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A comment on Mushrooms and sunlight for making Vitamin D supplement. Parent comment

Re:Mushrooms and sunlight for making Vitamin D supplement by jszymborski on Thursday May 11, 2023 @10:47AM (#35902940)
It's dark out for most of the day in some climates. In others, it's dark out for much of the year.
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Re:Mushrooms and sunlight for making Vitamin D supplement by goda90 on Thursday May 11, 2023 @10:52AM (#35903037)
Not just the darkness, but the necessary UV wavelengths literally can't reach you in the middle of that day without a cloud in the sky for some parts of the year at higher latitudes.
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