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Showing 1–19 of 19 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Environmental Enteropathy Clear all
Completed No phase listed Observational Accepts healthy volunteers

Study of Gulf War Illness (GWI) by Comparing GWI and Healthy Veterans

NCT00810225
View directory record Official record
Conditions
Gulf War Illness, Persian Gulf War Syndrome
Interventions
Not listed
Lead sponsor
Georgetown University
Other
Eligibility
Not listed
Enrollment
516 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2011
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Jun 17, 2018 · Synced Jul 22, 2026, 4:03 PM EDT
Completed No phase listed Observational

LOTRONEX® in Severe Diarrhea-Predominant Irritable Bowel Syndrome (IBS-D)

NCT01257477
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
Not listed
Lead sponsor
Prometheus Laboratories
Industry
Eligibility
18 Years to 65 Years · Female only
Enrollment
400 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
67
States / cities
Tuscaloosa, Alabama • Scottsdale, Arizona • Little Rock, Arkansas + 60 more
Source: ClinicalTrials.gov public record
Updated Apr 3, 2013 · Synced Jul 22, 2026, 4:03 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Proteomics of Cerebrospinal Fluid in Chronic Fatigue Syndrome

NCT00810329
View directory record Official record
Conditions
Chronic Fatigue Syndrome, Fibromyalgia, Gulf War Illness, Multiple Chemical Sensitivity, Interstitial Cystitis, Irritable Bowel Syndrome
Interventions
Not listed
Lead sponsor
Georgetown University
Other
Eligibility
21 Years to 65 Years
Enrollment
160 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2011
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Feb 24, 2014 · Synced Jul 22, 2026, 4:03 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Population-Based Patient-Centric Care: Comprehensive Preventive Cancer Screening Using Health IT

NCT01372527
View directory record Official record
Conditions
Breast Cancer, Colorectal Cancer, Cervical Cancer
Interventions
TopCare: Use of provider knowledge vs. automated system
Other
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
21 Years to 75 Years
Enrollment
103,870 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2013
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 2, 2014 · Synced Jul 22, 2026, 4:03 PM EDT
Completed Phase 4 Interventional Results available

Impact of Oral Antibiotic Treatment on C. Difficile

NCT02057198
View directory record Official record
Conditions
C. Difficile, Diarrhea, Enterocolitis
Interventions
Fidaxomicin, Metronidazole, Vancomycin
Drug
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Oct 1, 2019 · Synced Jul 22, 2026, 4:03 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 1, 2026 · Synced Jul 22, 2026, 4:03 PM EDT
Enrolling by invitation No phase listed Observational Accepts healthy volunteers

Natural History Study of Early Life Exposures in Agriculture (ELEA)

NCT07328516
View directory record Official record
Conditions
Prostate Cancer, Leukemia, Breast Cancer, Melanoma, Colorectal Cancer
Interventions
Not listed
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years to 99 Years
Enrollment
64,277 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2030
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 21, 2026 · Synced Jul 22, 2026, 4:03 PM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Feasibility Study to Assess a Trans-nasal Intestinal Potential Difference Probe

NCT04565821
View directory record Official record
Conditions
Inflammatory Disease, Permeability; Increased, Crohn Disease, Inflammatory Bowel Diseases, Environmental Enteropathy
Interventions
IPD Probe via TNIT
Device
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 60 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2028
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 21, 2025 · Synced Jul 22, 2026, 4:03 PM EDT
Not listed No phase listed Observational

Prognostic Molecular and Environmental Factors in High-Risk Colon Cancer Patients

NCT00354705
View directory record Official record
Conditions
Colon Cancer
Interventions
Questionnaire
Behavioral
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
14 Years and older
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2020
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated May 9, 2019 · Synced Jul 22, 2026, 4:03 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Genetic and Environmental Risk Assessment for Colorectal Cancer in Healthy Participants

