What’s the story on Vitamin D

Source https://www.foodpolitics.com/2020/05/whats-the-story-on-vitamin-d/

Yesterday, I wrote about current research suggesting that higher levels of blood Vitamin D [actually, 25-hydroxycholecalciferol, or 25(OH)D] help to protect against Covid-19.

To understand concerns that this evidence may not be totally convincing, it’s useful to know the basics about this “vitamin,” which I put in quotes because its active form is a hormone that helps govern calcium balance.  Here’s how it works.

  • Sunlight acts on a form of cholesterol in skin (7-dehydrocholesterol) to covert it to cholecalciferol, the chemical name for vitamin D3.
  • Vitamin D3 goes to the liver where an enzyme converts it to 25 (OH)D.
  • 25(OH)D goes to the kidney where an enzyme converts it to 1,25-dihyd…

Source https://www.foodpolitics.com/2020/05/whats-the-story-on-vitamin-d/

Yesterday, I wrote about current research suggesting that higher levels of blood Vitamin D [actually, 25-hydroxycholecalciferol, or 25(OH)D] help to protect against Covid-19.

To understand concerns that this evidence may not be totally convincing, it’s useful to know the basics about this “vitamin,” which I put in quotes because its active form is a hormone that helps govern calcium balance.  Here’s how it works.

  • Sunlight acts on a form of cholesterol in skin (7-dehydrocholesterol) to covert it to cholecalciferol, the chemical name for vitamin D3.
  • Vitamin D3 goes to the liver where an enzyme converts it to 25 (OH)D.
  • 25(OH)D goes to the kidney where an enzyme converts it to 1,25-dihyd…

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