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ClinicalTrials.gov public records Last synced Oct 22, 2026, 4:39 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 120 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Natural Environment Clear all
Recruiting No phase listed Observational Accepts healthy volunteers

Women s Health Awareness Community Resiliency, Environmental Action and Collaborations for Health (REACH)

NCT04983251
View directory record Official record
Conditions
Mental Health
Interventions
Not listed
Lead sponsor
National Institute of Environmental Health Sciences (NIEHS)
NIH
Eligibility
18 Years to 100 Years · Female only
Enrollment
700 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
1
States / cities
Research Triangle Park, North Carolina
Source: ClinicalTrials.gov public record
Updated Oct 22, 2026 · Synced Oct 22, 2026, 4:39 PM EDT
Completed No phase listed Observational

Sample Collection Registry for Quality Control of Biological and Environmental Specimens and Assay Development and Testing

NCT01087307
View directory record Official record
Conditions
Exposure
Interventions
Not listed
Lead sponsor
National Institute of Environmental Health Sciences (NIEHS)
NIH
Eligibility
18 Years and older
Enrollment
5,326 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2010
U.S. locations
1
States / cities
Research Triangle Park, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 31, 2026 · Synced Oct 22, 2026, 4:39 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Aggressive Driving and Road Rage: A Driving Simulation Experiment.

NCT03430973
View directory record Official record
Conditions
Aggression
Interventions
Videos, Bumper stickers, Alcohol-related cues, Music, Roadside vegetation, Video game
Behavioral
Lead sponsor
Ohio State University
Other
Eligibility
18 Years and older
Enrollment
85 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2025
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Dec 19, 2025 · Synced Oct 22, 2026, 4:39 PM EDT
Completed Phase 3 Interventional

Cryopreserved Human Umbilical Cord (TTAX01) for Late Stage, Complex Non-healing Diabetic Foot Ulcers (AMBULATE DFU)

NCT04176120
View directory record Official record
Conditions
Diabetic Foot Infection, Non-healing Wound, Non-healing Diabetic Foot Ulcer
Interventions
TTAX01, Standard Care
Biological · Other
Lead sponsor
BioTissue Holdings, Inc
Industry
Eligibility
18 Years and older
Enrollment
220 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2024
U.S. locations
16
States / cities
San Francisco, California • Sylmar, California • Miami, Florida + 13 more
Source: ClinicalTrials.gov public record
Updated Jun 14, 2024 · Synced Oct 22, 2026, 4:39 PM EDT
Completed No phase listed Observational

Patient Perspectives and Doctor Visits

NCT01888913
View directory record Official record
Conditions
Body Weight
Interventions
Not listed
Lead sponsor
National Human Genome Research Institute (NHGRI)
NIH
Eligibility
18 Years to 50 Years · Female only
Enrollment
1,464 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2016
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jun 20, 2024 · Synced Oct 22, 2026, 4:39 PM EDT
Recruiting Not applicable Interventional

Movement Amplification Gait Training to Enhance Walking Balance Post-Stroke

NCT06400186
View directory record Official record
Conditions
Chronic Hemiparetic Stroke
Interventions
High intensity gait training in varying external environments, Treadmill walking in varying external environments
Behavioral
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years to 80 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
2
States / cities
Chicago, Illinois • Hines, Illinois
Source: ClinicalTrials.gov public record
Updated Aug 14, 2026 · Synced Oct 22, 2026, 4:39 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Dietary Intervention for Visceral Adiposity

NCT01350518
View directory record Official record
Conditions
Obesity
Interventions
Benefiber, TrueLemon
Dietary Supplement
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
20 Years to 50 Years · Female only
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2014
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 28, 2018 · Synced Oct 22, 2026, 4:39 PM 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 25, 2025 · Synced Oct 22, 2026, 4:39 PM EDT
Terminated Phase 1Phase 2 Interventional Accepts healthy volunteers

Investigation of Mechanisms of Action in Superpower Glass

NCT04049981
View directory record Official record
Conditions
Autism Spectrum Disorder, Autism
Interventions
Superpower Glass
Device
Lead sponsor
Stanford University
Other
Eligibility
4 Years to 8 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Sep 5, 2023 · Synced Oct 22, 2026, 4:39 PM EDT
Recruiting Not applicable Interventional

Community Connections Through Native Hawaiian Cultural Values to Strengthen Youth Resilience, Health, and Well-Being

NCT07536256
View directory record Official record
Conditions
Chronic Disease, Adolescent Asthma, Obesity & Overweight, Youth Mental Health, Youth Obesity, Prediabetes, Asthma
Interventions
Community Referral to Kaiona Programs
Behavioral
Lead sponsor
Waianae Coast Comprehensive Health Center
Other
Eligibility
12 Years to 25 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
Waianae, Hawaii
Source: ClinicalTrials.gov public record
Updated Apr 17, 2026 · Synced Oct 22, 2026, 4:39 PM EDT
Completed Not applicable Interventional

Indoor Daylight Photo Dynamic Therapy for Actinic Keratosis

NCT03805737
View directory record Official record
Conditions
Actinic Keratosis
Interventions
Amulez and sunlight, Amulez and red light treatment
Other
Lead sponsor
Dartmouth-Hitchcock Medical Center
Other
Eligibility
18 Years and older
Enrollment
43 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Lebanon, New Hampshire
Source: ClinicalTrials.gov public record
Updated Jan 20, 2022 · Synced Oct 22, 2026, 4:39 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Personalized Environment and Genes Study

