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ClinicalTrials.gov public records Last synced Oct 22, 2026, 10:01 AM EDT

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Showing 481–504 of 604 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Dietary Deficiency Clear all
Completed Not applicable Interventional Accepts healthy volunteers

Impact of Vitamin D Supplementation on Cardiometabolic Risk Factors [The Daily D Health Study]

NCT01537809
View directory record Official record
Conditions
Vitamin D Deficiency
Interventions
Vitamin D3
Dietary Supplement
Lead sponsor
Tufts University
Other
Eligibility
9 Years to 14 Years
Enrollment
691 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2013
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 13, 2013 · Synced Oct 22, 2026, 10:01 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

The Effect Of Vitamin D On Measures Of Bone Health And Gene Expression

NCT01696409
View directory record Official record
Conditions
Vitamin D Deficiency
Interventions
400 IU vitamin D3, 2000 IU vitamin D3
Dietary Supplement
Lead sponsor
Boston University
Other
Eligibility
18 Years to 70 Years
Enrollment
11 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2012
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 4, 2017 · Synced Oct 22, 2026, 10:01 AM EDT
Completed Not applicable Interventional

Vitamin D Replacement Using Oral Thin Film (OTF) Cholecalciferol in Patients Undergoing Hematopoietic Stem Cell Transplantation

NCT04818957
View directory record Official record
Conditions
Vitamin D Deficiency, Hematopoietic Stem Cell Transplantation (HSCT)
Interventions
Oral Thin Film (OTF) Cholecalciferol (Vitamin D3)
Dietary Supplement
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
Not listed
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Mar 2, 2023 · Synced Oct 22, 2026, 10:01 AM EDT
Completed Not applicable Interventional

Low Magnitude Mechanical Stimuli Effects on Bone Structure in ESRD

NCT00364234
View directory record Official record
Conditions
Renal Osteodystrophy
Interventions
Low magnitude mechanical stimuli
Device
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
21 Years to 65 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 14, 2015 · Synced Oct 22, 2026, 10:01 AM EDT
Terminated No phase listed Observational

Dietary Cholesterol and Defects in Cholesterol Synthesis in Mevalonate Kinase Deficiency

NCT00260299
View directory record Official record
Conditions
Mevalonic Aciduria, Mevalonate Kinase Deficiency, Immune System Diseases, Periodic Fever Syndromes, Hereditary, Lipid Metabolism, Inborn Errors
Interventions
Not listed
Lead sponsor
Oregon Health and Science University
Other
Eligibility
Not listed
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2016
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated May 24, 2019 · Synced Oct 22, 2026, 10:01 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Drug Metabolizing Enzyme and Transporter Function in Chronic Kidney Disease

NCT02360644
View directory record Official record
Conditions
Chronic Kidney Diseases, Deficiency, Vitamin D
Interventions
Cholecalciferol
Dietary Supplement
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years to 70 Years
Enrollment
23 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2019
U.S. locations
2
States / cities
Aurora, Colorado • Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 30, 2021 · Synced Oct 22, 2026, 10:01 AM EDT
Completed Not applicable Interventional Results available

Treatment of Vitamin D Deficiency in Patients With Rheumatoid Arthritis

NCT01426347
View directory record Official record
Conditions
Rheumatoid Arthritis, Vitamin D Deficiency
Interventions
Placebo sugar pill, Ergocalciferol
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 75 Years
Enrollment
139 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 20, 2017 · Synced Oct 22, 2026, 10:01 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available

Prospective Evaluation of NOTES (Natural Orifice Translumenal Endoscopic Surgery) PEG "Rescue"

NCT01119040
View directory record Official record
Conditions
Malnutrition
Interventions
Natural Orifice Translumenal Endoscopic Surgery
Procedure
Lead sponsor
University Hospitals Cleveland Medical Center
Other
Eligibility
18 Years to 85 Years
Enrollment
1 participant
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2010
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Jan 5, 2015 · Synced Oct 22, 2026, 10:01 AM EDT
Completed Not applicable Interventional

Effect of Diet-induced Weight Loss on HIV-associated Metabolic Syndrome

NCT00857298
View directory record Official record
Conditions
HIV (Human Immunodeficiency Virus), Metabolic Syndrome, HIV Infections
Interventions
Dietary Intervention
Behavioral
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 60 Years · Female only
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2014
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Feb 16, 2015 · Synced Oct 22, 2026, 10:01 AM EDT
Recruiting Not applicable Interventional

Linking Education, Produce Provision, and Community Referrals to Improve Diabetes Care (LINK)

NCT05472441
View directory record Official record
Conditions
Diabetes Mellitus, Type 2, Nutrition Poor, Food Deprivation
Interventions
Mid-Ohio Food Farmacy, Mid-Ohio Food Farmacy + Cooking for Diabetes, Mid-Ohio Food Farmacy + Health Impact Ohio Pathways Hub, Mid-Ohio Food Farmacy + Cooking for Diabetes + Health Impact Ohio Pathways Hub
Behavioral
Lead sponsor
Ohio State University
Other
Eligibility
18 Years and older
Enrollment
568 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Aug 11, 2025 · Synced Oct 22, 2026, 10:01 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 22, 2026, 10:01 AM EDT
Terminated Phase 2 Interventional Results available

