Clinical trials: Vitamin Deficiencies
Phosphorus and Calcium Disorders, Chronic Kidney Disease Mineral and Bone Disorder
Calcium and Phosphorus Whole-Body Balance and Kinetics in Patients With Moderate Chronic Kidney Disease
This pilot study aims to develop a method for simultaneous whole-body calcium and phosphorus balance and full kinetic modeling of both ions in patients with chronic kidney disease.
- Conditions
- Phosphorus and Calcium Disorders, Chronic Kidney Disease Mineral and Bone Disorder, Chronic Kidney Diseases
- Trial name
- NCT04019379
- Testing
- High Phosphorus Diet, Low Phosphorus Diet
- Where
- United States
- Volunteers
- 3 people
- Sponsor
- University of Minnesota
Nephrolithiasis, Urolithiasis
Vitamin D Repletion in Stone Formers With Hypercalciuria
Vitamin D plays a critical role in maintaining bone health, as well as preventing cardiovascular disease, cancer, and various autoimmune diseases, such as diabetes.
- Conditions
- Nephrolithiasis, Urolithiasis, Idiopathic Hypercalciuria, Vitamin D Deficiency
- Trial name
- NCT01295879
- Testing
- Ergocalciferol
- Where
- United States
- Volunteers
- 30 people
- Sponsor
- New York Presbyterian Hospital
Vitamin D Deficiency, Periodontitis
25-Hydroxyvitamin D Levels in Patients With Periodontitis (Stage III)
Periodontitis; is an inflammatory disease of tissues characterized by bone destruction around the teeth. Vitamin D plays an important role in several inflammatory diseases by promoting the expression of inflammatory cytokines…
- Trial name
- NCT05343273
- Testing
- taking a blood sample
- Where
- Turkey (Türkiye)
- Volunteers
- 83 people, healthy volunteers welcome
- Sponsor
- Ataturk University
Hidradenitis Suppurativa, Mediterranean Diet
Nutritional Status and Hidradenitis Suppurativa (Acne Inversa)
Hidradenitis suppurativa (HS) is a chronic inflammatory, debilitating skin disorder. The exacerbating factors of HS include nutrition and adiposity.
- Conditions
- Hidradenitis Suppurativa, Mediterranean Diet, Body Composition, Vitamin D Deficiency
- Trial name
- NutriHidra (NCT03683238)
- Testing
- Mediterranean Diet
- Volunteers
- 81 people, healthy volunteers welcome
- Sponsor
- Federico II University
Precursor Cell Lymphoblastic Leukemia-Lymphoma, Vitamin D Deficiency
Nutrition and Body Composition in Acute Lymphoblastic Leukemia
Many adolescents with acute lymphoblastic leukemia (ALL) have been found to have low bone density by the end of treatment. This can lead to long-term suffering in survivors due to poor bone health.
- Trial name
- NCT01317940
- Testing
- Vitamin D and Calcium Citrate
- Where
- United States
- Volunteers
- 76 people, healthy volunteers welcome
- Sponsor
- Children's Hospital Los Angeles
Congenital Adrenal Hyperplasia, Familial Hyperinsulinemic Hypoglycemia 1
Baby Detect : Genomic Newborn Screening
Newborn screening (NBS) is a global initiative of systematic testing at birth to identify babies with pre-defined severe but treatable conditions.
- Conditions
- Congenital Adrenal Hyperplasia, Familial Hyperinsulinemic Hypoglycemia 1, Phosphoglucomutase 1 Deficiency, Maturity Onset Diabetes of the Young
- Trial name
- BabyDetect (NCT05687474)
- Where
- Belgium
- Volunteers
- 6,824 people, healthy volunteers welcome
- Sponsor
- Centre Hospitalier Universitaire de Liege
Healthy Volunteers
Predictive Questionnaire for Vitamin D Insufficiency in Healthy Adults
The purpose of this clinical study is to evaluate the metrological properties of a questionnaire that aims to identify the vitamin D status in reference to a vitamin D blood dosage.
- Trial name
- NCT02408679
- Testing
- Blood sampling, Predictive questionnaire for vitamin D insufficiency
- Where
- France
- Volunteers
- 300 people, healthy volunteers welcome
- Sponsor
- Lesieur
Vitamin B 12 Deficiency, Pregnancy
Diet Quality of Pregnant Women With a Strict Plant-based Diet Versus an Omnivorous Diet
The goal of this observational study is to compare the nutritional intake among pregnant women with a strict plant-based diet versus an omnivorous diet. The main aim is to compare vitamin B12 intake.
- Conditions
- Vitamin B 12 Deficiency, Pregnancy, Nutrient Deficiency, Dietary Exposure
- Trial name
- NCT06046703
- Testing
- Daily nutritional intake
- Volunteers
- 256 people
- Sponsor
- Maastricht University Medical Center
Muscle Weakness, Vitamin D Deficiency
Vitamin D and Physical Performance Before and After Intervention and Birth Outcome in Pregnant Somali and Swedish Women
Somali migrant women, often in veiled clothing, living in a town in mid Sweden on the 60:th parallel were observed to be weak and to have a waddling gate.
- Trial name
- NCT02922803
- Testing
- 1 combination tablet of Vitamin D3/calcium per day, 2 combination tablets of Vitamin D3/calcium per day
- Where
- Sweden
- Volunteers
- 123 people, healthy volunteers welcome
- Sponsor
- Uppsala University
Vitamin D Deficiency, Type2 Diabetes
Effect of Vitamin D Supplementation on Inflammatory Markers
Previous studies have shown that improving vitamin D status among the elderly may lead to an improvement in some inflammatory markers, especially with patients with type 2 diabetes.
