Clinical trials: Vitamin D Status
Type 2 Diabetes Mellitus, Obesity
Vitamin D Status and Lipid Profile in Obese Adults With Type 2 Diabetes
This prospective, single-center, cross-sectional observational study aims to evaluate the association between serum 25-hydroxyvitamin D concentrations and lipid profile parameters among adults with obesity and established type 2…
- Conditions
- Type 2 Diabetes Mellitus, Obesity, Dyslipidemia, Vitamin D Deficiency
- Trial name
- VILD-T2D (NCT07729553)
- Volunteers
- 150 people
- Sponsor
- Sinai University
Infertility
Impact of Vitamine D Status on in Vitro Fertilization Outcomes
Non skeletal effect of vitamin D have been the focus of much interest in the past decade. During the last years, special attention has been given to the impact of vitamin D on human reproduction.
- Trial name
- DFIV (NCT05048511)
- Testing
- vitamin D estimation
- Sponsor
- Nantes University Hospital
Neurotoxicity
Study to Assess Prevention of Oxaliplatin-induced Neurotoxicity Through Vitamin D Pathway
Many patients with cancer that are treated with a drug called oxaliplatin. This drug is used with other drugs to treat cancer. The drug can cause problems with the nerves in the hands and feet called peripheral neuropathy (a side…
- Trial name
- NCT01499940
- Testing
- Vitamin D3
- Where
- United States
- Volunteers
- 9 people
- Sponsor
- Gerald Higa, PharmD.
Vitamin D Status as Reflected by Serum 25-hydroxyvitamin D
Dietary Supplementation With 25-hydroxyvitamin D3 in Older Adults
The purpose of this study is to investigate whether a supplement of 25-hydroxyvitamin D is five-times more potent in raising vitamin D status (as reflected by serum 25(OH)D) compared to an equivalent amount of vitamin D3 in older…
- Trial name
- NCT01398202
- Testing
- vitamin D3, 25-hydroxyvitamin D3, 25-hydroxyvitamin D (20 microgram/day)
- Where
- Ireland
- Volunteers
- 56 people, healthy volunteers welcome
- Sponsor
- University College Cork
Obesity
Effect of Vitamin D3 Supplementation on Insulin Resistance and Cardiovascular Risk Factors in Obese Adolescents
The prevalence of obesity has reached epidemic proportions nationally as well as internationally. Currently, 16 % of American adolescents are obese.
- Trial name
- NCT00858247
- Testing
- Vitamin D3
- Where
- United States
- Volunteers
- 51 people, healthy volunteers welcome
- Sponsor
- Mayo Clinic
Vitamin D Status
Vitamin D Intervention in Infants
The study is a randomized, controlled, double blinded study evaluating the effect of recommended (400 IU) and 1 200 IU daily vitamin D substitution, given from 2 weeks to 2 years of age, on growth, bone development, neurologic…
- Trial name
- VIDI (NCT01723852)
- Testing
- Vitamin D at 30 ug/day, Vitamin D at 10 ug/day
- Where
- Finland
- Volunteers
- 1,000 people, healthy volunteers welcome
- Sponsor
- Helsinki University Central Hospital
Colon Cancer
Vitamin D and Screening Colonoscopy or Polyp Surveillance
The investigators will recruit DoD beneficiaries 18 years or older, that have been referred for a screening colonoscopy or polyp surveillance (or had one in the last 2 weeks), and have no previous diagnosis of colorectal cancer.
- Trial name
- VitDColon (NCT02269332)
- Testing
- Screening Colonoscopy
- Where
- United States
- Volunteers
- 298 people
- Sponsor
- Mike O'Callaghan Military Hospital
Healthy
Study Comparing Two Isoforms of Vitamin D Supplements for Infants
There are two different types of vitamin D - vitamin D3 (animal source) and vitamin D2 (plant source). Almost all the usual vitamin D preparations for infants available in Canadian pharmacies contain vitamin D3 which may not be…
- Trial name
- NCT01190137
- Testing
- Cholecalciferol (D3) or ergocalciferol (D2)
- Where
- Canada
- Volunteers
- 52 people, healthy volunteers welcome
- Sponsor
- McGill University
HCV
Impact of Metabolic Changes and Vitamin D Status on Virological Response in Patients With HCV Infection Treated by DAAs
1. Study Changes in lipid profile and the impact of Insulin resistance on virological response in patients with Hepatitis C viral infection treated by Direct Acting Antiviral agents 2.
- Trial name
- NCT03820102
- Volunteers
- 100 people
- Sponsor
- Assiut University
Hypovitaminosis D
Vitamin D Status and the Adequacy of Vitamin D Intake in Early Preterm Infants
Vitamin D is an essential nutrient. Deficiency of vitamin D is widespread. The prevalence of vitamin D deficiency in early preterm infants is unknown.
