The effect of darkness on vitamin D in adults.

Circulating 25-hydroxy vitamin D measurements were made on Caucasians in the Antarctic. Following a period of 3 months' complete darkness there was a significant fall in 25-hydroxy vitamin D values. These results emphasize the importance of u.v. light on skin synthesis of cholecalciferol and su...

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Bibliographic Details
Published in:Postgraduate Medical Journal
Main Authors: Fairney, A., Fry, J., Lipscomb, A.
Format: Text
Language:English
Published: BMJ Publishing Group Ltd 1979
Subjects:
Online Access:http://pmj.bmj.com/cgi/content/short/55/642/248
https://doi.org/10.1136/pgmj.55.642.248
Description
Summary:Circulating 25-hydroxy vitamin D measurements were made on Caucasians in the Antarctic. Following a period of 3 months' complete darkness there was a significant fall in 25-hydroxy vitamin D values. These results emphasize the importance of u.v. light on skin synthesis of cholecalciferol and support the view that the geriatric and immigrant population should be adequately exposed to sunlight to prevent vitamin D deficiency.