Years · Female only
Enrollment
163 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 23, 2026 · Synced May 21, 2026, 11:38 PM EDT
Completed Not applicable Interventional Results available
View directory record Official record
Conditions
Dry Eye Syndromes
Interventions
Intranasal Tear Neurostimulator
Device
Lead sponsor
Allergan
Industry
Eligibility
22 Years and older
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
1
States / cities
Andover, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 30, 2020 · Synced May 21, 2026, 11:38 PM EDT
Completed No phase listed Observational Accepts healthy volunteers
View directory record Official record
Conditions
Male Infertility, Testicular Diseases, Urologic and Male Genital Diseases, Lead Poisoning
Interventions
Not listed
Lead sponsor
National Institute of Environmental Health Sciences (NIEHS)
NIH
Eligibility
21 Years to 55 Years · Male only
Enrollment
400 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2002 – 2007
U.S. locations
3
States / cities
Los Angeles, California • Manhasset, New York • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 14, 2015 · Synced May 21, 2026, 11:38 PM EDT
Recruiting No phase listed Observational
View directory record Official record
Conditions
Asthma
Interventions
Not listed
Lead sponsor
National Institute of Environmental Health Sciences (NIEHS)
NIH
Eligibility
18 Years to 60 Years
Enrollment
400 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2030
U.S. locations
1
States / cities
Research Triangle Park, North Carolina
Source: ClinicalTrials.gov public record
Updated May 6, 2026 · Synced May 21, 2026, 11:38 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Environmental Exposure
Interventions
Nutrition
Other
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years to 80 Years
Enrollment
400 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jan 28, 2026 · Synced May 21, 2026, 11:38 PM EDT
Completed No phase listed Observational Accepts healthy volunteers
View directory record Official record
Conditions
Type 1 Diabetes Mellitus
Interventions
Not listed
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
0 Months to 4 Months
Enrollment
8,667 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2025
U.S. locations
4
States / cities
Denver, Colorado • Gainesville, Florida • Augusta, Georgia + 1 more
Source: ClinicalTrials.gov public record
Updated Sep 21, 2025 · Synced May 21, 2026, 11:38 PM EDT
Active, not recruiting Not applicable Interventional
View directory record Official record
Conditions
Financial Stress, Economic Problems, Environmental Exposure, Health Behavior, Health, Subjective, Mental Health Wellness 1
Interventions
Financial Well-being Interventions, Place-based Interventions
Other
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
571 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 11, 2026 · Synced May 21, 2026, 11:38 PM EDT
Completed Not applicable Interventional Results available
View directory record Official record
Conditions
Dry Eye Syndromes
Interventions
Intranasal Tear Neurostimulator
Device
Lead sponsor
Allergan
Industry
Eligibility
22 Years and older
Enrollment
185 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016
U.S. locations
3
States / cities
Louisville, Kentucky • Memphis, Tennessee • Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jan 30, 2020 · Synced May 21, 2026, 11:38 PM EDT
Not yet recruiting Phase 2 Interventional Accepts healthy volunteers
View directory record Official record
Conditions
PFAS, Environmental Exposures, Occupational Exposure to Chemicals, Military Exposure, Burn Pit Exposure, Forever Chemicals, Hyperlipidemias, Hypercholesterolemia, Mixed Dyslipidemia, Hyperlipidemia (E.G., Hypercholesterolemia)
Interventions
Colesevelam, Placebo
Drug
Lead sponsor
University of Rhode Island
Other
Eligibility
25 Years to 65 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2029
U.S. locations
2
States / cities
Louisville, Kentucky • Augusta, Maine
Source: ClinicalTrials.gov public record
Updated May 17, 2026 · Synced May 21, 2026, 11:38 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Exposure to Secondhand Smoke in Neonatal Infants
Interventions
Motivational Interviewing plus Incentives, Conventional Care (CC)
Behavioral
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
Not listed
Enrollment
360 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2018
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated May 13, 2018 · Synced May 21, 2026, 11:38 PM EDT
Active, not recruiting Not applicable Interventional
View directory record Official record
Conditions
Financial Stress, Economic Problems, Environmental Exposure, Health Behavior, Health, Subjective, Mental Health Wellness
Interventions
Assigned Interventions
Other
Lead sponsor
University of Pennsylvania
Other
Eligibility
3 Years to 19 Years
Enrollment
221 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 9, 2026 · Synced May 21, 2026, 11:38 PM EDT
