Vitamin D Deficiency Clinical Trial
Official title:
Knowledge Innovation Project of CAS - Genetic and Nutritional Association Studies on Metabolism-related Diseases in Chinese Population -- Vitamin D Intervention Study：A Pilot Study
To determine the dose-response between the doses of vitamin D3 supplements and raised serum levels of 25(OH)D and also the dose of vitamin D3 required to achieve circulating 25(OH)D ≥ 75 nmol/L;
Recent epidemiological studies suggested that serum 25-hydroxyvitamin D [25(OH)D]
concentration ≥75 nmol/L appeared to be optimal for preventing cardiometabolic diseases and
improving bone health. To achieve this goal, a daily intake of 1000 IU or equivalent amount
from other sources, is needed, which is twice as much as the RDA recommended by Chinese
Nutrition Society. Meanwhile,epidemiological evidences show that large proportions of
Chinese may suffer vitamin D insufficiency or deficiency whereas the current RDA in China
might be too low to provide adequate vitamin D for people's health.
In order to fill up this gap, therefore, it is essential to determine the dose-response
between the doses of vitamin D3 supplements and raised serum levels of 25(OH)D and also the
dose of vitamin D3 required to achieve circulating 25(OH)D ≥ 75 nmol/L.Ultimately, the
current study will provide important evidence for establishing optimal vitamin D requirement
for Chinese people
;
Allocation: Randomized, Endpoint Classification: Bio-availability Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Investigator), Primary Purpose: Treatment
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