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ClinicalTrials.gov public records Last synced Oct 21, 2026, 6:31 AM EDT

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Showing 1–24 of 560 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Undernutrition Clear all
Completed Not applicable Interventional Accepts healthy volunteers

A Pilot Study of the Effect of Dietary Fat Type and Amount on Vitamin D3 Absorption

NCT01508845
View directory record Official record
Conditions
Vitamin D Deficiency
Interventions
cholecalciferol
Dietary Supplement
Lead sponsor
Tufts University
Other
Eligibility
50 Years and older
Enrollment
61 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 21, 2014 · Synced Oct 21, 2026, 6:31 AM EDT
Completed Not applicable Interventional

Oral Nutritional Supplementation in Children at Risk of Undernutrition

NCT05161000
View directory record Official record
Conditions
Undernutrition
Interventions
Oral Nutritional Supplement, Dietary counseling
Other
Lead sponsor
Abbott Nutrition
Industry
Eligibility
36 Months to 107 Months
Enrollment
279 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
17
States / cities
Oneonta, Alabama • Glenwood, Arkansas • Hot Springs, Arkansas + 12 more
Source: ClinicalTrials.gov public record
Updated Jul 16, 2024 · Synced Oct 21, 2026, 6:31 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Impact of Vitamin D Status on Bones in Breastfed Infants

NCT00697294
View directory record Official record
Conditions
Vitamin D Deficiency
Interventions
Tri-Vi-Sol
Dietary Supplement
Lead sponsor
Baylor College of Medicine
Other
Eligibility
Up to 2 Hours
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2011
U.S. locations
3
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Dec 5, 2011 · Synced Oct 21, 2026, 6:31 AM EDT
Not listed Early Phase 1 Interventional Accepts healthy volunteers

Periodontal and Cardiometabolic Responses to Vitamin D Intervention in African Americans With Periodontal Disease

NCT02337257
View directory record Official record
Conditions
Periodontal Disease, Vitamin D Deficiency
Interventions
Cholecalciferol, Placebo
Drug
Lead sponsor
Augusta University
Other
Eligibility
18 Years to 60 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
Augusta, Georgia
Source: ClinicalTrials.gov public record
Updated Jan 13, 2015 · Synced Oct 21, 2026, 6:31 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effectiveness of Quaker Complete Nutrition Supplements for Malnourished Adults

NCT00523900
View directory record Official record
Conditions
Malnutrition
Interventions
Quaker Complete Nutrition Supplements
Dietary Supplement
Lead sponsor
Johns Hopkins Bloomberg School of Public Health
Other
Eligibility
18 Years to 95 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 3, 2018 · Synced Oct 21, 2026, 6:31 AM EDT
Completed Phase 3 Interventional Results available

Safety and Efficacy of CTAP101 to Treat Secondary Hyperparathyroidism in Stage 3 or 4 CKD and Vitamin D Insufficiency

NCT01651000
View directory record Official record
Conditions
Chronic Kidney Disease, Hyperparathyroidism, Secondary, Vitamin D Deficiency
Interventions
CTAP101 30 μg capsules, Sugar pill to CTAP101 30 μg capsules
Drug · Other
Lead sponsor
OPKO IP Holdings II, Inc.
Industry
Eligibility
18 Years and older
Enrollment
213 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Bannockburn, Illinois
Source: ClinicalTrials.gov public record
Updated Jan 13, 2025 · Synced Oct 21, 2026, 6:31 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effect of Weight on Vitamin D Dose Response

NCT01013584
View directory record Official record
Conditions
Obesity, Vitamin D Deficiency
Interventions
cholecalciferol
Dietary Supplement
Lead sponsor
Creighton University
Other
Eligibility
19 Years to 60 Years · Male only
Enrollment
67 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2011
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Jun 26, 2012 · Synced Oct 21, 2026, 6:31 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Beta-carotene Absorption and Bioconversion to Vitamin A From Biofortified Cassava Gari

NCT02210507
View directory record Official record
Conditions
Vitamin A Deficiency
Interventions
Biofortified cassava gari, White cassava gari, White cassava gari + red palm oil
Other
Lead sponsor
USDA, Western Human Nutrition Research Center
Federal
Eligibility
18 Years to 45 Years · Female only
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014
U.S. locations
1
States / cities
Davis, California
Source: ClinicalTrials.gov public record
Updated Jan 12, 2015 · Synced Oct 21, 2026, 6:31 AM EDT
Completed Phase 2 Interventional Results available

