Clinical trials: Vitamin D Status
Primary Osteoporosis
Vitamin D Status and Multi-Omics Profiles in Primary Osteoporosis
This observational study aims to explore the relationships between vitamin D status and genomic, proteomic, and metabolomic profiles in patients with primary osteoporosis.
- Trial name
- OP-MultiOmics (NCT07296471)
- Where
- China
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- Dr. Li Chen
Type 2 Diabetes
The Effect of Vitamin D Supplementation on Glucose Metabolism in Non-Diabetic African American Adults
Type 2 diabetes is more common among African Americans than Caucasians. African Americans are also at a higher risk for lower levels of vitamin D compared to other ethnic groups.
- Trial name
- AVIS (NCT01141192)
- Testing
- vitamin D3, cholecalciferol, Inactive comparator
- Where
- United States
- Volunteers
- 48 people
- Sponsor
- Augusta University
Vitamin D Status
Getting Vitamin D Dosing Right
The investigators want to make sure that people get the right dose of Vitamin D treatment. They will therefore investigate how skin colour, body mass index, ethnicity, vitamin D binding protein and genetic variation affect the…
- Trial name
- NCT02474446
- Testing
- Vitamin D
- Where
- United Kingdom
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Sheffield Children's NHS Foundation Trust
Vitamin D Deficiency
The Effect of Vitamin D on Bone Accretion and Turn-Over in Young Girls
Objectives To evaluate the effect of increased vitamin D intake on vitamin D status, bone mass and bone turnover in young girls aged 12-13.
- Trial name
- NCT00267540
- Testing
- cholecalciferol (D3) (vitamin)
- Where
- Denmark
- Volunteers
- 225 people, healthy volunteers welcome
- Sponsor
- University of Copenhagen
Vitamin D Deficiency, 25-Hydroxyvitamin D3 Deficiency, Selective
Effect of Vitamin D3 Supplementation in Children From 12 to 30 Months of Age.
Background Vitamin D (VD) is essential for calcium absorption, bone health and growth in children. In a national representative sample authors found mean serum concentration of 25-Hydroxi-Vitamin-D (25-OH-D) of 59 nmol/L, in…
- Trial name
- NCT03544671
- Testing
- Vitamin D
- Where
- Mexico
- Volunteers
- 220 people, healthy volunteers welcome
- Sponsor
- Instituto Nacional de Salud Publica, Mexico
Hypovitaminosis D, Deficiency of Micronutrients
Investigation of Vitamin D3 Enriched, Reduced-fat Yellow Cheese Efficacy to Prevent Vitamin D Deficiency
The primary aim of the current study was to investigate whether the consumption of vitamin D3 enriched, reduced-fat yellow cheese can counterbalance the expected decrease in serum 25-hydroxyvitamin D concentration during winter…
- Trial name
- NCT02543671
- Testing
- vitamin D3 enriched, reduced-fat yellow cheese, plain (non-fortified) reduced-fat yellow cheese
- Where
- Greece
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- Harokopio University
Asthma, Asthma Exacerbations
Vitamin D In the Prevention of Viral-induced Asthma in Preschoolers
In this 7-month randomized controlled trial, children aged 1 to less than 6 years, with recurrent asthma attacks triggered mostly by colds, will receive a high dose of vitamin D or a placebo every 3.5 months during their usual…
- Conditions
- Asthma, Asthma Exacerbations, Preschool Child, Vitamin D
- Trial name
- DIVA (NCT03365687)
- Testing
- Vitamin D
- Where
- 9 sites in Canada
- Volunteers
- 323 people
- Sponsor
- Professor Francine Ducharme
Nutritional Status, Serum Biomarkers
A Study of a Dietary Supplement on Serum Biomarkers in Children
This is a pilot clinical study designed to evaluate the effects of a dietary supplement on selected blood-based nutritional biomarkers in healthy children aged 4 to 15 years.
- Trial name
- NCT07385144
- Testing
- Dietary Supplement (Kids Multi & Omegas)
- Where
- United States
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- SF Research Institute, Inc.
Polycystic Ovary Syndrome, Insulin Resistance
Endocrine and Menstrual Disturbances in Women With Polycystic Ovary Syndrome (PCOS)
Polycystic ovary syndrome (PCOS) is a common endocrine disorder in reproductive age women, which causes disordered follicle growth and ovulation resulting in infertility.
