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Vitamin D in winter in the northen hemisphere

Discussion in 'Ask Jack' started by Arborescence, Apr 22, 2015.

  1. I've read in some books and on the web that during winter we don't get enough vitamin D for the body but that supplements may cause calcification. I've read on a blog post that Jack says that it is because of the time of the day that you take the vitamin D?
  2. Jack Kruse

    Jack Kruse Administrator

    Read the mammalian battery blog post.

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