 Is a tan a "sign" of health?
This “must read” article shows that facultative pigmentation, i.e., a “tan” is a “sign of health” rather than a “sign of skin damage” (as the dermatologists love to say). The "bottom line" is that a “tan” is a “visible surrogate” for having a sufficient vitamin D level. No tan = vitamin D insufficiency/deficiency. A tan = vitamin D sufficiency.
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Skeletons show rickets struck the Medici family
Indoor life and poor nutrition condemned the children of Florence's rulers to bone disease.
“Poor children … were living in small houses, and they were running around outside,” she says, but elite parents “wouldn’t have wanted their children to have tans, because that would suggest they had to go outside”.
http://www.nature.com/news/skeletons-show-rickets-struck-the-medici-family-1.13156 |