Vitamin D concentrations in Asian children aged 2 years living in England: population survey

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M Lawson1, M Thomas

  • 1Childhood Nutrition Research Centre, Institute of Child Health, London WC1N 1EH. m.lawson@ich.ucl.ac.uk

BMJ (Clinical Research Ed.)
|January 5, 1999
PubMed
Abstract

No abstract available in PubMed .

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Role of Skin in Vitamin D Synthesis

The skin plays a crucial role in the synthesis of vitamin D, a vital nutrient for various physiological processes in the body. Vitamin D is unique because it can be synthesized in the skin through a series of chemical reactions triggered by exposure to ultraviolet B (UVB) radiation from sunlight.
The solar UV B rays (290-315 nm) are absorbed by the skin, and 7-dehydrocholesterol (provitamin D3) photolyzes it to previtamin D3, which undergoes a rapid transformation to vitamin D3(cholecalciferol).