This essay is informative and well-written, in my opinion, but perhaps makes too strong a claim in the title. For the paper certainly does not contain "everything you need to know" about the subject -- a subject which is, in a policy context, multi-stranded and wide-ranging.
Here is another timely article which may be of interest.
https://brownstone.org/articles/vitamin-d-everything-you-need-to-know/
This essay is informative and well-written, in my opinion, but perhaps makes too strong a claim in the title. For the paper certainly does not contain "everything you need to know" about the subject -- a subject which is, in a policy context, multi-stranded and wide-ranging.