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  • Title: The relationship between ultraviolet radiation exposure and vitamin D status.
    Author: Engelsen O.
    Journal: Nutrients; 2010 May; 2(5):482-95. PubMed ID: 22254036.
    Abstract:
    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.
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