Clinical trials: Vitamin D Status
Frailty, Physical Disability
Vitamin D and Calcium Supplementation at Danish Nursing Homes
Nursing home residents are in high risk of vitamin D deficiency, which negatively affects bone health. Vitamin D and calcium supplements have shown to increase bone density and reduce fracture risk and may affect daily physical…
- Conditions
- Frailty, Physical Disability, Aging, Muscle Weakness
- Trial name
- NCT04956705
- Testing
- Vitamin D and calcium
- Where
- 2 sites in Denmark
- Volunteers
- 109 people, healthy volunteers welcome
- Sponsor
- University College Copenhagen
Premature Infants
Effect of Vitamin D in Diets of Preterm Infants
Transitional formulas (22 kcal/oz) are recommended for infants less than 35 weeks gestation at birth. However, few data are available related to follow-up of infants receiving these formulas who were 28-34 weeks gestation at…
- Trial name
- NCT01698840
- Testing
- Vitamin D
- Where
- United States
- Volunteers
- 39 people
- Sponsor
- Baylor College of Medicine
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
Vitamin D, Bones, Nutritional and Cardiovascular Status
Vitamin D is not seen anymore only as a phosphocalcic hormone, but also as having an effect on global health (anti-infective, anti-inflammatory, anti-tumour roles and cardiovascular protection).
- Trial name
- VITADOS (NCT01832623)
- Testing
- Exploration of Vitamin D roles
- Where
- France
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Hospices Civils de Lyon
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
Type 2 Diabetes, Nonalcoholic Fatty Liver Disease
Hepatic Dysfunction, Vitamin D Status, and Glycemic Control in Diabetes
This study is designed to study the effect of vitamin D intake on the severity of fatty liver and poor glucose control in patients with type 2 diabetes and fatty liver disease.
- Conditions
- Type 2 Diabetes, Nonalcoholic Fatty Liver Disease, Vitamin D Deficiency
- Trial name
- VDLS (NCT02132442)
- Where
- United States
- Volunteers
- 12 people
- Sponsor
- University of Massachusetts, Worcester
COVID-19
Vitamin D and COVID-19 Management
A novel coronavirus disease 2019 (COVID-19) outbreak is a global dramatic pandemic that is immeasurably impacting the communities.
- Trial name
- NCT04385940
- Testing
- Ddrops® products, 50,000 IU, Oral, Vitamin D3
- Where
- Canada
- Volunteers
- 11 people
- Sponsor
- University of Alberta
Knee Osteoarthritis, Vitamin D Deficiency
Prospective, Assessment of Vitamin D and Calcium Supplementation, Improvement of Nutritional Status and Preoperative Rehabilitation in Patients Before Knee Arthroplasty.
Prospective randomized study of 150 patients qualified for knee arthroplasty between 2015 and 2017. Patients were randomized into 3 groups receiving vitamin D and calcium supplementation, increased protein supply and preoperative…
- Conditions
- Knee Osteoarthritis, Vitamin D Deficiency, Pain, Postoperative, Arthropathy of Knee
- Trial name
- NCT04291833
- Testing
- Intervention group 1, Intervention group 2, Control group 0
- Where
- Poland
- Volunteers
- 150 people
- Sponsor
- Jagiellonian University
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 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
Chronic Kidney Disease
Two Vitamin D Dosing Strategies in Children With Chronic Kidney Disease
Vitamin D deficiency is common in the general population and more common in children with chronic kidney disease. Vitamin D is very important for bone health, especially in children with chronic kidney disease.
- Trial name
- NCT01909115
- Testing
- 1000 IU of Vitamin D3, 4000 IU of Vitamin D3
- Where
- United States
- Volunteers
- 98 people
- Sponsor
- Emory University
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
Vitamin D Biofortification, Vitamin D Fortification
Vitamin D (Bio)Fortified Shopping Baskets to Improve Vitamin D Status
Vitamin D is essential for healthy bones, muscles, and immune function. It comes from food, supplements, and sunlight. There are two main forms; vitamin D2, found mainly in plant foods, and vitamin D3, which comes from animal…
- Conditions
- Vitamin D Biofortification, Vitamin D Fortification, Vitamin D Status
- Trial name
- NCT07349290
- Testing
- Vitamin D (bio)fortified food basket, Control food basket
- Where
- United Kingdom
- Volunteers
- 160 people, healthy volunteers welcome
- Sponsor
- University of Ulster
Vitamin D Deficiency, Sickle Cell Disease
Vitamin D Status in Children With Sickle Cell Disease Living in Lyon, France
Vitamin D deficiency may be under-diagnosed in sickle cell disease French children. Therefore, the investigator need an epidemiologic study about the prevalence of vitamin D deficiency in this specific population.
- Trial name
- EVADDREP (NCT04694976)
- Testing
- 25-OH Vitamin D measure
- Where
- France
- Volunteers
- 130 people
- Sponsor
- Hospices Civils de Lyon
Celiac Disease
Celiac Disease and Vitamin Status: Evaluation of the Effect of Supplementation With a Probiotic (VIVOMIXX®) in a Cohoort of Celiac Patients
Celiac disease is a disorder caused by a disregulation of the immune system which leads to immune response to gluten. Diet therapy is the gold standard of treatment, and the only effective one.
- Trial name
- VIVOMIXX (NCT04160767)
- Testing
- Probiotic Vivomixx, Gluten free diet
- Where
- Italy
- Volunteers
- 90 people
- Sponsor
- University of Milan
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
Prevention of Vitamin D Deficiency
Breastfed infants living in a northern location (41 degrees N) are at high risk of vitamin D deficiency during winter. This trial is designed to determine how much supplemental vitamin D breastfed infants need to receive in order…
- Trial name
- NCT00494104
- Testing
- Vitamin D drops, 200 or 400 or 600 IU/day or 800 IU/day
- Where
- United States
- Volunteers
- 398 people, healthy volunteers welcome
- Sponsor
- Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
Vitamin D Deficiency, Injuries
Vitamin D Status Among Competitive Female Gymnast and Swimmers After Winter Time
As indoor athletes, competitive gymnasts and swimmers can face the problem of a potential vitamin D deficiency. In the last decades, indoor sports participants have been faced with the problem of an institutionalized lifestyle…
- Conditions
- Vitamin D Deficiency, Injuries, Cardiovascular Risk Factor, Nutritional Deficiency
- Trial name
- NCT03584256
- Where
- Slovenia
- Volunteers
- 31 people
- Sponsor
- University of Ljubljana
Inflammation, Infection
Vitamin D Status Impacts Inflammation and Risk of Infections During Pregnancy
The goal of this study is to characterize the function and efficacy of the bioactive nutrient, vitamin D, in relation to infection and inflammatory status across pregnancy.
- Trial name
- NCT01815047
- Testing
- Vitamin D3 Supplementation
- Where
- United States
- Volunteers
- 85 people, healthy volunteers welcome
- Sponsor
- Cornell University
Vitamin D Status
Vitamin D Supplementation and Immunity/Physical Performance
The purpose of this study is to examine the effect of vitamin D supplementation on vitamin D status, immunity and physical performance.
- Trial name
- NCT03132103
- Testing
- Oral Vitamin D3, Solar simulated radiation (SSR)
- Where
- United Kingdom
- Volunteers
- 260 people, healthy volunteers welcome
- Sponsor
- Bangor University