Clinical trials: Deficiency Vitamins
Pre-Eclampsia, Depression
Preeclampsia Research on Vitamin D, Inflammation, & Depression
This study is designed to comprehensively investigate the anti-inflammatory role of vitamin D in reproductive aged women, and its association with preeclampsia and depression.
- Conditions
- Pre-Eclampsia, Depression, Inflammation, Vitamin D Deficiency
- Trial name
- PROVIDE (NCT03018132)
- Testing
- mental health screening, education and referral program
- Where
- United States
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- Cedars-Sinai Medical Center
Hypovitaminosis D
The Effectiveness of a Weight-dependent Algorithm for Dosing Vitamin D.
Vitamin D is essential for calcium absorption and bone growth, brain development, and immune system function. Vitamin D is produced by the body in response to natural sunlight.
- Trial name
- NCT07876843
- Testing
- Vitamin D3, Calcium, and Vitamin C
- Where
- United States
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- Atlantic Health System
Vitamin D Deficiency
Vitamin D Status and Its Influencing Factors in Zhejiang Province: A Multicenter Cross-Sectional Study
Vitamin D deficiency is a global public health problem, with an estimated 1 billion people affected worldwide, and large-scale systematic data for Zhejiang Province remain scarce.
- Trial name
- NCT07866391
- Where
- 2 sites in China
- Volunteers
- 10,000 people, healthy volunteers welcome
- Sponsor
- First Affiliated Hospital of Zhejiang University
Vitamin D Deficiency
Bone Myoregulation Reflex and Postural Control in Vitamin D Deficiency
This observational study aims to investigate the relationship between vitamin D deficiency, postural stability, and neuromuscular control mechanisms in adults.
- Trial name
- BMR-VITD (NCT07435935)
- Where
- Turkey (Türkiye)
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- Istanbul Physical Medicine Rehabilitation Training and Research Hospital
Deficiencies Micronutrient, Nutrition Disorders
Effect of Consuming Vitamin A-fortified Sugar on Serum Retinol Levels in Children
The increase in vitamin A deficiency (<20 mcg/dL) among children under five in Colombia (2010-2015) is a public health problem (27.3%).
- Trial name
- NCT07860060
- Testing
- white sugar fortified with retinol, refined white sugar for culinary use
- Where
- Colombia
- Volunteers
- 76 people, healthy volunteers welcome
- Sponsor
- Universidad del Valle, Colombia
Vitamin D Deficiency, Pregnancy
Effects of Vitamin D on Health Promotion During Pregnancy and Its Impact on Prematurity-Related Outcome
The VitDTracking study focuses on the relevance of maternal vitamin D levels and their association with prematurity, aiming to improve maternal and child health outcomes, particularly by reducing avoidable preterm births.
- Trial name
- VitDTracking (NCT06292195)
- Testing
- Exposure
- Where
- 3 sites in Portugal
- Volunteers
- 2,000 people, healthy volunteers welcome
- Sponsor
- University of Évora
Infant Vitamin K Status, Vitamin K Deficiency Bleeding
The OK Daily Study
The OK Daily Study is a multi-centred, part-randomised, part blinded, four cohort study. We are exploring daily dietary supplementation with vitamin K2, specifically menaquinone-7 (MK-7), given to breastfed infants or…
- Trial name
- NCT07620236
- Testing
- Combined MK-7 + vitamin D3 drops, Vitamin D3 Drops, MK-7 capsules
- Volunteers
- 134 people, healthy volunteers welcome
- Sponsor
- Norfolk and Norwich University Hospitals NHS Foundation Trust
Vitamin Deficiencies
Trial Comparing Elan Specialized Bariatric Supplements With Standard Multivitamins in Patients Undergoing Bariatric Procedures
Obesity has escalated to pandemic levels, impacting over 650 million adults globally and significantly contributing to the burden of non-communicable diseases such as type 2 diabetes, cardiovascular disease, obstructive sleep…
- Trial name
- NCT07021170
- Testing
- Elan Believe, Elan Compass, Elan Supreme
- Where
- Egypt
- Volunteers
- 624 people, healthy volunteers welcome
- Sponsor
- General Committee of Teaching Hospitals and Institutes, Egypt
Vitamin D Deficiency, Obstructive Sleep Apnea
Vitamin D Status in Obstructive Sleep Apnea With and Without Comorbidities
This retrospective observational study evaluates the relationship between vitamin D status and obstructive sleep apnea (OSA) in adults.
