Clinical trials: Vitamin D, open to volunteers
Bronchial Asthma, Vitamin D Deficiency
Vitamin D Status and Asthma Control, Pulmonary Function, and Oxidative Stress in Adults With Bronchial Asthma
Asthma is a chronic inflammatory airway disease associated with variable airflow limitation and persistent respiratory symptoms.
- Conditions
- Bronchial Asthma, Vitamin D Deficiency, Pulmonary Function Impairment, Oxidative Stress
- Trial name
- VD-ASTHMA (NCT07733635)
- Volunteers
- 134 people
- Sponsor
- Sinai University
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
Vitamin D Insufficiency, In Vitro Fertilization and Embryo Transfer
An Investigation of the Effect of Vitamin D Level During Frozen Embryo Transfer (FET) in IVF and Pregnancy Outcomes
Vitamin D is best known for keeping our bones healthy, but growing research suggests it may also play a role in fertility. Many In vitro fertilization (IVF) clinics now routinely check vitamin D levels and prescribe supplements…
- Trial name
- VitD in FET (NCT07681115)
- Testing
- No Intervention: Observational Cohort
- Where
- United Arab Emirates
- Volunteers
- 126 people
- Sponsor
- Fakih IVF Fertility Center
Dental Implant, Dental Implant Failed
Effect of Systemic Vitamin D on Dental Implant Osseointegration
The primary goal for any oral implantologist is to obtain satisfactory healing and long-term treatment success. Osseointegration is the key to dental implant success8 and is required to achieve direct structural and functional…
- Conditions
- Dental Implant, Dental Implant Failed, Vitamin D Deficiency
- Trial name
- VIDOS (NCT07684404)
- Testing
- Vit D
- Where
- Egypt
- Volunteers
- 10 people, healthy volunteers welcome
- Sponsor
- Future University in Egypt
Retinal Disease, Age-Related Macular Degeneration
Stem Cell Ophthalmology Treatment Study II
This study will evaluate the use of autologous bone marrow derived stem cells (BMSC) for the treatment of retinal and optic nerve damage or disease.
- Conditions
- Retinal Disease, Age-Related Macular Degeneration, Retinitis Pigmentosa, Stargardt Disease
- Trial name
- SCOTS2 (NCT03011541)
- Testing
- Arm 1
- Where
- 4 sites in United States, Austria and 1 more
- Volunteers
- 500 people
- Sponsor
- MD Stem Cells
Osteoporosis, Vitamin C Deficiency
Link Between ASCorbemia Level and Osteoporosis
This monocentric observational study aims to evaluate the association between plasma vitamin C levels (ascorbemia) and the presence of osteoporotic vertebral fractures in patients with osteoporosis.
- Conditions
- Osteoporosis, Vitamin C Deficiency, Vertebral Fractures
- Trial name
- ASCO (NCT07660484)
- Testing
- Plasma vitamin C assessment
- Where
- France
- Volunteers
- 40 people
- Sponsor
- Centre Hospitalier Universitaire de Nice
Benign Paroxysmal Positional Vertigo (BPPV)
Association Between Benign Paroxysmal Positional Vertigo and Vitamin D Deficiency .
Association between Benign Paroxysmal Positional Vertigo and Vitamin D deficiency
- Trial name
- NCT07491965
- Testing
- Vitamin D
- Where
- Egypt
- Volunteers
- 160 people
- Sponsor
- Sohag University
Vitamin D 25-Hydroxylase Deficiency, Vitamin D Deficiency/Insufficiency
Effects of High-Dose Vitamin D on Hormones, Neuromuscular Function, Cognition, and Body Composition in Athletes
This study aims to evaluate the effects of high-dose vitamin D3 supplementation on selected physiological, neuromuscular, and cognitive parameters in athletes.
- Trial name
- NCT07641075
- Testing
- Vitamin D supplementation
- Where
- Poland
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- The Jerzy Kukuczka Academy of Physical Education in Katowice
Periodontal Diseases, Gingivitis
The Effect of Vitamin D Supplementation on the Anti-inflammatory Response in Periodontal Diseases
A review of the literature revealed that while there are studies investigating the relationship between vitamin D and periodontal disease, there are no studies investigating the anti-inflammatory effect of vitamin D on…
- Conditions
- Periodontal Diseases, Gingivitis, Vitamin D Deficiency
- Trial name
- NCT07636733
- Testing
- Non-surgical periodontal treatment, Vitamin D administration, Oral Hygiene Education and Patient Motivation
- Where
- Turkey (Türkiye)
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- Recep Tayyip Erdogan University Training and Research Hospital
Obesity & Overweight, Vitamin D
Exercise Training and Vitamin D Metabolism
The prevalence of Vitamin D deficiency is significantly higher in adults with overweight/obesity compared to those with normal body mass index (BMI).