- Trial name
- NCT03782805
- Testing
- cholecalciferol (Euro-Pharm International, Canada)
- Where
- Lebanon
- Volunteers
- 88 people
- Sponsor
- Université d'Auvergne
Head and Neck Cancer, Intraoperative Complications
Coagulation and Vitamin K in Head and Neck Microvascular Free Flap Surgery
For patients with large head and neck tumors the recommended treatment, in many cases, is a combination of extensive surgery and postoperative radiotherapy.
- Conditions
- Head and Neck Cancer, Intraoperative Complications, Coagulation Disorder, Blood, Vitamin K Deficiency
- Trial name
- MVL-COAG (NCT04517461)
- Where
- Sweden
- Volunteers
- 40 people
- Sponsor
- Region Skane
Healthy Humans
Immune and Metabolic Effects of Vitamin D Supplementation in Healthy Humans
In this placebo controlled study the investigators aim to investigate the effect of a 3 month vitamin D supplementation on parameters of the immune, endocrine and metabolic system in healthy women and men. Vitamin D.
- Trial name
- NCT01248442
- Testing
- Cholecalciferol
- Where
- Austria
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Medical University of Graz
Hypertension, Vitamin D Deficiency
The Impact of Vitamin D Supplementation in Hypertensive Vitamin D Deficient Patients.
This study will assess the impact of Vitamin D supplementation on hypertensive patients with Vitamin D deficiency, it will also investigate the relationship between serum Vitamin D, irisin levels, blood pressure, and heart rate…
- Trial name
- NCT06645041
- Testing
- Vitamin D (Cholecalciferol )
- Where
- 3 sites in Iraq
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- University of Sulaimani
Alopecia Areata, Alopecia Totalis
The Epidemiology, Management and Comorbidities in Alopecia Areata in Czech Republic
The study series consists of three studies with the aim to assess the incidence, prevalence, risk factors, comorbidities and management of patients with alopecia areata in Czech Republic based on the patients and registry of a…
- Conditions
- Alopecia Areata, Alopecia Totalis, Alopecia Universalis, Alopecia Areata (& Ophiasis)
- Trial name
- NCT05098600
- Testing
- Exposure of interest
- Where
- Czechia
- Volunteers
- 123 people
- Sponsor
- Faculty Hospital Kralovske Vinohrady
Vitamin D Deficiency, Hematopoietic Stem Cell Transplantation (HSCT)
Vitamin D Replacement Using Oral Thin Film (OTF) Cholecalciferol in Patients Undergoing Hematopoietic Stem Cell Transplantation
The investigators hypothesize that vitamin D levels can be improved in hematopoietic stem cell transplantation (HSCT) recipients not responding or tolerating standard enteral supplementation options by using vitamin D oral thin…
- Trial name
- NCT04818957
- Testing
- Oral Thin Film (OTF) Cholecalciferol (Vitamin D3)
- Where
- United States
- Volunteers
- 24 people
- Sponsor
- Children's Hospital Medical Center, Cincinnati
Frail Elderly, Vitamin d Deficiency
Vitamin D in Vulnerable Adults (VIVA-VA)
Vitamin D insufficiency is a problem of growing concern, given its prevalence in older persons and the association of low vitamin D with multiple major health problems, including mobility and balance deterioration and falls…
- Trial name
- VIVA-VA (NCT01170273)
- Testing
- vitamin D
- Where
- United States
- Volunteers
- 130 people, healthy volunteers welcome
- Sponsor
- VA Office of Research and Development
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
Vitamin D Deficiency
Effect of Single High Dose of Cholecalciferol on Serum Metabolites of Vitamin D
The aim of this interventional study is to assess the effect of the single high dose of vitamin D on its serum metabolites in elderly. The main questions it attempts to answer is: 1.
- Trial name
- NCT05591170
- Testing
- Cholecalciferol 120 000 IU
- Where
- Poland
- Volunteers
- 58 people
- Sponsor
- Department of Endocrinology, Centre of Postgraduate Medical Education
Iron Deficiency
Effect of Vitamin C on Iron Absorption
Iron deficiency is a common health problem worldwide. Ferrous fumarate (a form of iron) is often added to foods in an effort to prevent iron deficiency.
- Trial name
- NCT00570895
- Testing
- Vitamin C
- Where
- United States
- Volunteers
- 22 people, healthy volunteers welcome
- Sponsor
- Baylor College of Medicine
Vitamin D Deficiency, Osseointegration Failure of Dental Implant
Vitamin-D Insufficiency and Implants
Vitamin D is important for bone health, immune function, and inflammation, along with dental implant success. The study aimed to assess bone markers and cytokine levels in patients with and without vitamin D insufficiency to…
- Conditions
- Vitamin D Deficiency, Osseointegration Failure of Dental Implant, Peri-Implantitis
- Trial name
- NCT06452251
- Testing
- OPG, OC, RANKL, IL-10, IL-1β, Ca, TNF-α and Caspase-1 ELISA, Resonance Frequency Analysis, Periodontal clinical examination
- Where
- Turkey (Türkiye)
- Volunteers
- 42 people, healthy volunteers welcome
- Sponsor
- Vesile Elif Toy
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