Safety and Efficacy Study of the Effect of Etanercept in Hemodialysis Patients

NCT00293202
View directory record Official record
Conditions
End Stage Renal Disease
Interventions
Etanercept, Placebo
Drug
Lead sponsor
Kaysen, George A., M.D., Ph.D.
Other
Eligibility
18 Years to 80 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2010
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Jul 13, 2021 · Synced Oct 22, 2026, 10:01 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available

Vitamin D for Painful Nocturnal Leg Cramps

NCT00715429
View directory record Official record
Conditions
Leg Cramps, Nocturnal
Interventions
vitamin d, placebo
Drug
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
50 Years and older
Enrollment
29 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2011
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Sep 17, 2019 · Synced Oct 22, 2026, 10:01 AM EDT
Completed Not applicable Interventional

Identifying Vitamin D Deficiency in Very Low Birth Weight Infant (VLBW) Infants Part 2

NCT01363167
View directory record Official record
Conditions
Infant, Very Low Birth Weight, Calcium Deficiency, Vitamin D Deficiency
Interventions
400 IU Cholecalciferol- Vitamin D Daily
Dietary Supplement
Lead sponsor
Medical University of South Carolina
Other
Eligibility
1 Day to 3 Days
Enrollment
68 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
2
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Nov 24, 2014 · Synced Oct 22, 2026, 10:01 AM EDT
Completed No phase listed Observational

Using Exhaled Air to Determine Changes in Nutritional Status of Patients on Intravenous Nutrition

NCT02843256
View directory record Official record
Conditions
Obesity, Malnourished, Fasting
Interventions
Isomark Canary
Device
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Nov 28, 2017 · Synced Oct 22, 2026, 10:01 AM EDT
Completed Not applicable Interventional

PROSPective Evaluation of Fortified Eggs Related to Improvement in The Biomarker Profile for Your Health

NCT04673721
View directory record Official record
Conditions
Hypercholesterolemia, Hyperlipidemia, Vitamin Deficiency, Obesity
Interventions
Fortified eggs, Intermittent fasting, Non-egg supplemented, Usual care diet
Dietary Supplement · Behavioral
Lead sponsor
Duke University
Other
Eligibility
50 Years and older
Enrollment
140 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jan 23, 2023 · Synced Oct 22, 2026, 10:01 AM EDT
Withdrawn Not applicable Interventional

hCAP18 Levels and Vitamin D Deficiency in Chronic Kidney Disease

NCT01026363
View directory record Official record
Conditions
Chronic Kidney Disease, Vitamin D Deficiency
Interventions
Ergocalciferol, Calcitriol
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 80 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2014
U.S. locations
1
States / cities
Cambridge, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 23, 2015 · Synced Oct 22, 2026, 10:01 AM EDT
Completed Phase 1 Interventional

Effects of Treating Vitamin D Deficiency in Poorly Controlled Type 2 Diabetes

NCT01855321
View directory record Official record
Conditions
Type 2 Diabetes
Interventions
Vitamin D, Placebo
Drug
Lead sponsor
University of Florida
Other
Eligibility
30 Years to 65 Years
Enrollment
76 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2015
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Jun 26, 2015 · Synced Oct 22, 2026, 10:01 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 22, 2026, 10:01 AM EDT
Completed Not applicable Interventional

Trauma Screening and Supplementation

NCT03658278
View directory record Official record
Conditions
Trauma, Nutritional Deficiency, Wound Heal
Interventions
Juven
Dietary Supplement
Lead sponsor
Michael C Willey
Other
Eligibility
18 Years to 100 Years
Enrollment
400 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Sep 21, 2023 · Synced Oct 22, 2026, 10:01 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

The Role of Vitamin D in Female Reproductive Tract Immunity

NCT02186535
View directory record Official record
Conditions
Vitamin D Deficiency
Interventions
Vitamin D and Calcium
Dietary Supplement
Lead sponsor
CONRAD
Other
Eligibility
21 Years to 50 Years · Female only
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
Norfolk, Virginia
Source: ClinicalTrials.gov public record
Updated Jan 8, 2016 · Synced Oct 22, 2026, 10:01 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Study of the Effects of Vitamin C on Patients With Type 2 Diabetes

NCT00001870
View directory record Official record
Conditions
Diabetes Mellitus, Non-Insulin Dependent, Non-Insulin Dependent
Interventions
Acetylcholine
Drug
Lead sponsor
National Center for Complementary and Integrative Health (NCCIH)
NIH
Eligibility
Not listed
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1999 – 2004
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 4, 2008 · Synced Oct 22, 2026, 10:01 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Efficacy of Daily Vitamin D3 Supplementation in Normal Weight Adolescents

NCT01058720
View directory record Official record
Conditions
Vitamin D Deficiency
Interventions
Vitamin D3
Dietary Supplement
Lead sponsor
Mayo Clinic
Other
Eligibility
12 Years to 18 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2011
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 1, 2016 · Synced Oct 22, 2026, 10:01 AM EDT
Completed Not applicable Interventional

Vitamin D Effect on Calcium Absorption on Persons on Hemodialysis

NCT01325610
View directory record Official record
Conditions
Chronic Kidney Disease, End Stage Renal Disease, Vitamin D Deficiency
Interventions
cholecalciferol
Dietary Supplement
Lead sponsor
Creighton University
Other
Eligibility
19 Years and older
Enrollment
37 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Apr 4, 2012 · Synced Oct 22, 2026, 10:01 AM EDT