- Conditions
- Polycystic Ovary Syndrome, Insulin Resistance, Vitamin D Deficiency, Obesity
- Trial name
- EMDPCOS (NCT03652987)
- Where
- United Kingdom
- Volunteers
- 300 people
- Sponsor
- St George's, University of London
Diabetes Mellitus, Type 1
GAD-Alum (Diamyd) Administered Into Lymph Nodes in Combination With Vitamin D in Type 1 Diabetes (DIAGNODE-1)
The objectives of the main study is to: Evaluate the safety of giving GAD-Alum (Glutamic acid decarboxylase) (Diamyd) directly into lymph glands in combination with an oral vitamin D regimen Evaluate how the above mentioned…
- Trial name
- DIAGNODE (NCT02352974)
- Testing
- GAD-Alum, Vitamin D
- Where
- Sweden
- Volunteers
- 12 people
- Sponsor
- Johnny Ludvigsson
Vitamin D Deficiency, Covid19
Nutrition, Immunity, and Covid-19 in Obese People
The increased risk of transmission of COVID-19 infection causes the incidence of death in health workers to escalate. It requires further research on risk factors and intervention in health worker professionals, especially on…
- Conditions
- Vitamin D Deficiency, Covid19, Overweight and Obesity, Immune Deficiency
- Trial name
- NICO (NCT04979065)
- Testing
- Probiotics, Vitamin D
- Where
- 4 sites in Indonesia
- Volunteers
- 93 people, healthy volunteers welcome
- Sponsor
- Universitas Indonesia
Locally Advanced Cervical Cancer, Vitamin D Concentration
Vitamin D Status and Clinical Outcomes in Locally Advanced Cervical Cancer
Background. Definitive chemoradiotherapy represents the standard therapeutic approach for the management of locally advanced cervical cancer.
- Trial name
- CERVITAL (NCT07743918)
- Testing
- Pretreatment Vitamin D Assessment in Serum and Cervical Lavage Fluid
- Where
- Serbia
- Volunteers
- 100 people
- Sponsor
- University of Kragujevac
Vitamin D Status
Maintenance of Vitamin D Level by UVB Radiation
The purpose of the study is to determine the frequency of UVB radiations necessary to maintain the Vitamin D level during winter time.
- Trial name
- NCT01101243
- Testing
- Broadband UVB, Control group
- Where
- Denmark
- Volunteers
- 75 people, healthy volunteers welcome
- Sponsor
- Bispebjerg Hospital
Healthy Adult Participants, Vitamin D Insufficiency
Supplementation of Cholecalciferol and Related Active Metabolites Through Bioenhancing Layer's Eggs
The purpose of this research is to evaluate if 1) consumption of vitamin D3- or 25(OH)D3-biofortified eggs will increase vitamin D and 25(OH)D status in young adults who consume these bioenhanced eggs, 2) to determine if the gut…
- Trial name
- SCRAMBLE (NCT07859280)
- Testing
- Vitamin D3 bioenhanced eggs, 25(OH)D3 bioenhanced eggs
- Where
- United States
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Cornell University
Vitamin D Status
Vit D Receptor Gene Polymorphism
The present cross-sectional observational study was conducted after the university ethical committee approved the research (NU/CEC/2020/0339). This study included 376 adults in the age group of 18-40Yrs.
- Trial name
- VITAMIN D GENE (NCT05931705)
- Testing
- questionnaire
- Where
- India
- Volunteers
- 376 people
- Sponsor
- Ajman University
Bronchial Asthma, Vitamin D Deficiency
Vitamin D Status and Asthma Control, Pulmonary Function, and Oxidative Stress in Adults With Bronchial Asthma
Asthma is a chronic inflammatory airway disease associated with variable airflow limitation and persistent respiratory symptoms.
- Conditions
- Bronchial Asthma, Vitamin D Deficiency, Pulmonary Function Impairment, Oxidative Stress
- Trial name
- VD-ASTHMA (NCT07733635)
- Volunteers
- 134 people
- Sponsor
- Sinai University
Hypovitaminosis D
Cholecalciferol Supplementation for Sepsis in the ICU
Sepsis in a clinical entity that occurs in patients with serious infections. Though the severity of illness may vary, every year, approximately 1.6 million Americans are treated for sepsis.
- Trial name
- CSI (NCT01896544)
- Testing
- Cholecalciferol
- Where
- United States
- Volunteers
- 30 people
- Sponsor
- Massachusetts General Hospital
Overweight and Obesity
The Effect of Vitamin D Supplementation in Overweight and Obese Pregnant Women
To understand the role of vitamin D supplementation on pregnancy outcomes and metabolic status in overweight and obese pregnant women.
- Trial name
- NCT04841265
- Testing
- Vitamin D3
- Where
- Singapore
- Volunteers
- 274 people, healthy volunteers welcome
- Sponsor
- KK Women's and Children's Hospital
Vitamin D Deficiency
The Effect of Vitamin D3 Therapy on Vitamin D Status in Pregnant Women With Vitamin D Deficient and Insufficient
This study is a randomized controlled trial which compares the effect of vitamin D3 therapy 5,000 IU daily and 50,000 IU on 25(OH)D and 1,25(OH)2D, VDBP, and 24,25(OH)2D maternal serum levels in pregnant women with vitamin D…
- Trial name
- NCT06054919
- Testing
- Cholecalciferol
- Where
- Indonesia
- Volunteers
- 52 people, healthy volunteers welcome
- Sponsor
- Universitas Indonesia
Vitamin D Concentration
Vitamin D Satus in Adults With Newly Diagnosed ITP
Investigator study aims to assess the level of vitamin D in adult patients with newly diagnosed ITP and correlation between its level and treatment respose
- Trial name
- NCT07146555
- Testing
- No Interventions
- Volunteers
- 84 people, healthy volunteers welcome
- Sponsor
- Assiut University