Burosumab for Fibroblast Growth Factor-23 Mediated Hypophosphatemia in Fibrous Dysplasia

NCT05509595
View directory record Official record
Conditions
Fibrous Dysplasia Of Bone
Interventions
Burosumab
Drug
Lead sponsor
National Institute of Dental and Craniofacial Research (NIDCR)
NIH
Eligibility
1 Year to 99 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 2, 2026 · Synced Oct 21, 2026, 6:31 AM EDT
Completed Not applicable Interventional

Study Impact of Nutritional Supplementary Treatment of Undernourished Stroke Patient on Functional Outcome Measures

NCT00332800
View directory record Official record
Conditions
Stroke
Interventions
Nutritional Supplementation
Drug
Lead sponsor
Burke Rehabilitation Hospital
Other
Eligibility
18 Years to 95 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2005
U.S. locations
1
States / cities
White Plains, New York
Source: ClinicalTrials.gov public record
Updated Jun 2, 2006 · Synced Oct 21, 2026, 6:31 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Asthma and Obesity Diet Versus Exercise

NCT03644355
View directory record Official record
Conditions
Obesity, Childhood, Asthma in Children, Inflammatory Response, Metabolic Syndrome, Nutrition Poor, Physical Activity, Behavior, Eating, Molecular Biology, Restriction Fragment Length Polymorphisms, Maternal Exposure, Genetic Change
Interventions
Lifestyle counseling
Behavioral
Lead sponsor
Louisiana State University Health Sciences Center in New Orleans
Other
Eligibility
13 Years to 19 Years · Female only
Enrollment
110 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2016
U.S. locations
1
States / cities
New Orleans, Louisiana
Source: ClinicalTrials.gov public record
Updated Aug 23, 2018 · Synced Oct 21, 2026, 6:31 AM EDT
Withdrawn No phase listed Observational

Taste And Smell TEsting in End Stage Renal Disease

NCT03043144
View directory record Official record
Conditions
Kidney Failure, Chronic, Olfaction Disorders, Taste Disorders, Malnutrition
Interventions
Worsening of olfaction from enrollment visit to 6 months, Worsening of taste from enrollment visit to 6 months, Serum Zinc, Chronic rhinosinusitis, Dialysis adequacy, Decayed missing filled teeth index (DMFT)
Other
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 26, 2017 · Synced Oct 21, 2026, 6:31 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Pharmacokinetics of a Single Large Dose of Vitamin D3

NCT00473239
View directory record Official record
Conditions
Vitamin D Deficiency
Interventions
cholecalciferol.
Drug
Lead sponsor
Creighton University
Other
Eligibility
19 Years and older
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2007
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated May 4, 2015 · Synced Oct 21, 2026, 6:31 AM EDT
Recruiting No phase listed Observational

Precision Medicine Approaches to Renal Osteodystrophy

NCT05880914
View directory record Official record
Conditions
Renal Osteodystrophy, Chronic Kidney Diseases, CKD-MBD, Bone Turnover Rate Disorder, Secondary Hyperparathyroidism
Interventions
miRNAseq analysis, Standard treatment for bone disorder
Procedure · Drug
Lead sponsor
Thomas Nickolas
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jun 12, 2026 · Synced Oct 21, 2026, 6:31 AM EDT
Completed No phase listed Observational Results available

A Retrospective Study of the Natural History of Patients With Severe Perinatal and Infantile Hypophosphatasia (HPP)

NCT01419028
View directory record Official record
Conditions
Hypophosphatasia (HPP)
Interventions
Not listed
Lead sponsor
Alexion Pharmaceuticals, Inc.
Industry
Eligibility
Not listed
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
5
States / cities
Los Angeles, California • Indianapolis, Indiana • St Louis, Missouri + 2 more
Source: ClinicalTrials.gov public record
Updated Apr 1, 2019 · Synced Oct 21, 2026, 6:31 AM EDT
Completed Phase 3 Interventional Results available

Open Label Study of KRN23 on Osteomalacia in Adults With X-linked Hypophosphatemia (XLH)

NCT02537431
View directory record Official record
Conditions
X-linked Hypophosphatemia
Interventions
burosumab
Biological
Lead sponsor
Kyowa Kirin, Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
5
States / cities
San Francisco, California • New Haven, Connecticut • Indianapolis, Indiana + 2 more
Source: ClinicalTrials.gov public record
Updated Jun 18, 2024 · Synced Oct 21, 2026, 6:31 AM EDT
Terminated Phase 4 Interventional

