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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Exposure, Environmental Clear all
Completed Not applicable Interventional Results available

Dry Eye Symptom Relief Assessment With Use of TrueTear in a Controlled Adverse Environment

NCT03097614
View directory record Official record
Conditions
Dry Eye, Dry Eye Syndromes
Interventions
TrueTear
Device
Lead sponsor
Oculeve, Inc.
Industry
Eligibility
22 Years and older
Enrollment
57 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017
U.S. locations
1
States / cities
Andover, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 17, 2018 · Synced Sep 24, 2026, 10:42 AM EDT
Completed No phase listed Observational

Indoor Air Quality and Respiratory Morbidity in School-Aged Children With BPD

NCT04107701
View directory record Official record
Conditions
Bronchopulmonary Dysplasia, Chronic Lung Disease of Newborn, Environmental Exposure
Interventions
Not listed
Lead sponsor
Boston Children's Hospital
Other
Eligibility
6 Years to 12 Years
Enrollment
165 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2025
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 5, 2026 · Synced Sep 24, 2026, 10:42 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Environments as Smoking Cues: Imaging Brain Substrates, Developing New Treatments (CameraCue)

NCT01840111
View directory record Official record
Conditions
Smoking, Healthy
Interventions
Quit Smoking 6 hours, Quit Smoking 24 hours
Behavioral
Lead sponsor
Duke University
Other
Eligibility
18 Years to 55 Years
Enrollment
67 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2014
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jan 30, 2017 · Synced Sep 24, 2026, 10:42 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Epigenetic Effect Modifications With Ozone Exposure on Healthy Volunteers

NCT02469428
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 Sep 24, 2026, 10:42 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Interaction Effects of Temperature and Ozone

NCT01981135
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 Sep 24, 2026, 10:42 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Impacts of a Report-back Training Program

NCT06046872
View directory record Official record
Conditions
Behavioral Shift (Researcher Willingness to Report-back)
Interventions
Report-back training
Behavioral
Lead sponsor
Silent Spring Institute
Other
Eligibility
18 Years and older
Enrollment
56 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Newton, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 6, 2026 · Synced Sep 24, 2026, 10:42 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Comparative Study of Three Collagen Membranes: 1 Non-cross-linked and 2 Cross-linked

NCT06944639
View directory record Official record
Conditions
Bone Regeneration
Interventions
Membrane Jason MB GmbH Non-cross-linked (NCL), Membrane BioMend Extend Glutaraldehyde cross-linked, Membrane OSSIX Agile Ribose cross-linked (RCL)
Device
Lead sponsor
Andrea Ravida
Other
Eligibility
18 Years and older
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 5, 2026 · Synced Sep 24, 2026, 10:42 AM EDT
Enrolling by invitation Not applicable Interventional Accepts healthy volunteers

Effect of Environment on the Central and Peripheral Nervous System

NCT06778356
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 Sep 24, 2026, 10:42 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Motivational Incentives to Reduce Secondhand Smoke in NICU Infants' Homes

NCT01726062
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 Sep 24, 2026, 10:42 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Urban Environmental Exposures and Childhood Cancer

NCT00505141
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 Sep 24, 2026, 10:42 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Dismantling the U.S. Social Norm of the "Kids' Food" Archetype (REACH Project)

NCT06266533
View directory record Official record
Conditions
Food Selection, Environmental Exposure
Interventions
Conventional Ultra-processed Food Nutrition Education, Arts-based Ultra-processed Food Nutrition Education
Behavioral
Lead sponsor
Rutgers, The State University of New Jersey
Other
Eligibility
18 Years to 85 Years · Female only
Enrollment
38 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
Newark, New Jersey
Source: ClinicalTrials.gov public record
Updated Jul 23, 2025 · Synced Sep 24, 2026, 10:42 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Developmental Impacts of Microplastics Exposure in Early Life

NCT06107933
View directory record Official record
Conditions
Infant Development, Breast Feeding, Environmental Exposure
Interventions
Observational only
Other
Lead sponsor
Johns Hopkins Bloomberg School of Public Health
Other
Eligibility
18 Years and older · Female only
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jun 8, 2026 · Synced Sep 24, 2026, 10:42 AM EDT
Completed No phase listed Observational

Environmental Exposures, Genetics, and Exhaled Nitric Oxide in Pediatric Asthma

NCT00395096
View directory record Official record
Conditions
Asthma
Interventions
Not listed
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
6 Years to 12 Years
Enrollment
225 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Aug 8, 2021 · Synced Sep 24, 2026, 10:42 AM EDT
Not yet recruiting Phase 2 Interventional Accepts healthy volunteers

Use of Bile Acid Binding Resins to Decrease PFAS Levels Via Colesevalem in Veterans Study

NCT07592858
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 Sep 24, 2026, 10:42 AM EDT
Completed Phase 4 Interventional Results available

