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ClinicalTrials.gov public records Last synced May 21, 2026, 10:53 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: Pollution; Exposure Clear all
Completed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Air Pollution
Interventions
N95 Respirator
Other
Lead sponsor
University Hospitals Cleveland Medical Center
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2023
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Dec 3, 2023 · Synced May 21, 2026, 10:53 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Healthy
Interventions
N-acetylcysteine, ascorbate, Placebo
Drug
Lead sponsor
University of Washington
Other
Eligibility
18 Years to 49 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2010
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jan 15, 2013 · Synced May 21, 2026, 10:53 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Exposure to Pollution, Inhalation of Ozone
Interventions
Ozone exposure, Diesel exhaust, Ozone18, Clean Air
Other
Lead sponsor
Environmental Protection Agency (EPA)
Federal
Eligibility
18 Years to 55 Years
Enrollment
42 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2015
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Jan 17, 2016 · Synced May 21, 2026, 10:53 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Exposure to Pollution
Interventions
Clean Air, PM2.5
Other
Lead sponsor
Environmental Protection Agency (EPA)
Federal
Eligibility
18 Years to 35 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2020
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Sep 4, 2021 · Synced May 21, 2026, 10:53 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Pollution; Exposure
Interventions
Educational Programming
Other
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Apr 21, 2019 · Synced May 21, 2026, 10:53 PM EDT
Suspended Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Pollution; Exposure, Glucose Intolerance, Glycemic Control
Interventions
Avoidance Education
Behavioral
Lead sponsor
Bastyr University
Other
Eligibility
18 Years to 100 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2025
U.S. locations
1
States / cities
Kenmore, Washington
Source: ClinicalTrials.gov public record
Updated Sep 26, 2024 · Synced May 21, 2026, 10:53 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 55 Years
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2015
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 9, 2015 · Synced May 21, 2026, 10:53 PM EDT
Completed No phase listed Observational
View directory record Official record
Conditions
Environmental Exposure
Interventions
Informational Report
Other
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
15 Years to 99 Years
Enrollment
96 participants
Timeline
2021 – 2022
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Jan 22, 2023 · Synced May 21, 2026, 10:53 PM EDT
Completed No phase listed Observational Accepts healthy volunteers
View directory record Official record
Conditions
Health Effects of Ambient Air Pollution
Interventions
omega-3 fatty acids
Dietary Supplement
Lead sponsor
U.S. EPA Human Studies Facility
Federal
Eligibility
25 Years to 55 Years
Enrollment
62 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2019
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated May 9, 2022 · Synced May 21, 2026, 10:53 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Cardiovascular Effects
Interventions
Diesel Exhaust, Filtered Air, Terazosin, placebo
Other · Drug
Lead sponsor
University of Washington
Other
Eligibility
18 Years to 49 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2015
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Aug 2, 2015 · Synced May 21, 2026, 10:53 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Air Pollution
Interventions
exposure to particulate matter with N 95 facemask, exposure to particulate matter with no face mask
Other
Lead sponsor
University of Michigan
Other
Eligibility
18 Years to 65 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated May 1, 2019 · Synced May 21, 2026, 10:53 PM EDT
Recruiting Not applicable Interventional
View directory record Official record
Conditions
Blood Pressure
Interventions
Active PAC, Sham PAC
Device
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years to 100 Years
Enrollment
440 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2028
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Sep 30, 2025 · Synced May 21, 2026, 10:53 PM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Cognitive Function Decline, Air Pollution Exposure, Respiratory Inflammation
Interventions
Clean Indoor Air Exposure (Control), Exposure to Cooking-Generated Ultrafine Particles and Gases
Other
Lead sponsor
University of Illinois at Chicago
Other
Eligibility
18 Years and older
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Dec 30, 2025 · Synced May 21, 2026, 10:53 PM EDT
Completed Not applicable Interventional
View directory record Official record
Conditions
PreDiabetes
Interventions
PAC with HEPA filter intact, PAC with HEPA filter removed
Device
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years to 85 Years
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated May 11, 2026 · Synced May 21, 2026, 10:53 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 33 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2017
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 25, 2017 · Synced May 21, 2026, 10:53 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Physical Inactivity, Pollution; Exposure
Interventions
Active exercise
Behavioral
Lead sponsor
State University of New York at Buffalo
Other
Eligibility
35 Years to 55 Years
Enrollment
6 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Apr 21, 2026 · Synced May 21, 2026, 10:53 PM EDT
Enrolling by invitation Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Pollution; Exposure, Neurodevelopmental Disorders
Interventions
MRI task
Other
Lead sponsor
New York State Psychiatric Institute
Other
Eligibility
6 Months to 11 Years
Enrollment
182 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2028
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Feb 11, 2026 · Synced May 21, 2026, 10:53 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Pollution; Exposure, Hypertension, Pollution Related Respiratory Disorder
Interventions
Solar lighting system
Other
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 65 Years · Female only
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 6, 2025 · Synced May 21, 2026, 10:53 PM EDT
Suspended Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Pollution; Exposure, Smoke Inhalation, Exposure to Pollution
Interventions
Cigarette Smoke, Clean Air and Clean Clothing/Sham exposure
Other
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years to 50 Years
Enrollment
66 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2024
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Aug 27, 2023 · Synced May 21, 2026, 10:53 PM EDT
Enrolling by invitation No phase listed Observational Accepts healthy volunteers
View directory record Official record
Conditions
Air Pollution, Pollution; Exposure, Nutrition, Healthy
Interventions
Not listed
Lead sponsor
Environmental Protection Agency (EPA)
Federal
Eligibility
25 Years to 70 Years
Enrollment
82 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 19, 2024 · Synced May 21, 2026, 10:53 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Respiratory Tract Diseases, Cardiovascular Diseases
Interventions
DIY portable air cleaner with a highly effective filter, DIY portable air cleaner with sham filtration
Other
Lead sponsor
Environmental Protection Agency (EPA)
Federal
Eligibility
18 Years and older
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
Fresno, California
Source: ClinicalTrials.gov public record
Updated Oct 26, 2023 · Synced May 21, 2026, 10:53 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Sleep, Pollution; Exposure, Cough
Interventions
CARDIO® salmon oil
Dietary Supplement
Lead sponsor
Hofseth Biocare ASA
Industry
Eligibility
18 Years to 70 Years
Enrollment
131 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Jan 9, 2025 · Synced May 21, 2026, 10:53 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available
View directory record Official record
Conditions
Air Pollution
Interventions
Air filtration and building envelop modifications
Other
Lead sponsor
UConn Health
Other
Eligibility
40 Years to 75 Years
Enrollment
77 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
Farmington, Connecticut
Source: ClinicalTrials.gov public record
Updated Sep 27, 2023 · Synced May 21, 2026, 10:53 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Air Pollution
Interventions
Clean Air, Ozone
Other
Lead sponsor
Rutgers, The State University of New Jersey
Other
Eligibility
18 Years to 40 Years
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
1
States / cities
Piscataway, New Jersey
Source: ClinicalTrials.gov public record
Updated Dec 16, 2025 · Synced May 21, 2026, 10:53 PM EDT