vitamin d deficiency
Conditions
Interventions
Intervention group:400IU vitamin/d for 12 months
Control:Nil
Sponsors
National Institute of Nutrition and Food Safety, Chinese Center for Disease Control and Prevention
Eligibility
Sex/Gender
All
Age
8 Years to 60 Years
Inclusion criteria
Inclusion criteria: 1. Pupils aged 9-11 years students in the local primary school; 2. Middle-school students aged 12-14 years students in the local middle school; 3. White-collar workers aged 18-60 years adult who had little sunshine exposure.
Exclusion criteria
Exclusion criteria: 1. Participating in other clinical studies within previous 3 months; 2. Taking vitamin D supplements within previous 3 months; 3. Using medications that may affect vitamin D metabolism in previous 3 months; 4. Women during pregnancy or lactation; 5. Concomitant with clinical conditions, like liver dysfunction, which may affect vitamin D metabolism.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| 25-hydroxyvitamin; | — |
Countries
China
Contacts
Public ContactYang Xiaoguang
National Institute of Nutrition and Food Safety, Chinese Center for Disease Control and Prevention
Outcome results
None listed