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ClinicalTrials.gov public records Last synced Oct 30, 2026, 2:56 PM EDT

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

Showing 217–240 of 823 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Environment Clear all
Completed No phase listed Observational

PCOS Twin Study - Environmental Factors in the Development of Polycystic Ovary Syndrome, Phase 2

NCT00444288
View directory record Official record
Conditions
Polycystic Ovary Syndrome
Interventions
Not listed
Lead sponsor
National Institute of Environmental Health Sciences (NIEHS)
NIH
Eligibility
18 Years and older · Female only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 2, 2017 · Synced Oct 30, 2026, 2:56 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Reducing Head Impact Exposure in Hawaii High School Football

NCT04020874
View directory record Official record
Conditions
Head Trauma, Cognitive Change, Confidence, Self, Sports Injuries in Children
Interventions
HuTT-2x, HuTT-4x
Behavioral
Lead sponsor
University of Massachusetts, Lowell
Other
Eligibility
14 Years to 19 Years
Enrollment
496 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2023
U.S. locations
1
States / cities
Honolulu, Hawaii
Source: ClinicalTrials.gov public record
Updated Dec 5, 2023 · Synced Oct 30, 2026, 2:56 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

mHealth App for Changing Alcohol Use in Alaska Native American Indian People

NCT05326438
View directory record Official record
Conditions
Alcohol Use Disorder
Interventions
CIRCLE mHealth app
Behavioral
Lead sponsor
Southcentral Foundation
Other
Eligibility
21 Years and older
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Anchorage, Alaska
Source: ClinicalTrials.gov public record
Updated May 23, 2023 · Synced Oct 30, 2026, 2:56 PM EDT
Completed No phase listed Observational

Asthma in the Delta Region of Arkansas: Characterization of Disease and Impact of Environmental Factors

NCT00590304
View directory record Official record
Conditions
Asthma
Interventions
Not listed
Lead sponsor
Arkansas Children's Hospital Research Institute
Other
Eligibility
4 Years to 17 Years
Enrollment
116 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2015
U.S. locations
1
States / cities
Little Rock, Arkansas
Source: ClinicalTrials.gov public record
Updated Sep 12, 2017 · Synced Oct 30, 2026, 2:56 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

hsCRP Clinical Inflammation Marker for Human Bisphenol A Food Contamination

NCT04600765
View directory record Official record
Conditions
Inflammation
Interventions
hsCRP serum measurement of inflammation
Diagnostic Test
Lead sponsor
Center for Research on Environmental Chemicals in Humans
Other
Eligibility
60 Years to 70 Years · Male only
Enrollment
1 participant
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
Sonoma, California
Source: ClinicalTrials.gov public record
Updated Jan 27, 2021 · Synced Oct 30, 2026, 2:56 PM EDT
Completed No phase listed Observational

National Children s Health Study

NCT00852904
View directory record Official record
Conditions
Infant, Child Development, Biological Samples
Interventions
Not listed
Lead sponsor
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
NIH
Eligibility
18 Years and older
Enrollment
9,942 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2020
U.S. locations
4
States / cities
Chicago, Illinois • Bethesda, Maryland • Rockville, Maryland
Source: ClinicalTrials.gov public record
Updated Jun 1, 2020 · Synced Oct 30, 2026, 2:56 PM EDT
Completed Not applicable Interventional

Pragmatic Randomized Trial for Arterial Catheters in the Critical Care Environment

NCT05411315
View directory record Official record
Conditions
Mechanical Ventilation Complication, Arterial Thrombosis, Limb Ischemia, Shock, Hypotension, Bloodstream Infection, Vasopressor Adverse Reaction, Renal Failure
Interventions
Restricted-use of arterial catheter, Standard-use of arterial catheter
Other
Lead sponsor
Dartmouth-Hitchcock Medical Center
Other
Eligibility
18 Years and older
Enrollment
700 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Lebanon, New Hampshire
Source: ClinicalTrials.gov public record
Updated Feb 26, 2024 · Synced Oct 30, 2026, 2:56 PM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Doulas as Environmental Educators and Partners Study

