Vitamin D supplementation during Antarctic winter.

Abstract

BACKGROUND Persons with limited exposure to ultraviolet B light, including space travelers, may not receive enough vitamin D. Recent studies indicate that optimal serum 25-hydroxyvitamin D [25(OH)D] should be > or = 80 nmol/L. OBJECTIVE This study was designed to evaluate the effectiveness of 3 doses of vitamin D to raise and maintain 25(OH)D to a… (More)
DOI: 10.3945/ajcn.2008.27189

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