Clinical trials: Vitamin Status Assessment
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
Maternal Vitamin D Status
Vitamin D Supplementation and Pregnancy Outcomes
Groups (group 1 receives 1000 IU vitamin D and group 2 receives 2000 IU vitamin D) through a random allocation. It is necessary to mention that all cases in each group could be able to receive the current supplementation during…
- Trial name
- NCT03308487
- Testing
- vitamin D3 (1000 IU), Vitamin D3 (2000 IU)
- Where
- Iran
- Volunteers
- 84 people, healthy volunteers welcome
- Sponsor
- Tirang R. Neyestani, Ph.D.
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
Nutrient Deficiency
Impact of Fortified Rice on Workers' Nutrition Status
The study is a single center, open label, nutrition intervention study. Healthy adult male working at a Singapore construction site are included if they fulfill inclusion and exclusion criteria.
- Trial name
- NCT04343508
- Testing
- Fortified rice
- Where
- Singapore
- Volunteers
- 133 people, healthy volunteers welcome
- Sponsor
- dsm-firmenich Switzerland AG
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
Obesity, Vitamin D Deficiency
Impact of Maternal Body Weight on Vitamin D Status During Pregnancy
Research shows high levels of vitamin D deficiency in pregnant women in Northern Ireland. Body composition is a determinant of vitamin D status.
- Trial name
- MO-VITD (NCT02713009)
- Testing
- Pregnancy multi-vitamin (including 10μg vitamin D3), 10μg vitamin D3
- Where
- United Kingdom
- Volunteers
- 240 people, healthy volunteers welcome
- Sponsor
- University of Ulster
Healthy
Effect of Regular Consumption of Micronutrient Fortified Beverage on the Micronutrient Status of Indian Schoolchildren
The purpose of this study is to assess the impact of regular consumption of micronutrient fortified drink in improving nutritional and micronutrient status in Indian school children.
- Trial name
- NCT01415557
- Testing
- Non-Fortified Control Product, Micronutrient Fortified Test Product
- Where
- India
- Volunteers
- 227 people, healthy volunteers welcome
- Sponsor
- Mondelēz International, Inc.
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
Vitamin D Deficiency
OASIS Study: Vitamin D Deficiency Prevention Among Older Adults in Ireland
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
- OASIS (NCT06705582)
- Testing
- Fortified Bread, Unfortified bread
- Where
- 2 sites in Ireland
- Volunteers
- 117 people, healthy volunteers welcome
- Sponsor
- University College Cork
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)
IVF, Body Weight
Nutritional Status of Women Undergoing in Vitro Fertilization
Infertility affects around 15 % of couples in their reproductive years. Even though the use of assisted reproductive technologies (ART) in aforementioned couples is increasing, their success rate is still relatively low.
- Conditions
- IVF, Body Weight, Nutrient Deficiency, Dietary Vitamin B12 Deficiency Anemia
- Trial name
- NCT05865015
- Where
- 2 sites in Slovenia
- Volunteers
- 69 people, healthy volunteers welcome
- Sponsor
- University Medical Centre Ljubljana
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
Evaluations, Diagnostic Self, Treatment Adherence
Impact of Vitamin D Supplementation on Cardiometabolic Status and Androgen Profile in Polycystic Ovary Syndrome
Polycystic ovary syndrome (PCOS) is a heterogeneous disorder of reproductive, endocrine and metabolic functions. Vitamin D has an influence on metabolic and reproductive functions.
- Trial name
- NCT04117750
- Testing
- cholecalciferol (vit D3)
- Where
- Egypt
- Volunteers
- 145 people, healthy volunteers welcome
- Sponsor
- Zagazig University
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
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
Iron Deficiency, Vitamin A Deficiency
Nutritional Status and Bouillon Use in Northern Ghana
This pilot aims to generate data that are critical for informing the design of a planned, more detailed study to evaluate the effect of multiple micronutrient (MN)-fortified bouillon cube on biomarkers of nutrient status of women…
- Conditions
- Iron Deficiency, Vitamin A Deficiency, Vitamin B 12 Deficiency, Folate Deficiency
- Trial name
- NCT04632771
- Testing
- N/A (observational study)
- Where
- Ghana
- Volunteers
- 995 people, healthy volunteers welcome
- Sponsor
- University of California, Davis
Nutrition Status, Bone Health
Evaluation of Calcium and Vitamin D Supplementation During Marine Corps Training
The primary objective of this randomized, double-blind, placebo-controlled trial is to determine the efficacy and effectiveness of Ca and vitamin D supplementation provided daily throughout Marine Corps recruit training on…
- Trial name
- MCRD-PI (NCT02636348)
- Testing
- Calcium/Vitamin D
- Where
- United States
- Volunteers
- 380 people, healthy volunteers welcome
- Sponsor
- United States Army Research Institute of Environmental Medicine
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
Healthy Infants
Influence of Inflammation on Micronutrient Status Assessment
Inflammation can influence several biochemical measurements those commonly used to interpret micronutrient status in children. Our primary objective is to investigate the effects of inflammation on several biochemical…
- Trial name
- NCT03801161
- Testing
- Pentavalent vaccine. It is a combination of five different antigens (Hepatitis B (HBV)/ Haemophilus influenzae type b (HiB) / Tetanus-Diphtheria-whole cell Pertussis (TDwP)).
- Where
- 2 sites in Bangladesh
- Volunteers
- 75 people, healthy volunteers welcome
- Sponsor
- International Centre for Diarrhoeal Disease Research, Bangladesh
Vitamin A Status
Estimation of Vitamin A Stores in Children and Women in Guatemala and Relation With Potential Toxicity Markers
The goal of this study is to assess whether 3-5 years-old children who have Vitamin A intakes above the tolerable upper intake level (UL=900 ug per day) have higher total body Vitamin A stores and biomarkers of excessive vitamin…
- Trial name
- GloVitAS-GU (NCT03345147)
- Testing
- High Vitamin A intake, Normal Vitamin A intake
- Where
- 3 sites in Guatemala
- Volunteers
- 178 people, healthy volunteers welcome
- Sponsor
- Institute of Nutrition of Central America and Panama