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ClinicalTrials.gov public records Last synced Oct 20, 2026, 5:28 AM EDT

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Showing 97–120 of 604 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Dietary Deficiency Clear all
Withdrawn Not applicable Interventional Accepts healthy volunteers

Calcimimetics in Hypophosphatemic Rickets

NCT00844740
View directory record Official record
Conditions
Familial Hypophosphatemic Rickets
Interventions
Cinacalcet
Drug
Lead sponsor
Children's Mercy Hospital Kansas City
Other
Eligibility
5 Years to 21 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2012
U.S. locations
1
States / cities
Kansas City, Missouri
Source: ClinicalTrials.gov public record
Updated Dec 17, 2020 · Synced Oct 20, 2026, 5:28 AM EDT
Completed Phase 3 Interventional

Hepatic Dysfunction, Vitamin D Status, and Glycemic Control in Diabetes

NCT02132442
View directory record Official record
Conditions
Type 2 Diabetes, Nonalcoholic Fatty Liver Disease, Vitamin D Deficiency
Interventions
Ergocalciferol, placebo
Dietary Supplement
Lead sponsor
University of Massachusetts, Worcester
Other
Eligibility
10 Years to 50 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Worcester, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 10, 2017 · Synced Oct 20, 2026, 5:28 AM EDT
Completed Not applicable Interventional Results available

Calcitonin for Treating X-linked Hypophosphatemia

NCT01652573
View directory record Official record
Conditions
Hypophosphatemic Rickets, X Linked Dominant
Interventions
nasal salmon calcitonin, Saline Nasal Spray Placebo
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 80 Years
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated May 31, 2017 · Synced Oct 20, 2026, 5:28 AM EDT
Completed Phase 1Phase 2 Interventional Results available

An Extension Study of KRN23 in Adults With X-Linked Hypophosphatemia

NCT01571596
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
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
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 20, 2026, 5:28 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

The Effects of Acute Erythropoietin on Hepcidin and Dietary Iron Absorption Following Military-relevant Exercise in Energy Deficit: Pilot Study

NCT07517562
View directory record Official record
Conditions
Iron Absorption
Interventions
Exercise test
Other
Lead sponsor
Pennington Biomedical Research Center
Other
Eligibility
18 Years to 45 Years
Enrollment
6 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Baton Rouge, Louisiana
Source: ClinicalTrials.gov public record
Updated Oct 2, 2026 · Synced Oct 20, 2026, 5:28 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 6, 2020 · Synced Oct 20, 2026, 5:28 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Energy Status and Protein Intake As Prognostic Indicators of Rehabilitative Outcomes

NCT06734845
View directory record Official record
Conditions
Orthopedic, Osteo Arthritis Knee, Hip Osteoarthritis, Protein-Energy Malnutrition, Energy Malnutrition Protein
Interventions
Total Knee Arthroplasty, Total Joint Arthroplasty
Procedure
Lead sponsor
University of Connecticut
Other
Eligibility
50 Years to 70 Years
Enrollment
38 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
Hartford, Connecticut
Source: ClinicalTrials.gov public record
Updated Dec 16, 2024 · Synced Oct 20, 2026, 5:28 AM EDT
Terminated Not applicable Interventional

High Dose Vitamin D Replacement in Patients Undergoing Hematopoietic Stem Cell Transplantation

NCT02876822
View directory record Official record
Conditions
Vitamin D Deficiency
Interventions
Vitamin D
Dietary Supplement
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
Not listed
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Aug 20, 2020 · Synced Oct 20, 2026, 5:28 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Nutrition for Health and Performance in Female Collegiate Soccer Players

NCT06581237
View directory record Official record
Conditions
Healthy
Interventions
Eat2Win App
Other
Lead sponsor
Case Western Reserve University
Other
Eligibility
18 Years and older · Female only
Enrollment
27 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Feb 11, 2025 · Synced Oct 20, 2026, 5:28 AM EDT
Withdrawn No phase listed Observational Accepts healthy volunteers

Vitamin D Ancillary Study in 5 Populations of African Origin

NCT02111902
View directory record Official record
Conditions
Cardiovascular Disease, Obesity
Interventions
Not listed
Lead sponsor
Loyola University
Other
Eligibility
25 Years to 44 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2011
U.S. locations
1
States / cities
Maywood, Illinois
Source: ClinicalTrials.gov public record
Updated Aug 30, 2017 · Synced Oct 20, 2026, 5:28 AM EDT
Completed Not applicable Interventional Results available

Cholecalciferol Versus Doxercalciferol in the Treatment of Secondary Hyperparathyroidism in Chronic Kidney Disease

NCT00285467
View directory record Official record
Conditions
Renal Osteodystrophy
Interventions
doxercalciferol, Cholecalciferol
Drug
Lead sponsor
Indiana University
Other
Eligibility
18 Years to 82 Years
Enrollment
55 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated May 2, 2016 · Synced Oct 20, 2026, 5:28 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Resistance Exercise and Protein During Weight Loss