Active, not recruiting No phase listed Observational Accepts healthy volunteers
View directory record Official record
Conditions
Age-related Macular Degeneration, Age-related Maculopathy
Interventions
Observational-1, Observational-2
Other
Lead sponsor
University of California, Los Angeles
Other
Eligibility
49 Years and older
Enrollment
603 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2027
U.S. locations
2
States / cities
Los Angeles, California • Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Nov 6, 2023 · Synced May 21, 2026, 11:38 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available
View directory record Official record
Conditions
Environmental Exposure, Nasal Inflammation
Interventions
Ozone, Filtered Air, Health and Exposure Tracker (HET)
Other · Device
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 50 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated May 13, 2021 · Synced May 21, 2026, 11:38 PM EDT
Enrolling by invitation Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Rumination
Interventions
Built environment, Natural environment
Other
Lead sponsor
University of South Florida
Other
Eligibility
18 Years and older
Enrollment
95 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Mar 24, 2025 · Synced May 21, 2026, 11:38 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Exposure to Environmental Pollution, Non-occupational
Interventions
Clean air, Ozone
Other
Lead sponsor
Environmental Protection Agency (EPA)
Federal
Eligibility
18 Years to 40 Years
Enrollment
14 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2018
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 29, 2019 · Synced May 21, 2026, 11:38 PM EDT
Completed No phase listed Observational Accepts healthy volunteers
View directory record Official record
Conditions
Covid19
Interventions
Antibody testing
Biological
Lead sponsor
Northwell Health
Other
Eligibility
18 Years and older
Enrollment
40,132 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Great Neck, New York
Source: ClinicalTrials.gov public record
Updated Feb 5, 2023 · Synced May 21, 2026, 11:38 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Environmental Exposure
Interventions
Face-to-Face Meetings, Email Only
Behavioral
Lead sponsor
California Polytechnic State University-San Luis Obispo
Other
Eligibility
18 Years to 50 Years · Female only
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2017
U.S. locations
1
States / cities
San Luis Obispo, California
Source: ClinicalTrials.gov public record
Updated Feb 21, 2018 · Synced May 21, 2026, 11:38 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available
View directory record Official record
Conditions
Mental Health, Stress Disorders, Post-Traumatic, Substance-Related Disorders, Tobacco Use Disorder
Interventions
Integrated Care for Smoking Cessation in PTSD patients, Standard of Care
Behavioral
Lead sponsor
US Department of Veterans Affairs
Federal
Eligibility
18 Years to 80 Years
Enrollment
943 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2009
U.S. locations
11
States / cities
Tuscaloosa, Alabama • San Diego, California • Washington D.C., District of Columbia + 8 more
Source: ClinicalTrials.gov public record
Updated May 4, 2014 · Synced May 21, 2026, 11:38 PM EDT
Completed No phase listed Observational Accepts healthy volunteers
View directory record Official record
Conditions
Physical Activity, Sedentary Lifestyle
Interventions
Not listed
Lead sponsor
University of California, San Diego
Other
Eligibility
35 Years to 80 Years
Enrollment
601 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2017
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Jun 18, 2019 · Synced May 21, 2026, 11:38 PM EDT
Completed No phase listed Observational Accepts healthy volunteers
View directory record Official record
Conditions
Brain Cancer, Acute Lymphoblastic Leukemia
Interventions
Not listed
Lead sponsor
Georgetown University
Other
Eligibility
Up to 18 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2006
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Jul 22, 2007 · Synced May 21, 2026, 11:38 PM EDT
Completed Not applicable Interventional
View directory record Official record
Conditions
Infant Environmental Tobacco Smoke Exposure
Interventions
Motivational Interviewing intervention, Usual Care, Usual Care - Reduced Measurement
Behavioral
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
12 Years and older
Enrollment
144 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jan 5, 2016 · Synced May 21, 2026, 11:38 PM EDT
Recruiting Phase 1Phase 2 Interventional
View directory record Official record
Conditions
Toxicant Exposure, Firefighter, Occupational Exposure to Chemicals
Interventions
Colesevelam, Placebo
Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years and older · Male only
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Apr 23, 2026 · Synced May 21, 2026, 11:38 PM EDT