- Trial name
- NCT01793402
- Where
- United States
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- Children's Hospital Medical Center, Cincinnati
Food Allergy, Eczema
The Cork BASELINE Birth Cohort Study
The Departments of Paediatrics and Child Health, Obstetrics/Gynaecology and Nutritional Sciences, University College Cork, and the Department of Dermatology, Trinity College, Dublin have a unique and urgent opportunity to form a…
- Conditions
- Food Allergy, Eczema, Obesity
- Trial name
- BASELINE (NCT01498965)
- Where
- Ireland
- Volunteers
- 2,185 people, healthy volunteers welcome
- Sponsor
- National Children's Research Centre, Ireland
ANCA-associated Vasculitis, Granulomatosis With Polyangiitis
PRagmatic Analysis of Vitamin D in ANCA-Associated Vasculitis
This prospective study will assess if 12 months of vitamin D3 (cholecalciferol) supplementation, in patients with AAV (GPA, MPA, and EGPA) who have deficient or insufficient 25(OH)D3 status at enrollment, correlates with improved…
- Conditions
- ANCA-associated Vasculitis, Granulomatosis With Polyangiitis, Microscopic Polyangiitis, Eosinophilic Granulomatosis With Polyangiitis
- Trial name
- PRAVDA (NCT04280601)
- Testing
- vitamin D
- Where
- Canada
- Volunteers
- 102 people
- Sponsor
- Christian Pagnoux
Multiple Sclerosis
Role of Vitamin D in Reducing the Relapse Rate in Patients With Multiple Sclerosis
Vitamin D3 supplementation reduces the incidence of multiple sclerosis.Although clinical cross-sectional studies have demonstrated vitamin D3 as a positive mediator in preventing relapses and disease progression, prospective…
- Trial name
- NCT01753375
- Testing
- Vitamin D3
- Where
- Saudi Arabia
- Volunteers
- 200 people
- Sponsor
- AlJohara M AlQuaiz, M.D.
Healthy
Relative Efficacy of Vitamins D2 and D3 in Adult Humans
Vitamin D2 in chronic dosing will produce less of an elevation of serum 25(OH)D than will the same dose of vitamin D3.
- Trial name
- NCT01139840
- Testing
- vitamin D2, vitamin D3
- Where
- United States
- Volunteers
- 32 people, healthy volunteers welcome
- Sponsor
- Creighton University
Healthy, Vitamin D Deficiency
Can Correction of Low Vitamin D Status in Infancy Program for a Leaner Body Composition?
One in four infants are born with low amounts of vitamin D stored in their body. This study is designed to test whether improving vitamin D status quickly after birth helps infants to build muscle and to normalize growth.
- Conditions
- Healthy, Vitamin D Deficiency, Gestational Diabetes
- Trial name
- NCT02563015
- Testing
- cholecalciferol, Reference 400
- Where
- Canada
- Volunteers
- 139 people, healthy volunteers welcome
- Sponsor
- McGill University
Vitamin d Deficiency
Therapeutic Benefit of Preoperative Supplemental Vitamin D in Patients Undergoing Major Surgical Procedures.
Vitamin D (Vitamin D) deficiency is very common. We recently showed that 97% of 204 patients admitted to Truman Medical Center were Vitamin D deficient (<30 ng/ml).
- Trial name
- NCT02138591
- Testing
- Blood draw pre-operatively, Blood draw post-operative Day 1, Blood draw post-operative Day 2
- Where
- United States
- Sponsor
- University of Missouri, Kansas City
Vitamin D Deficiency, Obstructive Sleep Apnea
Vitamin D Status in Obstructive Sleep Apnea With and Without Comorbidities
This retrospective observational study evaluates the relationship between vitamin D status and obstructive sleep apnea (OSA) in adults.
- Trial name
- NCT07788391
- Where
- Turkey (Türkiye)
- Volunteers
- 269 people, healthy volunteers welcome
- Sponsor
- Hisar Intercontinental Hospital
Pregnancy
Vitamin D Status and Metabolism in Human Pregnancy
The purpose of the present study is to understand the effect of pregnancy on vitamin D metabolism and requirements as well as the modulatory role of the placenta in vitamin D metabolism during pregnancy.
- Trial name
- NCT03051867
- Where
- United States
- Volunteers
- 47 people, healthy volunteers welcome
- Sponsor
- Cornell University
Nutritional Status, Nutrient Deficiency
Adults Nutrition as a Protective or Health-risk Factor
To obtain up-to-date data on nutrient intakes in adults, a national dietary survey - the EU Menu study will be conducted during 12 consecutive months in 2017/2018, providing data on the consumption of foods and enabling the…
- Conditions
- Nutritional Status, Nutrient Deficiency, Micronutrient Deficiency, Vitamin D Deficiency
- Trial name
- NUTRIHEALTH (NCT03284840)
- Testing
- Assessement of nutritional status, Thyroid size
- Where
- 3 sites in Slovenia
- Volunteers
- 280 people, healthy volunteers welcome
- Sponsor
- Institute of Nutrition, Slovenia (Nutris)
Sepsis, Severe Sepsis
Vitamin D Status in Patients With Severe Sepsis
Sepsis is a clinical entity that complicates infection. Without early recognition and timely management, it can rapidly progress to severe sepsis, septic shock, and culminate in multiple organ dysfunction syndrome.
- Conditions
- Sepsis, Severe Sepsis, End Organ Damage, Multi Organ Failure
- Trial name
- ViDISS (NCT02684487)
- Testing
- vitamin D3
- Where
- United States
- Sponsor
- Massachusetts General Hospital