150
Participants
Start Date
June 1, 2015
Primary Completion Date
November 25, 2015
Study Completion Date
November 30, 2015
Sunlight Exposure
"* Everyday sunlight exposure around noon for 20-30 minutes for 8 weeks~* Completing a Sun Diary after sunlight exposure"
Vitamin D Supplementation
\- Supplementation of vitamin D3 500 IU/day for 8 weeks
Placebo
\- Intake of placebo for 8 weeks
Seoul National University Hospital
OTHER