Assessment of Alcon's Ocular Image Quantification System

NCT01282138
View directory record Official record
Conditions
Allergic Conjunctivitis
Interventions
Olopatadine hydrochloride, 0.1% ophthalmic solution (Patanol), Dextran 70 0.1%, hydroxypropyl methylcellulose 0.3% (Tears Naturale II)
Drug · Other
Lead sponsor
Alcon Research
Industry
Eligibility
18 Years to 65 Years
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
Fort Worth, Texas
Source: ClinicalTrials.gov public record
Updated Dec 17, 2012 · Synced Sep 24, 2026, 10:42 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Novel Strategies for Reducing Heart Disease Risk Disparities

NCT00143923
View directory record Official record
Conditions
Cardiovascular Diseases
Interventions
Nutrition, Exercise, Stress Management Counseling, usual care
Behavioral · Other
Lead sponsor
University of Pittsburgh
Other
Eligibility
45 Years to 75 Years
Enrollment
2,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003 – 2029
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 9, 2026 · Synced Sep 24, 2026, 10:42 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Human Observatory Study

NCT07646782
View directory record Official record
Conditions
Aging, Mortality, All-cause Mortality, Life Expectancy, Cardiovascular Diseases, Neoplasms, Cognitive Dysfunction, Metabolic Syndrome, Frailty, Musculoskeletal Disease, Neurodegenerative Disease, Dementia, Activities of Daily Living, Health Related Quality of Life, Environmental Exposure, Occupational Diseases, Health Equity, Social Determinants of Health, Physical Disability
Interventions
Multi-Domain Ecological and Clinical Data Linkage
Other
Lead sponsor
Longevity Metrics, Inc.
Industry
Eligibility
18 Years and older
Enrollment
1,000,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2099
U.S. locations
1
States / cities
Boulder, Colorado
Source: ClinicalTrials.gov public record
Updated Sep 7, 2026 · Synced Sep 24, 2026, 10:42 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers Results available

Isradipine Enhancement of Virtual Reality Cue Exposure for Smoking Cessation

NCT03083353
View directory record Official record
Conditions
Nicotine Dependence, Smoking, Cigarette, Smoking Cessation, Smoking Behaviors, Smoking Reduction, Craving
Interventions
Isradipine, Cue Exposure
Drug · Behavioral
Lead sponsor
Jasper A. Smits
Other
Eligibility
18 Years to 65 Years
Enrollment
78 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2023
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Jun 14, 2026 · Synced Sep 24, 2026, 10:42 AM EDT
Active, not recruiting No phase listed Observational Accepts healthy volunteers

Apple Hearing Study

NCT04172766
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 Sep 24, 2026, 10:42 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Monitoring Environmental Exposures and Behavioral Change

NCT05338242
View directory record Official record
Conditions
Risk Reduction, Environmental Exposure, Risk Behavior, Health
Interventions
Real-Time Exposure Feedback
Device
Lead sponsor
University of Utah
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Aug 24, 2026 · Synced Sep 24, 2026, 10:42 AM EDT
Active, not recruiting Phase 3 Interventional

Dry Mouth Toothpaste Study - Comparing Two Toothpastes With Arginine

NCT06365047
View directory record Official record
Conditions
Xerostomia
Interventions
8% Arginine toothpaste, 1000 ppm F toothpaste
Device · Drug
Lead sponsor
Tufts University
Other
Eligibility
18 Years to 80 Years
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 9, 2026 · Synced Sep 24, 2026, 10:42 AM EDT
Not listed No phase listed Observational Accepts healthy volunteers

Study of Genetic Risk Factors for Spina Bifida and Anencephaly

NCT00031122
View directory record Official record
Conditions
Spina Bifida, Anencephaly
Interventions
No Intervention
Other
Lead sponsor
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
NIH
Eligibility
Not listed
Enrollment
1,100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2000 – 2012
U.S. locations
2
States / cities
Philadelphia, Pennsylvania • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Oct 4, 2010 · Synced Sep 24, 2026, 10:42 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Personalized Biomonitoring and Report-back Intervention to Reduce Exposure to Endocrine Disrupting Chemicals

NCT06450951
View directory record Official record
Conditions
Environmental Exposure
Interventions
Urinary EDC metabolite testing, Educational curriculum
Diagnostic Test · Behavioral
Lead sponsor
Million Marker Wellness, Inc.
Industry
Eligibility
18 Years to 44 Years
Enrollment
1,074 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
Reno, Nevada
Source: ClinicalTrials.gov public record
Updated Aug 30, 2026 · Synced Sep 24, 2026, 10:42 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Effect of Environmental Exposures on the Egg Fertilizing Ability of Human Sperm

NCT00012480
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 Sep 24, 2026, 10:42 AM EDT