Vitamin D supplementation to prevent acute respiratory tract infections (2017)

Re:Vitamin D supplementation to prevent acute respiratory tr... by alexpotato on Monday March 02, 2020 @10:55AM (#22465408)

I don't have the source handy but there was a geographic point made about Scandinavia that went something like this:

- Scandinavia is very far north and therefore gets less sun in the winter (obviously)

- Apparently the soil of Scandinavia is well suited to crops that are high in Vitamin D

The soil being good for Vitamin D crops (plus lightening of skin/hair and fish diets etc) was a part of why people were able to live in such far northern climates even if they didn't always have access to fish.

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Re:Vitamin D supplementation to prevent acute respiratory tr... by bdcs on Monday March 02, 2020 @01:35PM (#22467286)

> - Apparently the soil of Scandinavia is well suited to crops that are high in Vitamin D

IIUC it's the other way around. soil/climate allows for foods low in Vitamin D -> Vitamin D needed from other sources -> evolutionary pressure for getting it from the sun -> less melanin in skin

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Re:Vitamin D supplementation to prevent acute respiratory tr... by BurningFrog on Monday March 02, 2020 @02:04PM (#22467626)

I can't find any crops that are high in vitamin D.

Some fungi have decent vitamin D, but it's certainly not a major "crop" in Scandinavia.

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