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Showing 1–24 of 635 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Nutrition Poor Clear all
Completed Phase 1Phase 2 Interventional Results available

A Repeated Study of KRN23 in Adults With X-Linked Hypophosphatemia

NCT01340482
View directory record Official record
Conditions
X-linked Hypophosphatemia
Interventions
KRN23
Drug
Lead sponsor
Kyowa Kirin Co., Ltd.
Industry
Eligibility
18 Years and older
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
5
States / cities
San Francisco, California • New Haven, Connecticut • Indianapolis, Indiana + 2 more
Source: ClinicalTrials.gov public record
Updated Jun 17, 2024 · Synced Sep 3, 2026, 5:06 AM EDT
Completed Phase 1 Interventional

Effects of Vitamin D Replacement in Patients With Primary Hyperparathyroidism (PHPT)

NCT00538720
View directory record Official record
Conditions
Hyperparathyroidism
Interventions
Vitamin D, Four-dimensional computed tomography (4DCT)
Drug · Device
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
21 Years and older
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2018
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Mar 24, 2019 · Synced Sep 3, 2026, 5:06 AM EDT
Completed Not applicable Interventional

Prevention of Malnutrition in Children With Sickle Cell Disease

NCT06397118
View directory record Official record
Conditions
Sickle Cell Disease, Malnutrition
Interventions
Maternal Nutrition Education, Standard Care
Behavioral
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
6 Months to 18 Months
Enrollment
146 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jun 16, 2026 · Synced Sep 3, 2026, 5:06 AM EDT
Completed Not applicable Interventional

Vitamin D, Cardiovascular Disease, and African Americans

NCT01655810
View directory record Official record
Conditions
Vitamin D Deficiency, Type 2 Diabetes Mellitus, Cardiovascular Disease
Interventions
Vitamin D3, Calcium carbonate
Dietary Supplement
Lead sponsor
Washington University School of Medicine
Other
Eligibility
50 Years to 70 Years
Enrollment
86 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2018
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jun 4, 2020 · Synced Sep 3, 2026, 5:06 AM EDT
Completed No phase listed Observational

Outcomes of Septic Shock Patients Treated With a Metabolic Resuscitation Bundle Consisting of Intravenous Hydrocortisone, Ascorbic Acid and Thiamine.

NCT03913468
View directory record Official record
Conditions
Septic Shock, Ascorbic Acid Deficiency
Interventions
Intravenous Ascorbic Acid
Drug
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years to 90 Years
Enrollment
206 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Sep 13, 2021 · Synced Sep 3, 2026, 5:06 AM EDT
Terminated Not applicable Interventional

Vitamin D Supplementation in IBS

NCT03148288
View directory record Official record
Conditions
Irritable Bowel Syndrome, Vitamin D Deficiency, Abdominal Pain
Interventions
Vitamin D, placebo
Dietary Supplement
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
18 Years to 80 Years
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 5, 2020 · Synced Sep 3, 2026, 5:06 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Dose-response Enteral Citrulline for Normal Healthy Volunteers and Surgery Patients

NCT00950976
View directory record Official record
Conditions
Nutritional Deficiency
Interventions
citrulline, Lemonade
Other
Lead sponsor
Société des Produits Nestlé (SPN)
Industry
Eligibility
18 Years and older
Enrollment
14 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2010
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 24, 2012 · Synced Sep 3, 2026, 5:06 AM EDT
Completed Not applicable Interventional Results available

Vitamin D Oral Replacement in Asthma

NCT03686150
View directory record Official record
Conditions
Asthma, Vitamin D Deficiency, Pediatric Obesity
Interventions
Vitamin D3 oral regimen
Dietary Supplement
Lead sponsor
IDeA States Pediatric Clinical Trials Network
Network
Eligibility
6 Years to 17 Years
Enrollment
112 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
15
States / cities
Little Rock, Arkansas • Wilmington, Delaware • Honolulu, Hawaii + 12 more
Source: ClinicalTrials.gov public record
Updated Apr 18, 2023 · Synced Sep 3, 2026, 5:06 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Testing the Feasibility and Preliminary Effect of Summer Camp

NCT04085965
View directory record Official record
Conditions
Childhood Obesity Prevention
Interventions
Boys and Girls Club summer day camp
Behavioral
Lead sponsor
The Miriam Hospital
Other
Eligibility
6 Years to 12 Years
Enrollment
94 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Sep 10, 2019 · Synced Sep 3, 2026, 5:06 AM EDT
Completed Not applicable Interventional

Giving Healthy Meal Kits and Cooking Lessons to Rural Families With Food Insecurity.