NCT06032143
View directory record Official record
Conditions
Health Knowledge, Attitudes, Practice
Interventions
Online educational phthalate course, Control environmental education, Phthalate conversation, Environmental exposures conversation
Behavioral
Lead sponsor
Harvard School of Public Health (HSPH)
Other
Eligibility
Not listed
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 15, 2026 · Synced Oct 30, 2026, 2:56 PM EDT
Recruiting Not applicable Interventional

The Food Environment, Microbial Cysteine Metabolism, and Cancer Disparities

NCT07086833
View directory record Official record
Conditions
Colorectal Cancer
Interventions
Low Cysteine Diet, High Cysteine Diet
Other
Lead sponsor
Purdue University
Other
Eligibility
45 Years to 75 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
2
States / cities
Indianapolis, Indiana • West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated May 14, 2026 · Synced Oct 30, 2026, 2:56 PM EDT
Recruiting Early Phase 1 Interventional

Piloting Virtual Reality Environments to Treat PTSD in Healthcare Workers

NCT04887116
View directory record Official record
Conditions
Posttraumatic Stress Disorder
Interventions
Virtual Reality Exposure Therapy
Behavioral
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Sep 16, 2026 · Synced Oct 30, 2026, 2:56 PM EDT
Recruiting Not applicable Interventional

Physical Therapy for Montana Children With NMD Using Hippotherapy and the Equine Environment

NCT06887647
View directory record Official record
Conditions
Neuromotor Impairments
Interventions
Physical Therapy Using Hippotherapy and the Equine Environment, Standard Play-Based Physical Therapy
Other
Lead sponsor
University of Montana
Other
Eligibility
6 Years to 17 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Missoula, Montana
Source: ClinicalTrials.gov public record
Updated May 14, 2026 · Synced Oct 30, 2026, 2:56 PM EDT
Enrolling by invitation Not applicable Interventional

Strategy for Management of Patients With Hereditary Cancer Syndromes (HCS) in a Rural Environment

NCT07381985
View directory record Official record
Conditions
Hereditary Cancer Syndromes, BRCA1 Hereditary Breast and Ovarian Cancer Syndrome, Lynch Syndrome
Interventions
Longitudinal Cancer Genetics Follow-Up Program
Behavioral
Lead sponsor
University of Vermont Medical Center
Other
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated Feb 2, 2026 · Synced Oct 30, 2026, 2:56 PM EDT
Terminated No phase listed Observational Accepts healthy volunteers

Clean Beauty in Newark, NJ

NCT07216898
View directory record Official record
Conditions
Health Disparities, Education
Interventions
Chemical Exposure Prevention
Behavioral
Lead sponsor
Rutgers, The State University of New Jersey
Other
Eligibility
18 Years and older
Enrollment
38 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Newark, New Jersey
Source: ClinicalTrials.gov public record
Updated Jun 25, 2026 · Synced Oct 30, 2026, 2:56 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Community-Level Daytime Sleepiness: Social-Environmental Determinants, Consequences, and Impact of Sleep Apnea

NCT04176042
View directory record Official record
Conditions
Daytime Sleepiness
Interventions
Track 1, Track 2
Behavioral
Lead sponsor
University of Arizona
Other
Eligibility
20 Years to 60 Years
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Tucson, Arizona
Source: ClinicalTrials.gov public record
Updated Dec 21, 2020 · Synced Oct 30, 2026, 2:56 PM EDT
Enrolling by invitation No phase listed Observational Accepts healthy volunteers

Precure Targeted Accrual and Rapid Growth in Enrollment Trial Study

NCT07756320
View directory record Official record
Conditions
Exposure, Environmental, Genetic Predisposition
Interventions
Not listed
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
100,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2035
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Aug 17, 2026 · Synced Oct 30, 2026, 2:56 PM EDT
Recruiting Not applicable Interventional

THREAT: Testing Harms Related to Exposure to Allergenic and Epithelial Toxins

NCT07271381
View directory record Official record
Conditions
Allergic, Inflammatory
Interventions
Environmental Exposures, Control Exposures
Other
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 80 Years
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2031
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 11, 2026 · Synced Oct 30, 2026, 2:56 PM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Thirty Million Words Home Visiting

