Clinical trials: Vitamin D Fortification
Vitamin D Deficiency
The Effect of Vitamin D on Bone Accretion and Turn-Over in Young Girls
Objectives To evaluate the effect of increased vitamin D intake on vitamin D status, bone mass and bone turnover in young girls aged 12-13.
- Trial name
- NCT00267540
- Testing
- cholecalciferol (D3) (vitamin)
- Where
- Denmark
- Volunteers
- 225 people, healthy volunteers welcome
- Sponsor
- University of Copenhagen
25-hydroxyvitamin D Serum Concentrations
Trial of Vitamin D Fortified Milk
Prevalence of VDD is high worldwide, even in sunbathed equatorial regions where it had not been suspected before. The most cost-effective method for reducing population-wide VDD is through fortification of commonly consumed…
- Trial name
- NCT01909622
- Testing
- Vitamin D, No vitamin D
- Where
- 2 sites in Colombia
- Volunteers
- 80 people
- Sponsor
- University of Michigan
Vitamin D Deficiency
Effects of Vitamin D Fortification on Vitamin D Metabolite Profiles and Status in Vitamin D Insufficient Individuals
This is a cross-sectional study designed to compare plasma/serum and urine vitamin D metabolite profiles of vitamin D sufficient and insufficient individuals. There are two phases of this study.
- Trial name
- VITD-2013 (NCT02422784)
- Testing
- Rooibos Iced-Tea (Control), Rooibos Tea - Vitamin D3, Rooibos Tea- Vitamin D3 & Calcium
- Where
- Canada
- Volunteers
- healthy volunteers welcome
- Sponsor
- University of Manitoba
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
Periodontitis, Inflammation
Calcium-vitamin D & Periodontal Therapy for Improving Metabolic and Inflammatory Profile Among Pregnant Women
The improvement of maternal and child health remains a key issue in global health. Production and improved accessibility of healthy and nutrient-rich milk-based products could potentially tackle health and nutrition inequalities…
- Trial name
- IMPROVE (NCT03148483)
- Testing
- Early PT, Delayed PT, Fortified Milk
- Where
- Brazil
- Volunteers
- 70 people, healthy volunteers welcome
- Sponsor
- University of Westminster
Change in Serum 25 Hydroxyvitamin D Levels
Mozzarella Cheese Vitamin D and Bioavailability
The purpose of this study is to evaluate the effect of heat on the bioavailability of vitamin D in industrially fortified mozzarella cheese baked with pizza.
- Trial name
- NCT01919905
- Testing
- Vitamin D
- Where
- Canada
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- University of Toronto
Vitamin D Status, Healthy
Comparison of the Efficacy of Calcium-cholecalciferol Foodstuffs and Calcium-cholecalciferol Supplement
This study is conducted in two phases. At the first phase, the prevalence of vitamin D insufficiency in primary school-children in Tehran is determined during the cold seasons of 2008.
- Trial name
- NCT00864539
- Testing
- fortified milk, plain milk, fortified orange juice
- Volunteers
- 585 people, healthy volunteers welcome
- Sponsor
- National Nutrition and Food Technology Institute
Type 2 Diabetes
Comparison of Efficacy of Vitamin D and Vitamin D-calcium Fortified Yogurt Drink in Diabetic Patients
The aim of this study is to evaluate the possible effects of daily intake of yogurt drink fortified with vitamin D alone or with vitamin D + calcium on some selected glycemic, metabolic, inflammatory and oxidative stress markers…
- Trial name
- NCT01229891
- Testing
- plain yogurt drink, vitamin D fortified yogurt drink, vitamin D-calcium yogurt drink
- Volunteers
- 90 people
- Sponsor
- National Nutrition and Food Technology Institute
Vitamin D Deficiency, Low Bone Density
Nursing-Home Residents Given Bread Fortified With Vitamin D3
Background. For older adults, serum 25-hydroxyvitamin D (25(OH)D) higher than 75 nmol/L lowers fracture risk and attainment of this 25(OH)D target may require 125 mcg (5000 IU)/d of vitamin D3.
- Trial name
- NCT00789503
- Testing
- Bread fortified with vitamin D3 and calcium
- Volunteers
- 45 people, healthy volunteers welcome
- Sponsor
- University of Toronto
Healthy
The Effect of Vitamin D Fortification of Bread and Milk in Danish Families
Approximately 200 families corresponding to 800 persons are included in the study. The study investigate the efficacy of vitamin D fortification of bread and milk on vitamin D status in serum.
- Trial name
- VitMaD (NCT01184716)
- Testing
- Vitamin D fortification
- Where
- Denmark
- Volunteers
- 782 people, healthy volunteers welcome
- Sponsor
- Technical University of Denmark
Vitamin D Deficiency
The Influence of Food Matrix Delivery System on the Bioavailability of Vitamin D3
This study investigates the influence of different food matrices on the bioavailability of vitamin D. Although most vitamin D comes from skin synthesis in response to sun exposure, dietary intake is also important - especially…
- Trial name
- DFORT (NCT03783273)
- Testing
- Vitamin D3, Whey protein-complex, Water
- Where
- Denmark
- Volunteers
- 30 people
- Sponsor
- University of Aarhus
Hypovitaminosis D, Cardiovascular Diseases
Effect of vitaminD3 or 25(OH)D3 Fortified Dairy on Vitmain D Status and CVD Risk Markers
This study aims to compare the acute effect of consuming milk and butter fortified with either vitamin D3 or 25 (OH) D3 on serum/plasma vitamin D status in humans.
- Trial name
- NCT02535910
- Testing
- vitamin D3, 25(OH) D3, Control
- Where
- United Kingdom
- Volunteers
- 18 people, healthy volunteers welcome
- Sponsor
- University of Reading
Healthy Individuals
Study of Vitamin D Fortification of Milk and Oil
It is a two-year longitudinal effectiveness study. A comparative study with a case-control design. Study will be conducted in Pune city. A total of up to 100 families (50 families per group) will be recruited.
- Trial name
- Tata (NCT05541094)
- Where
- India
- Volunteers
- 448 people, healthy volunteers welcome
- Sponsor
- Dr. Anuradha Khadilkar
Vitamin D Deficiency
Food-based Solutions for Optimal Vitamin D Nutrition and Health
This project aims at proving the efficacy and safety of food based solutions to prevent vitamin D deficiency in high risk populations of Caucasian and South Asian origin living in Denmark.
- Trial name
- ODIN_FOOD (NCT02631629)
- Testing
- Non-fortified foods, Fortified foods
- Where
- Denmark
- Volunteers
- 143 people, healthy volunteers welcome
- Sponsor
- Technical University of Denmark
Type 2 Diabetes Mellitus
Vitamin D Receptor Polymorphisms and Efficacy of Vitamin D-Fortified Yogurt Drink in Patients With Type 2 Diabetes
Study is a 12-week Double blind,controlled experiments designed to examine the possible effects of vitamin D receptor gene polymorphisms on the metabolic, inflammatory and oxidative stress markers in type 2 diabetic patients to…
- Trial name
- NCT01236846
- Testing
- Fortified Yogurt Drink, Plain Yogurt Drink
- Where
- 4 sites in Iran
- Volunteers
- 180 people, healthy volunteers welcome
- Sponsor
- Tirang R. Neyestani