The Relationship between Ultraviolet Radiation Exposure and Vitamin D Status

Nutrients

关键词: vitamin D;    ultraviolet;    UV;    sun;   

DOI  :  10.3390/nu2050482

来源: mdpi

【 摘 要 】

This paper reviews the main factors influencing the synthesis of vitamin D, with particular focus on ultraviolet radiation exposure. On the global level, the main source of vitamin D is the sun. The effect of solar radiation on vitamin D synthesis depends to some extent on the initial vitamin D levels. At moderate to high latitudes, diet becomes an increasingly important source of vitamin D due to decreased solar intensity and cold temperatures, which discourage skin exposure. During the mid-winter season, these factors result in decreased solar radiation exposure, hindering extensively the synthesis of vitamin D in these populations.

【 授权许可】

CC BY   
© 2010 by the authors; licensee MDPI, Basel, Switzerland