Nutrients 2012, 4(1), 42-51; doi:10.3390/nu4010042
Review

Theobald Palm and His Remarkable Observation: How the Sunshine Vitamin Came to Be Recognized

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Received: 3 November 2011; in revised form: 4 January 2012 / Accepted: 11 January 2012 / Published: 17 January 2012
(This article belongs to the Special Issue Vitamin D)
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Abstract: The seminal discovery that sunlight was important in the prevention of nutritional rickets was made in 1890 by Theobald A. Palm, a medical missionary who contrasted the prevalence of rickets in northern European urban areas with similar areas in Japan and other tropical countries. He surmised that exposure to sunlight prevented rickets. Over the next 40 years his observation led to an understanding of ultraviolet irradiation and its role in vitamin D synthesis. This opened a new era of appreciation for the curative powers of the sun and “the sunshine vitamin”. While Palm’s observations were in some ways obscure, they had a potent effect on the development of photobiology.
Keywords: vitamin D; nutritional rickets; photobiology; sunlight; UVB wavelength rays
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Chesney, R.W. Theobald Palm and His Remarkable Observation: How the Sunshine Vitamin Came to Be Recognized. Nutrients 2012, 4, 42-51.

AMA Style

Chesney RW. Theobald Palm and His Remarkable Observation: How the Sunshine Vitamin Came to Be Recognized. Nutrients. 2012; 4(1):42-51.

Chicago/Turabian Style

Chesney, Russell W. 2012. "Theobald Palm and His Remarkable Observation: How the Sunshine Vitamin Came to Be Recognized." Nutrients 4, no. 1: 42-51.


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