NCT02216032
View directory record Official record
Conditions
Language Environments of Children of Low-socioeconomic Status
Interventions
TMW Curriculum, Nutrition Curriculum
Other
Lead sponsor
University of Chicago
Other
Eligibility
13 Months to 16 Months
Enrollment
206 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2026
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Apr 8, 2026 · Synced Oct 30, 2026, 2:56 PM EDT
Not listed No phase listed Observational

Finding Correlations Between Asthma Exacerbation, Physiological Measurements and Environmental Factors

NCT04845932
View directory record Official record
Conditions
Asthma
Interventions
Not listed
Lead sponsor
North Carolina State University
Other
Eligibility
14 Years to 18 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
Raleigh, North Carolina
Source: ClinicalTrials.gov public record
Updated Mar 27, 2024 · Synced Oct 30, 2026, 2:56 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Role of the Toxic Metal Cadmium in the Mechanism Producing Infertility With a Varicocele

NCT00044369
View directory record Official record
Conditions
Varicocele, Male Infertility, Hypospermatogenesis, Non-Obstructive Azoospermia
Interventions
Varicocele repair
Procedure
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
2000 – 2005
U.S. locations
2
States / cities
Camden, New Jersey • Manhasset, New York
Source: ClinicalTrials.gov public record
Updated Sep 4, 2006 · Synced Oct 30, 2026, 2:56 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Dietary Factors and Disfluency: A Look Into Food Allergies and Other Environmental Triggers Associated With Variations in Severity of Vocal Cord Tension.

NCT02547051
View directory record Official record
Conditions
Vocal Cord Tension, Dysfluency Developmental
Interventions
Food Allergy Testing and Elimination Diet
Other
Lead sponsor
The R2 Institute
Other
Eligibility
16 Years to 75 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2022
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Oct 11, 2017 · Synced Oct 30, 2026, 2:56 PM EDT
Completed Not applicable Interventional

Internet-based Interacting Together Everyday, Recovery After Childhood TBI (I-InTERACT)--RRTC

NCT01214694
View directory record Official record
Conditions
Traumatic Brain Injury
Interventions
Internet-based Interacting Together Everyday: Recovery After Childhood TBI (I-InTERACT), Internet-based-Interacting Together Everyday, Recovery after Childhood TBI Express (I-InTERACT Express), Internet Resources Comparison (IRC)
Behavioral
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
3 Years to 9 Years
Enrollment
117 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2015
U.S. locations
5
States / cities
Aurora, Colorado • Cincinnati, Ohio • Cleveland, Ohio + 1 more
Source: ClinicalTrials.gov public record
Updated Mar 8, 2016 · Synced Oct 30, 2026, 2:56 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Reducing Pesticide Exposures in Child Care Centers

NCT03319927
View directory record Official record
Conditions
Children, Only, Risk Reduction, Environmental Exposure
Interventions
Changes in pesticide exposure, IPM Practices, Educational Workshops
Behavioral
Lead sponsor
University of California, San Francisco
Other
Eligibility
3 Years to 75 Years
Enrollment
987 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2024
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Feb 17, 2026 · Synced Oct 30, 2026, 2:56 PM EDT
Enrolling by invitation Not applicable Interventional

Optimizing Bilateral and Single-sided-deafness Cochlear Implants for Functioning in Complex Auditory Environments

NCT06305039
View directory record Official record
Conditions
Hearing Loss, Hearing Loss, Sensorineural, Cochlear Hearing Loss
Interventions
Diagnostic tests of cochlear implant or acoustic hearing function, Targeted aural rehabilitation of the poorer performing ear
Diagnostic Test · Behavioral
Lead sponsor
University of Maryland, College Park
Other
Eligibility
18 Years to 85 Years
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2028
U.S. locations
2
States / cities
Bethesda, Maryland • College Park, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 28, 2025 · Synced Oct 30, 2026, 2:56 PM EDT
Completed No phase listed Observational

Consortium On Risk for Early-onset Parkinson's Disease (CORE PD)

NCT00104585
View directory record Official record
Conditions
Parkinson's Disease
Interventions
Not listed
Lead sponsor
Columbia University
Other
Eligibility
18 Years to 50 Years
Enrollment
750 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2014
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 24, 2024 · Synced Oct 30, 2026, 2:56 PM EDT