NCT03600311
View directory record Official record
Conditions
Weight Loss, Starvation
Interventions
Caloric Restriction, Post-Exercise Protein, Energy Balance, Post-Exercise Carbohydrate, Calcium and Vitamin D
Other · Dietary Supplement
Lead sponsor
University of Nebraska Lincoln
Other
Eligibility
19 Years to 30 Years
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Lincoln, Nebraska
Source: ClinicalTrials.gov public record
Updated Jun 12, 2019 · Synced Oct 20, 2026, 5:28 AM EDT
Completed Phase 3 Interventional Results available

High Dose Preoperative Cholecalciferol Supplementation and Perioperative Vitamin D Status

NCT01689779
View directory record Official record
Conditions
Hypovitaminosis D
Interventions
100,000 IU cholecalciferol, Placebo
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 28, 2017 · Synced Oct 20, 2026, 5:28 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 18, 2024 · Synced Oct 20, 2026, 5:28 AM EDT
Completed Not applicable Interventional

Diet and Exercise-Based Counseling Program Compared With a Standard Counseling Program in Patients With Early-Stage Prostate Cancer

NCT00044980
View directory record Official record
Conditions
Malnutrition, Prostate Cancer
Interventions
nutritional support, quality-of-life assessment
Procedure
Lead sponsor
Duke University
Other
Eligibility
18 Years to 120 Years · Male only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2006
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 23, 2017 · Synced Oct 20, 2026, 5:28 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Metabolic Syndrome and Insulin Resistance at Allina

NCT01545830
View directory record Official record
Conditions
Metabolic Syndrome
Interventions
vitamin D3 (cholecalciferol)
Dietary Supplement
Lead sponsor
Allina Health System
Other
Eligibility
18 Years and older
Enrollment
84 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2014
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Sep 1, 2016 · Synced Oct 20, 2026, 5:28 AM EDT
Completed No phase listed Observational

Vitamin D Deficiency in Obese Adolescent Girls and Influence of Vitamin D on Insulin Secretion and Sensitivity

NCT00850694
View directory record Official record
Conditions
Vitamin D Deficiency, Obesity, Insulin Resistance
Interventions
Not listed
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
10 Years to 18 Years · Female only
Enrollment
114 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Apr 10, 2017 · Synced Oct 20, 2026, 5:28 AM EDT
Terminated Early Phase 1 Interventional

Effects of Vitamin D on Renin Expression in Hypertensive Patients

NCT00585442
View directory record Official record
Conditions
Hypertension, Vitamin D Deficiency
Interventions
calcitriol, Placebo
Drug
Lead sponsor
University of Utah
Other
Eligibility
55 Years and older
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated May 27, 2016 · Synced Oct 20, 2026, 5:28 AM EDT
Not listed No phase listed Observational

A Retrospective Analysis of Cerefolin NAC® in Cognitively Impaired Patients

NCT01594541
View directory record Official record
Conditions
Mild Cognitive Impairment
Interventions
Not listed
Lead sponsor
Pamlab, Inc.
Industry
Eligibility
55 Years to 89 Years
Enrollment
700 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
1
States / cities
Springfield, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 24, 2014 · Synced Oct 20, 2026, 5:28 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 20, 2026, 5:28 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

NCT01704079
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
216 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 20, 2026, 5:28 AM EDT
Completed No phase listed Observational

Laparoscopic Revision From Biliopancreatic Diversion to Gastric Bypass

NCT01041456
View directory record Official record
Conditions
Metabolic and Nutritional Complications, Protein Malnutrition, Intestinal Malabsorptive Syndrome, Metabolic Bone Disease
Interventions
Not listed
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years to 65 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009
U.S. locations
1
States / cities
Fresno, California
Source: ClinicalTrials.gov public record
Updated Jan 1, 2010 · Synced Oct 20, 2026, 5:28 AM EDT
Terminated Phase 2 Interventional Accepts healthy volunteers

Improving Functionality in Older People

NCT03611049
View directory record Official record
Conditions
Vitamin D Deficiency
Interventions
High dose Vitamin D3, Low dose Vitamin D3
Dietary Supplement
Lead sponsor
Texas Tech University Health Sciences Center
Other
Eligibility
65 Years to 89 Years
Enrollment
14 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Lubbock, Texas
Source: ClinicalTrials.gov public record
Updated Jul 23, 2019 · Synced Oct 20, 2026, 5:28 AM EDT
Completed Phase 2 Interventional Results available

The Effect of Etelcalcetide on CKD-MBD

NCT03960437
View directory record Official record
Conditions
Chronic Kidney Disease Mineral and Bone Disorder, Renal Osteodystrophy, Vascular Calcification, Hyperparathyroidism; Secondary, Renal
Interventions
Etelcalcetide
Drug
Lead sponsor
Thomas Nickolas, MD MS
Other
Eligibility
18 Years and older
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Sep 21, 2023 · Synced Oct 20, 2026, 5:28 AM EDT