Clinical trials: Vitamin D Status, open to volunteers
Metabolic Dysfunction-Associated Steatotic Liver Disease (MASLD)
Periodontal Status and Biomarkers in MASLD
This study is designed as a prospective, observational research project conducted in collaboration between the Department of Periodontology at the Faculty of Dentistry and the Division of Gastroenterology at the Faculty of…
- Trial name
- NCT07923409
- Testing
- measurement of periodontal parameters, collection of GCF and serum samples
- Volunteers
- 66 people, healthy volunteers welcome
- Sponsor
- Recep Tayyip Erdogan University
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
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
Locally Advanced Cervical Cancer, Vitamin D Concentration
Vitamin D Status and Clinical Outcomes in Locally Advanced Cervical Cancer
Background. Definitive chemoradiotherapy represents the standard therapeutic approach for the management of locally advanced cervical cancer.
- Trial name
- CERVITAL (NCT07743918)
- Testing
- Pretreatment Vitamin D Assessment in Serum and Cervical Lavage Fluid
- Where
- Serbia
- Volunteers
- 100 people
- Sponsor
- University of Kragujevac
Obesity, Bariatric Surgery
Effectiveness of a Modified Cost-Effective Dietary Plan in Promoting Weight Loss and Preservation of Lean Body Mass in Patients After Bariatric Surgery
This study will see if a low-cost dietary plan, based on the standard dietary guidelines of the American Society for Metabolic and Bariatric Surgery (ASMBS) and using locally available foods, can help patients lose weight and…
- Conditions
- Obesity, Bariatric Surgery, Nutritional Status, Body Composition
- Trial name
- NCT07111767
- Testing
- Low-Cost Post-Bariatric Diet, Standard High-cost Post-Bariatric Diet
- Where
- Pakistan
- Volunteers
- 122 people
- Sponsor
- Khyber Teaching Hospital
Healthy Adult Participants, Vitamin D Insufficiency
Supplementation of Cholecalciferol and Related Active Metabolites Through Bioenhancing Layer's Eggs
The purpose of this research is to evaluate if 1) consumption of vitamin D3- or 25(OH)D3-biofortified eggs will increase vitamin D and 25(OH)D status in young adults who consume these bioenhanced eggs, 2) to determine if the gut…
- Trial name
- SCRAMBLE (NCT07859280)
- Testing
- Vitamin D3 bioenhanced eggs, 25(OH)D3 bioenhanced eggs
- Where
- United States
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Cornell University
Primary Osteoporosis
Vitamin D Status and Multi-Omics Profiles in Primary Osteoporosis
This observational study aims to explore the relationships between vitamin D status and genomic, proteomic, and metabolomic profiles in patients with primary osteoporosis.
- Trial name
- OP-MultiOmics (NCT07296471)
- Where
- China
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- Dr. Li Chen
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.
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
Hepatocellular Carcinoma, Liver Function
Effects of Vitamin D Status and Multiple Mega-dose Supplementation on Health Care Disparities in Perioperative Patients With Hepatocellular Carcinoma Receiving Hepatectomy
High concentrations of parathyroid hormone (PTH) are common in patients with hepatocellular carcinoma (HCC). This study is aimed to investigate effects of vitamin D status and its multiple mega-dosage supplementation on PTH and…
- Conditions
- Hepatocellular Carcinoma, Liver Function, Postoperative Complications
- Trial name
- NCT05887505
- Testing
- Vitamin D
- Volunteers
- 120 people
- Sponsor
- Taoyuan General Hospital
Vitamin D 25-Hydroxylase Deficiency, Undernutrition
Impact of Trout Fish, Cow Milk With Egg, Vitamin D Supplementation, and Dietary Education on Vitamin D Status, Undernutrition, and Neurocognitive Outcomes Among School Children in Pakistan: An Open-label Individually Randomized Controlled Trial
Vitamin D deficiency and undernutrition are major public health concerns globally, particularly among children in low-resource and high-altitude settings.
- Conditions
- Vitamin D 25-Hydroxylase Deficiency, Undernutrition, Neurocognitive Development
- Trial name
- NCT07864662
- Testing
- Vitamin D supplement 4000 IU weekly, 200 grams of cooked trout fish, 250 milliliters of whole cow milk + whole egg
- Where
- Pakistan
- Volunteers
- 304 people
- Sponsor
- Aga Khan University
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
Vitamin D Concentration
Vitamin D Satus in Adults With Newly Diagnosed ITP
Investigator study aims to assess the level of vitamin D in adult patients with newly diagnosed ITP and correlation between its level and treatment respose
- Trial name
- NCT07146555
- Testing
- No Interventions
- Volunteers
- 84 people, healthy volunteers welcome
- Sponsor
- Assiut University
Vitamin D Deficiency
Vitamin D and Health Status of British African-Caribbean Women
Vitamin D deficiency remains a global public health issue (Wilson 2017). In the United Kingdom (UK). There is a lack of research looking at vitamin D status of the British African-Caribbean population.
- Trial name
- NCT04179370
- Testing
- N/A - no intervention. Observational study.
- Where
- United Kingdom
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- University of Surrey
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
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)
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
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