Clinical trials: Deficiency Vitamins
Hemodyalysis, Kidney Tansplant
Assessment of Mineral and Bone Disorders in Kidney Transplant Recipients
This study aims to integrate bone measurements (including bone turnover markers (BTM), bone mineral density (BMD) measurement, vertebral fracture assessment (VFA), trabecular bone score (TBS) ) commonly used in the general…
- Conditions
- Hemodyalysis, Kidney Tansplant, Osteoporosis, CKD-MBD - Chronic Kidney Disease Mineral and Bone Disorder
- Trial name
- NCT07141043
- Where
- Romania
- Volunteers
- 180 people, healthy volunteers welcome
- Sponsor
- Grigore T. Popa University of Medicine and Pharmacy
Vitamin D Deficiency
Optimization of Blood Levels of 25(OH)-Vitamin D in African Americans
Two-thirds of the US population, particularly African Americans (AA), is at risk for inadequate or deficient 25-hydroxy-vitamin D (25(OH)VD).
- Trial name
- NCT04939792
- Testing
- Vitamin D, Vitamin D + L-cysteine, L-cysteine
- Where
- United States
- Volunteers
- 165 people, healthy volunteers welcome
- Sponsor
- Louisiana State University Health Sciences Center Shreveport
Vitamin D Deficiency, Vitamin D Insufficiency
ALPCO 25(OH) Vitamin D CLIA Kit - Fresh Versus Frozen Serum and Plasma Stability Study
This study evaluates the stability of 25-hydroxyvitamin D [25(OH)D] measurements in human serum and plasma using the ALPCO 25(OH) Vitamin D CLIA Kit.
- Conditions
- Vitamin D Deficiency, Vitamin D Insufficiency, Healthy Volunteers
- Trial name
- NCT07565064
- Testing
- ALPCO 25(OH) Vitamin D CLIA Kit
- Where
- United States
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- American Laboratory Products Company
Hypovitaminosis D
Vitamin D, Blood Pressure, Lipids, Infection and Depression
There are numerous indications for a relation between low serum levels of 25(OH)D and blood pressure, lipid levels, frequency of infections and tendency towards depression.
- Trial name
- NCT00960232
- Testing
- Cholecalciferol
- Where
- Norway
- Volunteers
- 250 people, healthy volunteers welcome
- Sponsor
- University of Tromso
Rickets, Osteomalacia
Maternal and Infant Vitamin Status During the First Nine Months of Infant Life
In this study the investigators wanted to assess vitamin D status and possible consequences of low plasma 25-hydroxyvitamin D levels in a population of healthy mothers and their infants, in the community of Aarhus, Denmark.
- Conditions
- Rickets, Osteomalacia, Osteoporosis
- Trial name
- NCT02548520
- Testing
- Blood and breastmilk samples
- Where
- Denmark
- Volunteers
- 107 people, healthy volunteers welcome
- Sponsor
- University of Aarhus
Menopause Related Conditions, Vitamin D Deficiency
Vitamin D and Microvascular Function in Postmenopausal Women
Many observational studies have demonstrated links between serum levels of 25-hydroxyvitamin D [25(OH)D] and cardiovascular risk (CVR) factors. Microvascular dysfunction relates not only to CVR but also to metabolic disease.
- Conditions
- Menopause Related Conditions, Vitamin D Deficiency, Cardiovascular Diseases
- Trial name
- NCT05408273
- Testing
- Blood samples and Microvascular function assessment evaluated through laser-Doppler flowmetry by the LASER speckle contrast analysis (LASCA) device
- Where
- Brazil
- Volunteers
- 88 people, healthy volunteers welcome
- Sponsor
- Rio de Janeiro State University
Iron Deficiency Anemia, Infectious Diseases
Efficacy Trial to Examine Efficacy of Multimicronutrient Home Supplementation in Infants
The objective of the program is to examine the efficacy of 6 month home micronutrient supplementation in Bedouin and Jewish children on improvements in nutritional status including measures of iron, ferritin, zinc and folic acid…
- Conditions
- Iron Deficiency Anemia, Infectious Diseases, Undernutrition
- Trial name
- NCT00276198
- Testing
- Sprinkles, Ferripel-3, Vitamins A&D drops
- Where
- Israel
- Volunteers
- 771 people, healthy volunteers welcome
- Sponsor
- Soroka University Medical Center
Vitamin D Deficiency
The 'Hidden' Biological Impact of Vitamin D Deficiency: a Biomarker Study; Part 2
The investigators major aims are to: determine the vitamin D status of a group of young, apparently healthy adults in Hong Kong; examine inter-relationships between vitamin D status and biomarkers of DNA damage and repair…
- Trial name
- NCT02451787
- Testing
- Vitamin D
- Where
- Hong Kong
- Volunteers
- 27 people, healthy volunteers welcome
- Sponsor
- The Hong Kong Polytechnic University
Maternal Care Patterns, Child Nutrition Disorders
Relationship Between Maternal Awareness About Vitamin D for Under- Five Years Children and Their Health Status Outcomes
The observational study aims to identify the relationship between maternal awareness about vitamin D for under-five-year-old children and their health status outcomes.
