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The weird history of vitamin D — and what it actually has to do with sun
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The weird history of vitamin D — and what it actually has to do with sun

The Washington Post - By Leigh Cowart

As you soak in rays of almost-summer sunshine, your thoughts may turn to vitamin D — because you probably know it has something to do with the sun. But do you actually know what it is? Humans are kinda capable of photosynthesis, and they use it to produce what scientists believe to be the oldest …

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