NCT00341237
View directory record Official record
Conditions
Diabetes, Heart Disease, Asthma
Interventions
Not listed
Lead sponsor
National Institute of Environmental Health Sciences (NIEHS)
NIH
Eligibility
18 Years to 120 Years
Enrollment
25,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2010
U.S. locations
2
States / cities
Chapel Hill, North Carolina • Research Triangle Park, North Carolina
Source: ClinicalTrials.gov public record
Updated Sep 16, 2026 · Synced Oct 22, 2026, 4:39 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Send-In Sample Collection for Comprehensive Analyses of Innate and Adaptive Immune Responses During Acute COVID-19 and Convalescence

NCT04582903
View directory record Official record
Conditions
COVID-19 Infection
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
1 Day to 99 Years
Enrollment
5,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2031
U.S. locations
1
States / cities
Rockville, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 7, 2026 · Synced Oct 22, 2026, 4:39 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Cannabidiol Effects on Blood Alcohol Level and Intoxication

NCT06105138
View directory record Official record
Conditions
Alcohol Use Disorder
Interventions
200mg Cannabidiol oral solution, 30mg Cannabidiol oral solution, Placebo
Dietary Supplement
Lead sponsor
Colorado State University
Other
Eligibility
21 Years to 60 Years
Enrollment
37 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Fort Collins, Colorado
Source: ClinicalTrials.gov public record
Updated Oct 23, 2024 · Synced Oct 22, 2026, 4:39 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Devaluing Foods to Change Eating Behavior

NCT03557710
View directory record Official record
Conditions
Overweight and Obesity, Cancer
Interventions
Devaluing energy-dense foods for cancer-control
Behavioral
Lead sponsor
University of Oregon
Other
Eligibility
18 Years to 60 Years
Enrollment
253 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2023
U.S. locations
1
States / cities
Eugene, Oregon
Source: ClinicalTrials.gov public record
Updated Aug 14, 2023 · Synced Oct 22, 2026, 4:39 PM EDT
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 18, 2018 · Synced Oct 22, 2026, 4:39 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Alcohol Impaired Driving: From the Laboratory to the Natural Environment

NCT03846050
View directory record Official record
Conditions
Drinking and Driving
Interventions
BAC feedback/warning, No BAC feedback/warning
Behavioral
Lead sponsor
University of Missouri-Columbia
Other
Eligibility
21 Years to 35 Years
Enrollment
230 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2024
U.S. locations
1
States / cities
Columbia, Missouri
Source: ClinicalTrials.gov public record
Updated Jul 18, 2024 · Synced Oct 22, 2026, 4:39 PM EDT
Completed Not applicable Interventional

CBTI-CS: A Novel Cognitive-Behavioral Treatment for Insomnia in Cancer Survivors

NCT02756390
View directory record Official record
Conditions
Insomnia
Interventions
CBTI-CS, Sleep Hygiene, CBTI-CS via Telehealth
Behavioral
Lead sponsor
Dana-Farber Cancer Institute
Other
Eligibility
18 Years and older
Enrollment
56 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 11, 2018 · Synced Oct 22, 2026, 4:39 PM EDT
Completed Not applicable Interventional

COgnitive Intervention to Restore Attention Using Nature Environment

NCT04485507
View directory record Official record
Conditions
Heart Failure, Cognitive Dysfunction
Interventions
Nature-VR, Urban-VR
Other
Lead sponsor
Indiana University
Other
Eligibility
21 Years and older
Enrollment
74 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Apr 17, 2024 · Synced Oct 22, 2026, 4:39 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Exploring Virtual Reality Adventure Training Exergaming

NCT05563805
View directory record Official record
Conditions
Physical Activity, Sedentary Behavior, Depression, Cognitive Function, Post Traumatic Stress Disorder, Quality of Life, Anxiety
Interventions
Virtual Reality-based physical activity intervention
Device
Lead sponsor
The University of Texas at Arlington
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2027
U.S. locations
1
States / cities
Arlington, Texas
Source: ClinicalTrials.gov public record
Updated Jun 1, 2026 · Synced Oct 22, 2026, 4:39 PM EDT
Not yet recruiting Not applicable Interventional

Stroke Training to Advance Balance During Locomotor Experiences (STABLE) Trial

NCT07802470
View directory record Official record
Conditions
Stroke
Interventions
High intensity gait training in Movement Amplification Environment, High intensity gait training in natural environment
Other
Lead sponsor
Northwestern University
Other
Eligibility
18 Years to 80 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2031
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Sep 3, 2026 · Synced Oct 22, 2026, 4:39 PM EDT
Completed No phase listed Observational

New Techniques for Using a Saline Wash as a Diagnostic Tool for Pneumocystis Pneumonia

NCT00342589
View directory record Official record
Conditions
Pneumocystis Infection, Infection, Pneumonia, Pneumocystis, Lung Disease, Fungal, Mycoses
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
3 Years to 99 Years
Enrollment
1,015 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 1999
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 16, 2026 · Synced Oct 22, 2026, 4:39 PM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

Natural History of Pain After Shoulder Arthroplasty Conducted With Multimodal Analgesia

NCT03021096
View directory record Official record
Conditions
TSA, Bruise, Pain, Postoperative
Interventions
Surveys
Other
Lead sponsor
Hospital for Special Surgery, New York
Other
Eligibility
18 Years to 80 Years
Enrollment
108 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 4, 2025 · Synced Oct 22, 2026, 4:39 PM EDT
Terminated Early Phase 1 Interventional Results available

Fermented Wheat Germ Extract in Women With Ovarian Cancer

NCT02411565
View directory record Official record
Conditions
Ovarian Cancer
Interventions
Fermented Wheat Germ Extract (FWGE), Placebo, Standard of Care: Planned Surgery, Quality of Life (QoL) Surveys: FACT-O
Drug · Other
Lead sponsor
H. Lee Moffitt Cancer Center and Research Institute
Other
Eligibility
18 Years and older · Female only
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Jan 23, 2019 · Synced Oct 22, 2026, 4:39 PM EDT