NCT00087360
View directory record Official record
Conditions
Colorectal Cancer
Interventions
counseling intervention, physiologic testing, evaluation of cancer risk factors
Other · Procedure
Lead sponsor
Fox Chase Cancer Center
Other
Eligibility
50 Years to 74 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2003 – 2007
U.S. locations
4
States / cities
Bethesda, Maryland • Philadelphia, Pennsylvania • Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jul 10, 2013 · Synced Jul 22, 2026, 4:03 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of EED on Zn Absorption and Retention in Children From a MNP

NCT02758444
View directory record Official record
Conditions
Environmental Enteric Dysfunction, Zinc Deficiency
Interventions
Micronutrient Powder (MNP) + 15 mg Zn, MNP + 10 mg Zn, MNP + 5 mg Zn, MNP without Zn
Dietary Supplement
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Months to 24 Months
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2019
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Jul 4, 2019 · Synced Jul 22, 2026, 4:03 PM EDT
Enrolling by invitation Not applicable Interventional Accepts healthy volunteers

OCT Guided Trans Nasal Imaging of the Small Intestine in Adults

NCT04984447
View directory record Official record
Conditions
Environmental Enteric Dysfunction
Interventions
TNIB Catheter
Device
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 60 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2029
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 21, 2025 · Synced Jul 22, 2026, 4:03 PM EDT
Recruiting No phase listed Observational

Celiac Disease Genomic Environmental Microbiome and Metabolomic Study

NCT02061306
View directory record Official record
Conditions
Celiac Disease
Interventions
Not listed
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
Up to 6 Months
Enrollment
500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2027
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 16, 2026 · Synced Jul 22, 2026, 4:03 PM EDT
Completed Phase 2 Interventional Results available

Treatment Study of Carnosine Versus Placebo in Gulf War Illness (GWI)

NCT00810368
View directory record Official record
Conditions
Persian Gulf Syndrome
Interventions
Carnosine, Placebo
Drug
Lead sponsor
Georgetown University
Other
Eligibility
34 Years to 82 Years
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2012
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Jun 27, 2019 · Synced Jul 22, 2026, 4:03 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Effects of EED on Zn Absorption and Retention in Children From a Standard Dose

NCT02760095
View directory record Official record
Conditions
Environmental Enteric Dysfunction, Zinc Deficiency, Vitamin A Deficiency
Interventions
3 mg zinc sulfate supplement, 0.5 mg of 13C10-retinyl-acetate
Drug
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Months to 24 Months
Enrollment
46 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2017
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Jun 30, 2019 · Synced Jul 22, 2026, 4:03 PM EDT
Completed No phase listed Observational

Survey of ColoRectal Cancer Education and Environment Needs

NCT00229554
View directory record Official record
Conditions
Colorectal Neoplasms, Mass Screening, Patient Compliance
Interventions
Not listed
Lead sponsor
US Department of Veterans Affairs
Federal
Eligibility
50 Years to 75 Years
Enrollment
4,644 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Apr 6, 2015 · Synced Jul 22, 2026, 4:03 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Genetic Epidemiology Risk Assessment Program or Usual Care in Colorectal Cancer Screening for Healthy Participants

NCT00478309
View directory record Official record
Conditions
Colorectal Cancer, Healthy, no Evidence of Disease
Interventions
counseling intervention, educational intervention
Other
Lead sponsor
Fox Chase Cancer Center
Other
Eligibility
50 Years and older
Enrollment
697 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2007
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 2, 2016 · Synced Jul 22, 2026, 4:03 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 13, 2026 · Synced Jul 22, 2026, 4:03 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Pregnant Women With and Without Crohns Disease to Explore the Role of Plastics and Toxins in Intestinal Inflammation

NCT06001450
View directory record Official record
Conditions
Crohns Disease, Pregnancy, Inflammatory Bowel Disease
Interventions
Not listed
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
18 Years and older
Enrollment
46 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 6, 2026 · Synced Jul 22, 2026, 4:03 PM EDT