This is just a short Post to make you aware of a recent study on the effect and value of Vitamin D. The Youtube video below is by Dr John Campbell who generally provides clear, accurate and practical information on medical matters.
Here is the scientific paper, published in Nutrients, being reviewed:
source: https://www.mdpi.com/2072-6643/13/10/3596
It is certainly worth considering taking a Vitamin D supplement. Particularly in winter as its natural production in the body is fueled by exposure to sunlight, often in short supply.
See also my other Post on Vitamin D
https://contrarian.cloud/vitamin-d3-for-you-and-me/(opens in a new tab)