- Conditions
- Maternal Care Patterns, Child Nutrition Disorders, Vitamin D Deficiency
- Trial name
- Vit-D (NCT06562426)
- Testing
- Descriptive group on vitamin D awareness
- Where
- Egypt
- Volunteers
- 300 people, healthy volunteers welcome
- Sponsor
- Alexandria University
Stroke, Oral Disease
Oral Health and Vitamin D in Stroke Patients
Stroke is a common, serious and restrictive global health problem. Restricting the activities of daily living of stroke patients impairs patients' ability to pay attention to oral hygiene.
- Conditions
- Stroke, Oral Disease, D Vitamin Deficiency
- Trial name
- NCT05418335
- Testing
- Clinical examination, functional status evaluation
- Where
- Turkey (Türkiye)
- Volunteers
- 90 people, healthy volunteers welcome
- Sponsor
- Abant Izzet Baysal University
Vitamin D Metabolism is in Chronic Kidney Disease
Vitamin D Metabolism in Chronic Kidney Disease Patients
To determine whether or not chronic kidney disease (CKD), stages III-V and ESRD , is associated with altered vitamin D metabolism related to fibroblast growth factor-23 (FGF-23) stimulation of Cyp24 and whether they have…
- Trial name
- NCT01528176
- Testing
- 10,000 IU of cholecalciferol for a total of 8 weeks
- Where
- United States
- Volunteers
- 70 people, healthy volunteers welcome
- Sponsor
- Memphis VA Medical Center
Hypovitaminosis D, Insulin Resistance
Comparative Effectiveness of Vitamin D and Repletion Strategies
The importance of vitamin D (VitD) in the prevention and treatment of human health conditions has gained increased attention in recent years.
- Conditions
- Hypovitaminosis D, Insulin Resistance, Diabetes
- Trial name
- CEDARS (NCT01524874)
- Testing
- Vitamin D3
- Where
- 2 sites in United States
- Volunteers
- 66 people, healthy volunteers welcome
- Sponsor
- Bastyr University
Iron Deficiency, Folic Acid Deficiency
Relative Bioavailability of Iron and Folic Acid in New Test Supplement
Deficiencies of iron and folic acid during pregnancy can lead to adverse outcomes for the fetus, thus supplements are recommended. Adherence to current tablet-based supplements is documented to be poor.
- Trial name
- NCT00789490
- Testing
- Daminaide 995 - SuppleFem Sprinkles, Materna
- Where
- Canada
- Volunteers
- 18 people, healthy volunteers welcome
- Sponsor
- University of Toronto
Schizophrenia, Metabolic Syndrome
The Influence of Vitamin D on Atypical Antipsychotic-induced Weight Gain
Schizophrenia and bipolar disorders are major public health problems. The second generation anti-psychotic drugs have efficacy for both positive and negative symptoms and a favorable risk profile as far as movement disorders.
- Conditions
- Schizophrenia, Metabolic Syndrome, Vitamin D Deficiency
- Trial name
- NCT02281162
- Testing
- Blood Draw
- Where
- United States
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Creighton University
Vitamin D Deficiency
Vitamin D3 Supplementation Pilot Study
The purpose of this research study is to determine whether taking vitamin D, every day, over a 12 week period will improve the vitamin D status, risks for poor heart health, risks for developing type 2 diabetes, and/or muscle…
- Trial name
- NCT01546103
- Testing
- Cholecalciferol
- Where
- United States
- Volunteers
- 39 people, healthy volunteers welcome
- Sponsor
- Children's Hospital of Philadelphia
Vitamin D3 Deficiency
Vitamin D as a Factor Modifying Adaptation to Exercise
Physical activity is a recommended, indispensable element of a healthy lifestyle as well as a countermeasure against many diseases often accompanied by the acute or chronic low grade inflammation.
- Trial name
- NCT03417700
- Testing
- NW training, HICT
- Where
- 2 sites in Poland
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Gdansk University of Physical Education and Sport
Vitamin B12 Deficiency
Autoantibodies to Gastric Parietal Cells in Rheumatoid Arthritis Patients
A review of the literature reveals that very few studies have assessed the potential co-existence of vitamin B12 deficiency due to gastric parietal cell autoantibodies. While Segal et al.
- Trial name
- NCT01876329
- Where
- United States
- Volunteers
- 125 people, healthy volunteers welcome
- Sponsor
- Keesler Air Force Base Medical Center
COVID-19 Pandemic, D Vitamin Deficiency
Impact of Vitamin D Supplementation on COVID-19 Vaccine Response and IgG Antibodies in Deficient Women.
Decreased immunity in individuals causes a decrease in vaccine response, and vitamin D worsens this course. Vitamin D is thought to be a vitamin that can strengthen the innate immune response, inhibit the adaptive system, and…
- Conditions
- COVID-19 Pandemic, D Vitamin Deficiency, Antibody Hypersensitivity
- Trial name
- CoVıD-19 (NCT05447065)
- Testing
- Vitamin D supplement
- Where
- Turkey (Türkiye)
- Volunteers
- 33 people, healthy volunteers welcome
- Sponsor
- Ege University
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
Vitamin D Deficiency
Replenishing and Maintaining Vitamin D Status in Older Adults in Residential Care Facilities in NI
The vitamin D status of older adults in residential care facilities in Northern Ireland (NI) is currently unknown. An observation study is currently being carried out by Ulster University and the Western Health \& Social Care…
- Trial name
- NCT04395638
- Testing
- 3200IU Vitamin D3 per day for 8 weeks, 20,000IU Vitamin D3 per week for 8 weeks
- Where
- United Kingdom
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- University of Ulster