Clinical trials: Vitamin Status Assessment
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
Parkinson's Disease
Vitamin B12 Status and Response to Vitamin B12 Supplementation in Patients With Parkinson's Disease
Based on Parkinson's disease (PD)/vitamin B12 deficiency symptom overlap and PD patients' propensity to avoid protein (the dietary source of vitamin B12), this study proposes to prospectively investigate the vitamin B12 status of…
- Trial name
- NCT00208611
- Testing
- Vitamin B12 Supplementation
- Where
- United States
- Volunteers
- 57 people
- Sponsor
- Emory University
Polycystic Ovary Syndrome, Insulin Resistance
Endocrine and Menstrual Disturbances in Women With Polycystic Ovary Syndrome (PCOS)
Polycystic ovary syndrome (PCOS) is a common endocrine disorder in reproductive age women, which causes disordered follicle growth and ovulation resulting in infertility.
- Conditions
- Polycystic Ovary Syndrome, Insulin Resistance, Vitamin D Deficiency, Obesity
- Trial name
- EMDPCOS (NCT03652987)
- Where
- United Kingdom
- Volunteers
- 300 people
- Sponsor
- St George's, University of London
Diabetes Mellitus, Type 1
GAD-Alum (Diamyd) Administered Into Lymph Nodes in Combination With Vitamin D in Type 1 Diabetes (DIAGNODE-1)
The objectives of the main study is to: Evaluate the safety of giving GAD-Alum (Glutamic acid decarboxylase) (Diamyd) directly into lymph glands in combination with an oral vitamin D regimen Evaluate how the above mentioned…
- Trial name
- DIAGNODE (NCT02352974)
- Testing
- GAD-Alum, Vitamin D
- Where
- Sweden
- Volunteers
- 12 people
- Sponsor
- Johnny Ludvigsson
Folate Deficiency, Iodine Deficiency
Acceptability and Nutritional Impact of Double-fortified Salt Containing Iodine and Folic Acid - Phase 1
The overarching objective of this two-phase project is to assess the effects of fortifying iodized salt with folic acid on improving women's folate status and thereby reduce the risk of neural tube defects (NTDs), which are…
- Conditions
- Folate Deficiency, Iodine Deficiency, Anemia, Macrocytic, Anemia Deficiency
- Trial name
- DFS-IoFA-1 (NCT05792241)
- Where
- Ethiopia
- Volunteers
- 100 people
- Sponsor
- University of California, Davis
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 A Deficiency
Using Stable Isotopes to Assess the Effectiveness of Vitamin A Supplementation in Cameroon
This is a study to evaluate the effects of vitamin A supplementation program on the vitamin A status of preschool children. All children aged 3-5 years who do not have severe illness and are not planning to move from the study…
- Trial name
- NCT03383744
- Testing
- vitamin A supplementation
- Volunteers
- 104 people
- Sponsor
- Centre for Food and Nutrition Research, Yaounde
Infertility
Impact of Vitamine D Status on in Vitro Fertilization Outcomes
Non skeletal effect of vitamin D have been the focus of much interest in the past decade. During the last years, special attention has been given to the impact of vitamin D on human reproduction.
- Trial name
- DFIV (NCT05048511)
- Testing
- vitamin D estimation
- Sponsor
- Nantes University Hospital
Neurotoxicity
Study to Assess Prevention of Oxaliplatin-induced Neurotoxicity Through Vitamin D Pathway
Many patients with cancer that are treated with a drug called oxaliplatin. This drug is used with other drugs to treat cancer. The drug can cause problems with the nerves in the hands and feet called peripheral neuropathy (a side…
- Trial name
- NCT01499940
- Testing
- Vitamin D3
- Where
- United States
- Volunteers
- 9 people
- Sponsor
- Gerald Higa, PharmD.
Vitamin A Deficiency
Using Stable Isotope Techniques to Monitor and Assess the Vitamin A Status of Children Susceptible to Infection
The combination of infectious diseases and malnutrition is the most prevalent, preventable public health problem in the world, responsible for millions of deaths annually, particularly in infants and children.
