Clinical trials: Deficiency, Vitamin D
Vitamin D Deficiency, End-stage Renal Disease
Impact of Vitamin D Repletion in Hemodialysis Patients
Dialysis patients often suffer from defects in their immune system (that part of the body which fights infection). Evidence suggests that Vitamin D deficiency may have a negative effect on immunity, and many dialysis patients are…
- Trial name
- NCT01175798
- Testing
- Cholecalciferol
- Where
- United States
- Volunteers
- 116 people
- Sponsor
- Mehrotra, Anita, M.D.
Hypophosphatemic Rickets, X-Linked Dominant
Effect of Cinacalcet on Parathyroid Hormone Secretion in Children and Adolescents With Hypophosphatemic Rickets
This study will measure the effect of cinacalcet (Sensipar) on parathyroid hormone (PTH) secretion in children and adolescents with hypophosphatemic rickets (XLH).
- Trial name
- NCT00195936
- Testing
- Cinacalcet
- Where
- United States
- Volunteers
- 8 people
- Sponsor
- Children's Mercy Hospital Kansas City
Vitamin D Deficiency, Chronic Pain Syndrome
The Immune and Clinical Impacts of Vitamin D in Patients With Chronic Musculo-skeletal Pain
Vitamin D3 is produced in the skin following exposure to UVB light from the sun or artificial sources, and occurs naturally in a small range of foods.More recently, several reports underlined the impact of vitamin D on the…
- Conditions
- Vitamin D Deficiency, Chronic Pain Syndrome, Inflammatory Response
- Trial name
- NCT01417923
- Testing
- vitamin D
- Where
- Israel
- Volunteers
- 80 people
- Sponsor
- Meir Medical Center
Nutritional Status, Nutrient Deficiency
Dietary Challenges in the Population of Nursing Homes' Residents
To obtain up-to-date data on nutritional status of older adults, a national dietary survey will be conducted in 2022/2023, providing data on the consumption of foods and enabling the assessment intakes of energy and specific…
- Conditions
- Nutritional Status, Nutrient Deficiency, Micronutrient Deficiency, Vitamin D Deficiency
- Trial name
- NUTRICARE (NCT05389618)
- Testing
- Diagnostic Tests
- Where
- Slovenia
- Volunteers
- 300 people
- Sponsor
- Institute of Nutrition, Slovenia (Nutris)
Vitamin D Deficiency
OASIS Study: Vitamin D Deficiency Prevention Among Older Adults in Ireland
Vitamin D deficiency is common. It is caused by limited sun availability together with a low supply of vitamin D in the food system. There is a high prevalence of low vitamin D status around the world.
- Trial name
- OASIS (NCT06705582)
- Testing
- Fortified Bread, Unfortified bread
- Where
- 2 sites in Ireland
- Volunteers
- 117 people, healthy volunteers welcome
- Sponsor
- University College Cork
Polycystic Ovarian Syndrome, Vitamin D Deficiency
Health Benefits of Vitamin D and Calcium in Women With PCOS (Polycystic Ovarian Syndrome)
The investigators conducted a prospective un-blinded pilot study of Vitamin D plus Calcium (Ca) supplementation in overweight (BMI > 27) premenopausal women diagnosed with Polycystic Ovarian Syndrome (PCOS), as defined by the…
- Trial name
- NCT00743574
- Testing
- Vitamin D2 (Ergocalciferol), Medroxyprogesterone (Provera), Vitamin D3 (Cholecalciferol)
- Where
- United States
- Volunteers
- 36 people
- Sponsor
- Yale University
Nutritional Status, Nutrient Deficiency
Challenges in Achieving Adequate Dietary Status of Women
The aim of the study is to investigate the dietary habits of women of reproductive age (20-49 years). We aim to obtain epidemiological data on the intake and adequacy of key macronutrients and micronutrients, as well as to…
- Conditions
- Nutritional Status, Nutrient Deficiency, Micronutrient Deficiency, Vitamin D Deficiency
- Trial name
- NutriFem (NCT06745817)
- Testing
- Assessement of nutritional status, Dermis density and thickness, Skin elasticity
- Where
- 3 sites in Slovenia
- Volunteers
- 300 people, healthy volunteers welcome
- Sponsor
- Institute of Nutrition, Slovenia (Nutris)
Kidney Transplantation, Vitamin D Deficiency
Vitamin D Replacement After Kidney Transplant
Vitamin D deficiency accelerates vascular risk progression after kidney transplant.
- Trial name
- NCT00748618
- Testing
- Standard vitamin D3 treatment, High dose vitamin D3 treatment
- Where
- United States
- Volunteers
- 116 people
- Sponsor
- University of Nebraska
Vitamin D Deficiency, Vitamin D Insufficiency
The Effects of Serum Vitamin D and IVF Outcome
The purpose of this study is to investigate whether an association exists between serum vitamin D levels and IVF treatment outcome
- Conditions
- Vitamin D Deficiency, Vitamin D Insufficiency, Infertility
- Trial name
- VIDIO (NCT02187146)
- Where
- United Kingdom
- Volunteers
- 504 people, healthy volunteers welcome
- Sponsor
- University of Birmingham
Vitamin D Deficiency
Vitamin D Supplementation D_SAF Pilot Study
This study is a randomised control trial (RCT) pilot study to determine the appropriate vitamin D dose for the main study. The pilot study includes three matched groups, which will form two vitamin D supplementation groups (at…
- Trial name
- NCT04033796
- Testing
- 25,000 IU, 50,000 IU
- Where
- 2 sites in United Kingdom
- Volunteers
- 532 people, healthy volunteers welcome
- Sponsor
- University of Surrey
Vitamin D Deficiency
Effect of Vitamin D3 and Omega-3FA on Leptin and HbA1C With Vitamin D Deficiency
The Combined effect of Vitamin D3 and Omega-3 supplements on serum leptin and Glycated hemoglobin (Hb A1C) levels in Jordanian people with vitamin D deficiency.