- Trial name
- Hybri-D (NCT07300332)
- Testing
- Exercise training, Control
- Where
- Greece
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- University of Thessaly
Prostate Cancer (Adenocarcinoma), Vitamin D on Tumor Response and Inflammatory Markers
Comparative Analysis of Immunological Responses to Vitamin D Replacement Therapy in Black and West African Men Diagnosed With Prostate Cancer: Elucidating Differential Effects on Immune Function Between Patients With Localized Disease and Those With Metastatic Progression
This study is testing whether fixing vitamin D deficiency in Black/West African men with prostate cancer can strengthen their immune system, improve quality of life, and even slow cancer progression compared to those who remain…
- Trial name
- iCCaRE (NCT07598032)
- Testing
- vitamin D 25(OH)D
- Where
- Nigeria
- Volunteers
- 200 people
- Sponsor
- University of Ilorin Teaching Hospital
Gingival Pigmentation, Depigmentation
Gingival Hyperpigmentation Treatment
It is a clinical study conducted to evaluate the effect of vitamin C and Glucathonine injection of pigmented gingival tissue versus surgical removal by scalpel
- Conditions
- Gingival Pigmentation, Depigmentation, Vitamin C, Glutathione
- Trial name
- NCT07595705
- Testing
- Vitamin c and glutathione, Surgical depigmentation
- Where
- Egypt
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Cairo University
Biomarkers of B-vitamin Status and Gut Microbiome Composition
Effect of a Food Intervention With a Prebiotic Alone or Combined With B-vitamins on Gut Microbiota Diversity, Inflammation and Mental Health Outcomes in Older Adults (GutFood)
Ageing is associated with changes in gut microbiota composition, increased inflammation, and a greater risk of poor mental health outcomes.
- Trial name
- NCT07592975
- Testing
- Inulin and B-vitamins, Inulin
- Where
- United Kingdom
- Volunteers
- 84 people, healthy volunteers welcome
- Sponsor
- University of Ulster
Vitamin A Deficiency, Idiopathic Scoliosis
Effect of Vitamin A Supplementation on Idiopathic Scoliosis
This study aims to investigate whether vitamin A supplementation can influence spinal curve magnitude in idiopathic scoliosis children and potentially prevent its de novo development.
- Trial name
- NCT07335991
- Testing
- Vitamin A, Nutritional Education
- Where
- China
- Volunteers
- 140 people
- Sponsor
- Second Affiliated Hospital of Wenzhou Medical University
Cardio-pulmonary Bypass, Cardiovascular Diseases
Dietary Supplements in Patients With Coronary Artery Bypass Grafting for Improving the Quality of Healthcare Delivery.
Cardiovascular disease (CVD) remains the leading cause of death worldwide. Prevention of CAD by targeting modifiable factors remains a key public health priority. L-Ascorbic Acid (Vitamin C - Vit.
- Conditions
- Cardio-pulmonary Bypass, Cardiovascular Diseases, Omega-3 Polyunsaturated Fatty Acids, Omega-3 Supplementation
- Trial name
- NCT06995586
- Testing
- Vitamin C, Omega 3 PUFA (EPO/DHA), Lignin, Lactulose
- Where
- Cyprus
- Volunteers
- 108 people
- Sponsor
- Nicosia General Hospital
Major Depressive Disorder (MDD), Hypovitaminosis D
Effect of Vitamin D Supplementation on Brain Waves in Female Major Depressive Disorder Patients With Hypovitaminosis D
Major Depressive Disorder (MDD) is a common mood disorder characterized by persistent sadness, loss of interest and cognitive impairment.
- Trial name
- NCT07579078
- Testing
- Dietary vitamin D
- Where
- Bangladesh
- Volunteers
- 34 people
- Sponsor
- Bangladesh Medical University
Acute Respiratory Infections, Critical Illness in Children
Serum Vitamin D Status in Critically Ill Children With Acute Respiratory Infections
Acute respiratory infections (ARIs) are among the leading causes of hospitalization, morbidity, and mortality in children worldwide, particularly among critically ill patients admitted to pediatric intensive care units (PICUs).
- Conditions
- Acute Respiratory Infections, Critical Illness in Children, Vitamin D Deficiency, Pediatric Respiratory Infections
- Trial name
- VITD-ARI (NCT06547749)
- Testing
- Serum 25-Hydroxyvitamin D Assessment
- Where
- Egypt
- Volunteers
- 63 people
- Sponsor
- Assiut University
Vitamin D, Vitamin B 12 and Folic Acid Concentrations, Micronutrient Status in Women of Reproductive Age
Vitamin B12, Folic Acid and Vitamin D Status in Women of Reproductive Age
This cross-sectional observational study aims to assess serum concentrations of vitamin B12, folic acid, and vitamin D in women of reproductive age in Herzegovina.
- Conditions
- Vitamin D, Vitamin B 12 and Folic Acid Concentrations, Micronutrient Status in Women of Reproductive Age, Vitamin Status Assessment
- Trial name
- NCT07100795
- Testing
- No Interventions
- Where
- Bosnia and Herzegovina
- Volunteers
- 360 people, healthy volunteers welcome
- Sponsor
- University of Mostar
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
Postnatal Women, Vitamin D
Pilates vs Aerobic Exercises on Vitamin D and Ionized Calcium in Postnatal
Vitamin D and calcium levels are negatively affected during postpartum period, making postnatal woman more vulnerable to health issues and consequently lowering her quality of life.
- Trial name
- NCT07566715
- Testing
- Exercise
- Where
- 2 sites in Egypt
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Adly A Adam