NCT06869993
View directory record Official record
Conditions
Food Insecurity, Food Insecurity Among Children, Social Emotional Wellness, Caregiver Stress, Caregiver Distress, Caregiver Mental Health, Family Function, Family Functioning, Nutrition, Child Mental Health
Interventions
Meal Kit plus Mobile Culinary Medicine Education
Dietary Supplement
Lead sponsor
MaineHealth
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025
U.S. locations
1
States / cities
Portland, Maine
Source: ClinicalTrials.gov public record
Updated Feb 18, 2026 · Synced Sep 3, 2026, 5:06 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Comparison of 25-hydroxy Vitamin D Level in Caucasian Women Receiving Vitamin D Supplementation and Not Receiving Supplementation: a Randomized Controlled Trial.

NCT00882505
View directory record Official record
Conditions
Vitamin D Deficiency
Interventions
vitamin D, Placebo
Dietary Supplement · Other
Lead sponsor
Northwestern University
Other
Eligibility
18 Years to 47 Years · Female only
Enrollment
67 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Dec 1, 2021 · Synced Sep 3, 2026, 5:06 AM EDT
Completed Not applicable Interventional

Vitamin D Levels and Vitamin D Education in Geriatric Patients

NCT00273611
View directory record Official record
Conditions
Vitamin D Insufficiency, Vitamin D Deficiency
Interventions
Pharmacist Education about Vitamin D
Behavioral
Lead sponsor
University of Colorado, Denver
Other
Eligibility
65 Years to 89 Years
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2006
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Nov 19, 2013 · Synced Sep 3, 2026, 5:06 AM EDT
Not listed Not applicable Interventional

Vitamin D in Pediatric Asthma: a Randomized Controlled Open-label Pilot Trial

NCT02054975
View directory record Official record
Conditions
Asthma, Vitamin D Deficiency
Interventions
Vitamin D2 + vitamin D3, Vitamin D3
Drug
Lead sponsor
Nationwide Children's Hospital
Other
Eligibility
8 Years to 17 Years
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Oct 7, 2015 · Synced Sep 3, 2026, 5:06 AM EDT
Terminated Phase 1 Interventional

Vitamin D Supplementation as Non-toxic Immunomodulation in Children With Crohn's Disease

NCT01046773
View directory record Official record
Conditions
Crohn's Disease, Vitamin D Deficiency
Interventions
Cholecalciferol
Drug
Lead sponsor
University of California, Los Angeles
Other
Eligibility
8 Years to 18 Years
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2017
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Feb 6, 2018 · Synced Sep 3, 2026, 5:06 AM EDT
Completed Phase 2 Interventional

Effects of Nutritional Supplementation on Protein and Energy Homeostasis in Malnourished Chronic Hemodialysis Patients

NCT00244075
View directory record Official record
Conditions
End Stage Renal Disease
Interventions
nutritional supplement, recombinant human growth hormone (rcGH), exercise
Dietary Supplement · Drug · Behavioral
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years to 75 Years
Enrollment
46 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1998 – 2006
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated May 24, 2015 · Synced Sep 3, 2026, 5:06 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Malnutrition Associated With Complications After Ileostomy Reversal

NCT03909542
View directory record Official record
Conditions
Inflammatory Bowel Diseases, Ileostomy
Interventions
Not listed
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
Not listed
Enrollment
359 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2018
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 9, 2019 · Synced Sep 3, 2026, 5:06 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Feasibility, Acceptability and Directional Signal Effect on Blood Folate Levels of Iodized Salt Fortified With Folic Acid: Clinical Study

