Actively Recruiting
Estimation of the Dietary Requirement for Vitamin D in Ethnic Groups
Led by University of Surrey · Updated on 2024-05-10
114
Participants Needed
1
Research Sites
95 weeks
Total Duration
On this page
Sponsors
U
University of Surrey
Lead Sponsor
U
University of Reading
Collaborating Sponsor
AI-Summary
What this Trial Is About
The aim of this study is to perform a double-blind, randomised, dose-response trial of vitamin D3 supplementation in United Kingdom (UK)-dwelling adults of white European, South Asian, and black African/Caribbean ethnicity to investigate the distribution of dietary intakes needed to maintain adequate vitamin D status in winter, as indicated by serum 25(OH)D concentrations at ranges of \>25 to 50 nmol/L. In addition, this study will investigate the effect of vitamin D3 supplementation on immune health, muscular strength, and overall health.
CONDITIONS
Official Title
Estimation of the Dietary Requirement for Vitamin D in Ethnic Groups
Who Can Participate
Eligibility Criteria
You may qualify if you...
- British white European, black African/Caribbean, or South Asian (self-reported)
- Living in England for >2 months
- Aged >18 years
- No significant health issues
- English or Urdu speaker
You will not qualify if you...
- Medical condition or history affecting study measurements (e.g., ischaemic heart disease, type 1 and type 2 diabetes, thyroid disease, osteoporosis, haematological disease, malignancy)
- Use of medications affecting vitamin D metabolism (hormone replacement therapy, anti-oestrogens, antiepileptic drugs, breast cancer treatment)
- Pregnant or planning pregnancy during the study
- Regular use of sun beds
- Sun holiday one month before or during the study period
- Participation in another clinical trial simultaneously
- Previous intolerance or allergy to vitamin D
AI-Screening
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Trial Site Locations
Total: 1 location
1
Faculty of Health and Medical Sciences
Guildford, United Kingdom, GU2 7XH
Actively Recruiting
Research Team
A
Abigail Bournot, PhD
CONTACT
S
Susan Lanham-New
CONTACT
How is the study designed?
Study Type
INTERVENTIONAL
Masking
DOUBLE
Allocation
RANDOMIZED
Model
PARALLEL
Primary Purpose
PREVENTION
Number of Arms
3
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