- Trial name
- NCT07788391
- Where
- Turkey (Türkiye)
- Volunteers
- 269 people, healthy volunteers welcome
- Sponsor
- Hisar Intercontinental Hospital
Folate Deficiency, Vitamin B 12 Deficiency
Effectiveness of Fortification With Folic Acid and Vitamin B12 Among Teenage Girls
Folic acid and vitamin B12 play an interdependent role in key cellular processes, namely deoxyribonucleic acid synthesis, cell division, red blood cell formation, and nervous system myelination.
- Conditions
- Folate Deficiency, Vitamin B 12 Deficiency, Anemia, Megaloblastic, Cognitive Development
- Trial name
- NCT06100146
- Testing
- Folic acid and vitamin B12 fortified flour, Unfortified cereal flour
- Where
- 2 sites in Ethiopia
- Volunteers
- 472 people, healthy volunteers welcome
- Sponsor
- University Ghent
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
Spinal Muscular Atrophy, Fragile X Syndrome
Early Check: Expanded Screening in Newborns
Early Check provides voluntary screening of newborns for a selected panel of conditions. The study has three main objectives: 1) develop and implement an approach to identify affected infants, 2) address the impact on infants and…
- Conditions
- Spinal Muscular Atrophy, Fragile X Syndrome, Fragile X - Premutation, Duchenne Muscular Dystrophy
- Trial name
- NCT03655223
- Testing
- Confirmatory Testing
- Where
- United States
- Volunteers
- 30,000 people, healthy volunteers welcome
- Sponsor
- RTI International
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
Iron Deficiency, Iron Deficiency Anemia (IDA)
Collegiate Athlete Study
The purpose of this study is to determine what percentage of Black collegiate athletes have low energy availability. It will also determine the percentage of Black collegiate athletes who have iron deficiency, suboptimal or low…
- Conditions
- Iron Deficiency, Iron Deficiency Anemia (IDA), Vitamin D Deficiency, Vitamin D Insufficiency
- Trial name
- NCT07631312
- Testing
- Iron and Vitamin D Deficiencies Correction
- Where
- United States
- Volunteers
- 36 people, healthy volunteers welcome
- Sponsor
- Morehouse School of Medicine
Vitamin D Deficiency
Clinical Comparative Evaluation of the Use of Photodynamic Therapy in Conjunction With the Use of Vitamin D in Management Stage II Grade B Periodontitis Patients
Clinical Comparative Evaluation of the use of Photodynamic Therapy in conjunction with the use of Vitamin D in management Stage II Grade B Periodontitis Patients: A Randomized controlled clinical trial.
- Trial name
- NCT06700122
- Testing
- non-surgical periodontal therapy (SRP) and Photodynamic therapy (PDT) with systemic vitamin D
- Where
- Egypt
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- Cairo University
Vitamin D Deficiency
Clinical Assessment of Adjunctive Omega-3 Versus Vitamin D Daily Supplements on Active Periodontal Therapy With Stage II Grade B Periodontitis Patients
Clinical Assessment of Adjunctive Omega-3 Versus Vitamin D daily Supplements on Active Periodontal Therapy with Stage II Grade B Periodontitis Patients: A Randomized controlled clinical trial.
- Trial name
- NCT06654063
- Testing
- non-surgical periodontal therapy (SRP), non-surgical periodontal therapy (SRP)+ Omega-3, non-surgical periodontal therapy (SRP)+ Vitamin D
- Where
- Egypt
- Volunteers
- 72 people, healthy volunteers welcome
- Sponsor
- Cairo University
Vitamin D Deficiency
A Household-Based Dietary Intervention Study of Vitamin D Fortified Bread in Irish Families
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
- Fam-D-Bread (NCT07481240)
- Testing
- Fortified Bread, Unfortified bread
- Where
- 2 sites in Ireland
- Volunteers
- 128 people, healthy volunteers welcome
- Sponsor
- University College Cork
Vitamin D Deficiency, Breast Milk Collection
Vitamin D Sulfates in Breastmilk
Infants The purpose of this study is to measure breastmilk's vitamin D sulfate nutritional value in infant's saliva and digesta (gut).
- Trial name
- NCT06203041
- Testing
- Vitamin D
- Where
- United States
- Volunteers
- 101 people, healthy volunteers welcome
- Sponsor
- Mayo Clinic
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