NCT05935631
View directory record Official record
Conditions
Neural Tube Defects, Folic Acid Deficiency, Fortification
Interventions
Salt with folic acid and iodine
Dietary Supplement
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years to 40 Years · Female only
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Jul 31, 2023 · Synced Sep 3, 2026, 5:06 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Assessment of Vitamin D Supplementation and Immune Function

NCT01399151
View directory record Official record
Conditions
Vitamin D Deficiency
Interventions
Vitamin D - Treatment 1, Vitamin D - Treatment 2, Vitamin D - Treatment 3
Dietary Supplement
Lead sponsor
USDA, Western Human Nutrition Research Center
Federal
Eligibility
20 Years to 49 Years
Enrollment
23 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2014
U.S. locations
1
States / cities
Davis, California
Source: ClinicalTrials.gov public record
Updated Apr 21, 2014 · Synced Sep 3, 2026, 5:06 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Virtual Technical Assistance for Child and Adult Care Food Program in Family Child Care Home

NCT04345874
View directory record Official record
Conditions
Nutrition Poor, Health Behavior
Interventions
Nutrition technical assistance, Children's environmental health technical assistance
Behavioral
Lead sponsor
University of Oklahoma
Other
Eligibility
18 Years to 70 Years
Enrollment
69 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Dec 17, 2024 · Synced Sep 3, 2026, 5:06 AM EDT
Completed No phase listed Observational

Catheterization to Locate Mesenchymal Tumors in Patients With Tumor-Induced Osteomalacia or Oncogenic Osteomalacia

NCT00099762
View directory record Official record
Conditions
Osteomalacia, Neoplasms
Interventions
Not listed
Lead sponsor
National Institute of Dental and Craniofacial Research (NIDCR)
NIH
Eligibility
8 Years to 100 Years
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2004
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced Sep 3, 2026, 5:06 AM EDT
Terminated Not applicable Interventional Results available

Medical Nutrition Therapy or Standard Care in Treating Patients With Lung Cancer, Pancreatic Cancer, or Stage III or Stage IV Prostate Cancer

NCT00769652
View directory record Official record
Conditions
Lung Cancer, Malnutrition, Pancreatic Cancer, Prostate Cancer, Weight Changes
Interventions
Medical nutrition therapy, Standard Care
Behavioral
Lead sponsor
Rutgers, The State University of New Jersey
Other
Eligibility
18 Years to 120 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
1
States / cities
New Brunswick, New Jersey
Source: ClinicalTrials.gov public record
Updated Oct 2, 2023 · Synced Sep 3, 2026, 5:06 AM EDT
Completed Not applicable Interventional

Whipple Protein Study

NCT04306874
View directory record Official record
Conditions
Pancreatic Cancer, Malnutrition
Interventions
Ensure Max Protein
Dietary Supplement
Lead sponsor
Thomas Jefferson University
Other
Eligibility
18 Years and older
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 6, 2025 · Synced Sep 3, 2026, 5:06 AM EDT
Completed Not applicable Interventional

Trial of Continuous Versus Interrupted Feeding for Intubated Intensive Care Unit Patients

NCT01383980
View directory record Official record
Conditions
Malnutrition
Interventions
Continuous Tube Feedings
Dietary Supplement
Lead sponsor
Oregon Health and Science University
Other
Eligibility
18 Years and older
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2017
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Mar 18, 2019 · Synced Sep 3, 2026, 5:06 AM EDT
Completed No phase listed Observational

Longitudinal Energy Expenditure and Metabolic Effects in Patients With COVID-19 (LEEP-COVID)

NCT04350073
View directory record Official record
Conditions
COVID-19
Interventions
Q-NRG Metobolic Cart Device, MuscleSound Ultrasound, Multifrequency Bioimpedance Spectroscopy
Device
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
65 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated May 15, 2023 · Synced Sep 3, 2026, 5:06 AM EDT