- Trial name
- NCT03735303
- Testing
- VD3 group, omega 3 FA group, VD3 and omega- 3FA group
- Where
- Jordan
- Volunteers
- 146 people, healthy volunteers welcome
- Sponsor
- Applied Science Private University
Deficiency of Vitamin D3
Study on the Effects of a Recommendation Based Supply of Vitamin D3 in Healthy Volunteers
The aim of this study is to investigate whether a supplementation of 20 µg Vitamin D3 per day for 12 weeks can be used to normalize vitamin d-Status
- Trial name
- NCT01711905
- Testing
- Vitamin D3
- Where
- Germany
- Volunteers
- 107 people, healthy volunteers welcome
- Sponsor
- Martin-Luther-Universität Halle-Wittenberg
Vitamin D Deficiency
Vitamin D Status in Hemodialysis Transplant Candidates and Living Donors
Vitamin D, beyond its classical role in calcium and phosphate metabolism, is recognized as an important regulator of immune function and inflammation.
- Trial name
- NCT07409623
- Testing
- VITAMIN D LEVEL
- Where
- Iran
- Volunteers
- 552 people
- Sponsor
- Shahid Beheshti University of Medical Sciences
Chronic Obstructive Pulmonary Disease, Muscle Weakness
Cholecalciferol Supplementation in Strengthening Inspiratory Muscles in Cholecalciferol-Deficient Patients With Chronic Obstructive Pulmonary Disease
This phase IIb randomized trial studies how well cholecalciferol (vitamin D3) supplementation works in strengthening inspiratory muscles in cholecalciferol-deficient patients with chronic obstructive pulmonary disease (COPD).
- Trial name
- NCT02877641
- Testing
- Cholecalciferol, Laboratory Biomarker Analysis, Multivitamin
- Where
- United States
- Volunteers
- 4 people
- Sponsor
- Roswell Park Cancer Institute
Hypertensive Disorder of Pregnancy, Vitamin D Deficiency
Vitamin D Deficiency With Selected Vitamin D Receptor Gene Polymorphism in Gestational Hypertension
This study aim to look into the prevalence of Vitamin D deficiency among Malaysian pregnant women and its associated risk factors.
- Trial name
- NCT05659173
- Testing
- Blood taking
- Where
- Malaysia
- Volunteers
- 180 people, healthy volunteers welcome
- Sponsor
- Universiti Putra Malaysia
Osteoporosis, Osteopenia
Does Treatment of Hypovitaminosis D Increase Calcium Absorption?
The purpose is to perform a one-year study designed to assess whether treatment of hypovitaminosis D increases intestinal absorption of calcium, subsequent retention of calcium within bone, decreases bone turnover, and favorably…
- Conditions
- Osteoporosis, Osteopenia, Vitamin D Deficiency, Hypoparathyroidism
- Trial name
- NCT00581828
- Testing
- Vitamin D
- Where
- United States
- Volunteers
- 19 people, healthy volunteers welcome
- Sponsor
- University of Wisconsin, Madison
Vitamin D Deficiency
Effect of Vitamin D-biofortified Eggs on Wintertime Serum 25-hydroxyvitamin D in Adults: Randomized Controlled Trial
While there have been a considerable number of studies on the impact of additional vitamin D in the diets of hens on the resulting egg vitamin D content, the effect of consumption of such vitamin D-enhanced eggs on vitamin D…
- Trial name
- EnhanceDeggs (NCT02678364)
- Testing
- Control eggs, Vitamin D3 eggs, 25-Hydroxyvitamin D3 eggs
- Where
- Ireland
- Volunteers
- 55 people, healthy volunteers welcome
- Sponsor
- University College Cork
Cystic Fibrosis, Vitamin D Deficiency
Cholecalciferol for Vitamin D in Adult Cystic Fibrosis (CF) Patients
The main aim of the research question to test the primary hypothesis of this study, namely, Does 12 weeks of an additional 5000 IU daily of cholecalciferol increase serum 25OHD levels in adults with Cystic Fibrosis (CF) who have…
- Trial name
- NCT00685971
- Testing
- 5000 IU of cholecalciferol
- Where
- Canada
- Volunteers
- 200 people
- Sponsor
- Unity Health Toronto
Kidney Transplantation, Anemia
Correcting Anemia and Native Vitamin D Supplementation in Kidney Transplant Recipients
The purpose of this study is to evaluate the effect of anemia correction and vitamin D supplementation in kidney transplant recipients.
- Conditions
- Kidney Transplantation, Anemia, Vitamin D Deficiency, Renal Insufficiency, Chronic
- Trial name
- CANDLE-KIT (NCT01817699)
- Testing
- High Hb target, cholecalciferol
- Where
- Japan
- Volunteers
- 161 people
- Sponsor
- CANDLE-KIT Trial Study Group
Vitamin D Deficiency, Obesity
Vitamin D and Adipose Tissue Inflammation
Chronic, low-grade adipose tissue inflammation is a major risk factor for type 2 diabetes mellitus. The cause of adipose tissue inflammation has remained largely unclear.
- Conditions
- Vitamin D Deficiency, Obesity, Type 2 Diabetes Mellitus, Intestinal Permeability
- Trial name
- NCT01477034
- Testing
- Vitamin D3
- Where
- United States
- Volunteers
- 18 people, healthy volunteers welcome
- Sponsor
- Fred Hutchinson Cancer Center
The first 1,020 results can be paged through. Add a filter or change the sort order to reach the rest.