- Trial name
- NCT02363985
- Testing
- Mega-dose of vitamin A supplement
- Where
- Ethiopia
- Volunteers
- 138 people, healthy volunteers welcome
- Sponsor
- Ethiopian Public Health Institute
Infection, Vitamin A Overdose
Vitamin A Total Body Stores of Senegalese Children in Relation to Their Infectious Status
Despite economic growth in developing countries, Sub-Saharan Africa still faces food insecurity malnutrition and infections. Micronutrient deficiency and infectious diseases still remain a public health problem and have a…
- Trial name
- NCT03207308
- Testing
- Vitamin A supplementation
- Where
- Senegal
- Volunteers
- 55 people, healthy volunteers welcome
- Sponsor
- Cheikh Anta Diop University, Senegal
Healthy Infants, Infants With an Inflammatory Condition
Novel Isotope Dilution Technique to Assess Vitamin A Status
Background: There is no reliable method for vitamin A (VA) assessment for infants and young children. Serum VA concentration is not an authenticate indicator of VA status, while existing deuterium- VA isotope dilution methods to…
- Trial name
- NCT03000543
- Testing
- Vaccine
- Where
- 2 sites in Bangladesh
- Volunteers
- 250 people, healthy volunteers welcome
- Sponsor
- International Centre for Diarrhoeal Disease Research, Bangladesh
Burns, Bone Demineralization
Evaluation of Vitamin D Status in Children With Acute Burns
To see which vitamin D supplement (D2 vs D3) is most beneficial in burned children.
- Trial name
- VitaminD (NCT00536276)
- Testing
- Vitamin D2, Vitamin D3
- Where
- United States
- Volunteers
- 50 people
- Sponsor
- Shriners Hospitals for Children
Diet Habit
Women's Health Food Frequency Questionnaire
The aim of this study is to develop a tool that can measure the iron, folate, and vitamin B12 content of a diet through a literature review, database search, and a pilot study using a food consumption record.
- Trial name
- NCT05843942
- Testing
- Questionnaire
- Where
- 2 sites in Turkey (Türkiye)
- Volunteers
- 450 people
- Sponsor
- Hacettepe University
Vitamin D Status
Vitamin D Supplementation and Immunity/Physical Performance
The purpose of this study is to examine the effect of vitamin D supplementation on vitamin D status, immunity and physical performance.
- Trial name
- NCT03132103
- Testing
- Oral Vitamin D3, Solar simulated radiation (SSR)
- Where
- United Kingdom
- Volunteers
- 260 people, healthy volunteers welcome
- Sponsor
- Bangor University
Vitamin D, Physical Function
Vitamin D and Physical Function in Older Adults
Projections from NHANES III indicate that approximately 12,000,000 U.S. adults ≥ 60 years of age have vitamin D insufficiency (serum 25(OH)D < 50 nmol/L).
- Trial name
- NCT00710957
- Volunteers
- 1,100 people, healthy volunteers welcome
- Sponsor
- Wake Forest University Health Sciences
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)
Frailty, Physical Disability
Vitamin D and Calcium Supplementation at Danish Nursing Homes
Nursing home residents are in high risk of vitamin D deficiency, which negatively affects bone health. Vitamin D and calcium supplements have shown to increase bone density and reduce fracture risk and may affect daily physical…
- Conditions
- Frailty, Physical Disability, Aging, Muscle Weakness
- Trial name
- NCT04956705
- Testing
- Vitamin D and calcium
- Where
- 2 sites in Denmark
- Volunteers
- 109 people, healthy volunteers welcome
- Sponsor
- University College Copenhagen
Ileostomy - Stoma
Ileostomy Observation Study
Inflammatory bowel disease (IBD) which is associated with low bone mineral density is divided into 2 major disease entities: Crohn's disease and ulcerative colitis.
- Trial name
- NCT04143139
- Where
- United Kingdom
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- University of Ulster
Obesity, Nutritional Deficiencies
Assessment of Nutritional Status After Gastric Bypass Surgery
This study is aimed at assessing how Roux-en-Y gastric bypass (RYGP) impacts on energy and nutrients' intake, energy expenditure, and nutritional status in obese patients.
- Trial name
- NCT01891591
- Testing
- Roux-en-Y gastric bypass (RYGP)
- Where
- Switzerland
- Volunteers
- 16 people
- Sponsor
- University of Lausanne