Sustainability of Vitamin D Levels After Repletion With Ergocalciferol In Chronic Kidney Disease Stage 5D

NCT01312441
View directory record Official record
Conditions
Vitamin D Deficiency, Renal Failure Chronic Requiring Hemodialysis
Interventions
Ergocalciferol, Placebo
Drug
Lead sponsor
Albany College of Pharmacy and Health Sciences
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
4
States / cities
Albany, New York • Clifton Park, New York • Saratoga Springs, New York + 1 more
Source: ClinicalTrials.gov public record
Updated Jan 14, 2016 · Synced Oct 21, 2026, 6:31 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Screening for Metabolic Problems in Mothers of Children With Autism and Typically Developing Children

NCT02674022
View directory record Official record
Conditions
Pregnancy, Autistic Disorder, Folic Acid Deficiency
Interventions
Prenatal supplement
Dietary Supplement
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older · Female only
Enrollment
59 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
1
States / cities
Scottsdale, Arizona
Source: ClinicalTrials.gov public record
Updated Oct 19, 2020 · Synced Oct 21, 2026, 6:31 AM EDT
Completed Not applicable Interventional

Randomized Study of Folic Acid Therapy for Hyperhomocysteinemia in Patients With End Stage Renal Disease Receiving Hemodialysis

NCT00004495
View directory record Official record
Conditions
End Stage Renal Disease, Hyperhomocysteinemia
Interventions
cyanocobalamin, folic acid, pyridoxine
Drug
Lead sponsor
Georgetown University
Other
Eligibility
21 Years to 89 Years
Enrollment
84 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1999 – 2000
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Mar 25, 2015 · Synced Oct 21, 2026, 6:31 AM EDT
Completed Phase 4 Interventional

Osteopenia and Renal Osteodystrophy: Evaluation and Management

NCT00108394
View directory record Official record
Conditions
Osteopenia, Renal Osteodystrophy
Interventions
pamidronate
Drug
Lead sponsor
US Department of Veterans Affairs
Federal
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2007
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jan 21, 2009 · Synced Oct 21, 2026, 6:31 AM EDT
Completed Not applicable Interventional Results available

Treatment of Vitamin D Deficiency in Intestinal Rehabilitation Clinic Patients With a Portable Ultraviolet B Lamp

NCT01930539
View directory record Official record
Conditions
Vitamin D Deficiency, Short Bowel Syndrome
Interventions
Ultraviolet B lamp
Device
Lead sponsor
University of Nebraska
Other
Eligibility
19 Years and older
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Oct 4, 2023 · Synced Oct 21, 2026, 6:31 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Metformin Use and Vitamin B12 Deficiency

NCT01136512
View directory record Official record
Conditions
Vitamin B12 Deficiency, Type 2 Diabetes Mellitus
Interventions
Not listed
Lead sponsor
Northwell Health
Other
Eligibility
20 Years to 80 Years
Enrollment
89 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
1
States / cities
Staten Island, New York
Source: ClinicalTrials.gov public record
Updated Jul 31, 2013 · Synced Oct 21, 2026, 6:31 AM EDT
Not listed Not applicable Interventional

Healthy Frio: A Rural Community Partnership to Advance Latino Obesity Research

NCT03186885
View directory record Official record
Conditions
Obesity, Nutrition Poor, Physical Activity, Weight Loss
Interventions
Healthy Frio In-Person Family-focused Intervention, Healthy Frio Remote Technology Family-focused Intervention, Control
Behavioral
Lead sponsor
University of Texas at Austin
Other
Eligibility
8 Years and older
Enrollment
260 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2023
U.S. locations
1
States / cities
Pearsall, Texas
Source: ClinicalTrials.gov public record
Updated Nov 3, 2022 · Synced Oct 21, 2026, 6:31 AM EDT
Completed No phase listed Observational

VA Nutrition Study on Immune Function

NCT00105625
View directory record Official record
Conditions
Malnutrition, Infection, Nosocomial Infection
Interventions
Not listed
Lead sponsor
US Department of Veterans Affairs
Federal
Eligibility
55 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2007
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Apr 7, 2015 · Synced Oct 21, 2026, 6:31 AM EDT