Clinical trials: Vitamin D Status
Asthmatic Crisis, Wheezing
Optimizing Vitamin D Status in Children With Wheeze / Asthma (OPTIVIT)
Vitamin D deficiency is highly prevalent in the UK. Research shows that vitamin D enhances the immune system and may help protect against chest infections that can cause wheezing illness or worsen asthma symptoms.
- Trial name
- OPTIVIT (NCT02880930)
- Testing
- Fultium-D3 drops (Internis)
- Where
- United Kingdom
- Volunteers
- 40 people
- Sponsor
- Queen Mary University of London
Bullosa Epidermolysis, Vitamin D Deficiency
Vitamin D Status and Bone Metabolism Status in Children With Congenital Epidermolysis Bullosa
This retrospective prospective study is aimed at studying the level of vitamin D supply and identifying markers of bone tissue remodeling in order to develop approaches to the prevention of osteopenia and osteoporosis in children…
- Conditions
- Bullosa Epidermolysis, Vitamin D Deficiency, Osteoporosis, Osteopenia
- Trial name
- NCT05141838
- Testing
- Vitamin D, Oral nutritional supplement
- Where
- Russia
- Volunteers
- 110 people
- Sponsor
- National Medical Research Center for Children's Health, Russian Federation
Burns, Bone Demineralization
Evaluation of Vitamin D Status in Children With Acute Burns
To see which vitamin D supplement (D2 vs D3) is most beneficial in burned children.
- Trial name
- VitaminD (NCT00536276)
- Testing
- Vitamin D2, Vitamin D3
- Where
- United States
- Volunteers
- 50 people
- Sponsor
- Shriners Hospitals for Children
Polycystic Ovary Syndrome, Vitamin D Deficiency
Association of Vitamin D Status With Metabolic Markers in Adolescents With Polycystic Ovary Syndrome
This prospective cross-sectional case-control study aims to investigate the relationship between serum vitamin D levels, visceral adipose tissue (VAT) thickness, and metabolic parameters in adolescents diagnosed with polycystic…
- Conditions
- Polycystic Ovary Syndrome, Vitamin D Deficiency, Insulin Resistance
- Trial name
- NCT06970821
- Where
- Turkey (Türkiye)
- Volunteers
- 106 people, healthy volunteers welcome
- Sponsor
- Bagcilar Training and Research Hospital
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
Asthma in Children
Respiratory Outcome of Children From the FEPED Cohort
Early lung function deficits represent a significant risk factor for the evolution toward chronic obstructive pulmonary disease later in life.
- Trial name
- RESPIFEPED (NCT03229317)
- Testing
- Plethysmography
- Where
- 3 sites in France
- Volunteers
- 142 people
- Sponsor
- Assistance Publique - Hôpitaux de Paris
Nutrition Status of Chinese Residents
Nutritional Status of Chinese Residents
In this study, we analyzed the nutritional status of Chinese residents aged above 6y. The indicators such as the hemoglobin, vitamin D, vitamin A and TG, TC and HDLC were also included.
- Trial name
- NCT03660527
- Testing
- Not refered
- Volunteers
- 41,420 people, healthy volunteers welcome
- Sponsor
- Centers for Disease Control and Prevention, China
Vitamin D Deficiency
Vitamin D of Chinese Children and Adolescents
The aim of this study was to assess the vitamin D status and analyze risk factors for vitamin D inadequacy of Chinese children and adolescents aged 6-17y.
- Trial name
- NCT03221972
- Where
- China
- Volunteers
- 15,000 people
- Sponsor
- Lichen Yang
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.
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
Pediatric Fractures, Hypovitaminosis D
Bone Outcomes, Obesity, Sunlight, and Trauma in Children
Prospective case-control study of children (3-15 years) after low-energy trauma. We compare serum bone metabolic markers (25OHD, PTH, ALP, calcium, phosphate), BMI/percentile, and dietary calcium intake between fracture and…
- Conditions
- Pediatric Fractures, Hypovitaminosis D, Obesity and Overweight
- Trial name
- BOOST (NCT07143552)
- Where
- 2 sites in Italy
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Paracelsus Medical University
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)
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
Healthy Volunteers
Sunlight Exposure and Vitamin D Status of Children of South Asian Ethnicity Living in the UK
The purpose of this study is to examine the amount of sunlight exposure and vitamin D status of adolescent schoolchildren of South Asian ethnicity in each season throughout the year.
- Trial name
- NCT01623414
- Where
- United Kingdom
- Volunteers
- 131 people, healthy volunteers welcome
- Sponsor
- University of Manchester
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
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
Early Childhood Caries, Vitamin D Deficiency
Vitamin D Status With Early Childhood Caries
Studies that give people vitamin D supplements to prevent caries have found that vitamin D is effective at preventing the development of caries.
- Trial name
- NCT03521492
- Testing
- serum vitamin D , calcium , parathyroid hormone and albumin level
- Where
- Saudi Arabia
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Ministry of Health, Saudi Arabia
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
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
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