Steenbock Discovers That Sunlight Increases Vitamin D in Food

Article abstract: With the discovery that the ultraviolet component of sunlight increased vitamin D in food, Steenbock stimulated extensive research on vitamins.

Summary of Event

The discovery of the effect of sunlight on food, which results in increased amounts of vitamin D, arose from two separate areas of research involving biochemistry and medicine. The first part of the investigation involved sterol and specifically cholesterol. In 1901, the importance of this substance was not yet known, and a number of able chemists had attempted to unravel the...

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