The purpose of this study is to determine if 14-19 year old African American adolescents are able to take a daily vitamin D supplement daily for about 4 months and how well a daily dose of 400 IU or 2000 IU vitamin D supplement raises their vitamin D blood level.
To determine the feasibility of African American teenagers taking a daily vitamin D supplement over a 4 month period in terms of compliance and practical implementation. To determine the differences in response in blood 25-OH D level between those randomly assigned to taking a 400 IU supplement versus 2000 IU per day and to determine if there are differences in blood 25-OH D level response depending on subject gender and overweight/obese versus healthy-weight status.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
BASIC_SCIENCE
Masking
SINGLE
Enrollment
45
2000 IU vitamin D3 supplement to be taken once daily over 4 months
400 IU Vitamin D3 supplement to be taken daily over 4 months
Georgia Prevention Institute at Medical College of Georgia
Augusta, Georgia, United States
Plasma 25-OH D level
Time frame: 3-4 months from baseline to post-testing
Blood pressure
Time frame: 3-4 months from baseline to post-testing
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