[frogjerk]

I have been taking Vitamin D3 for years now on my doctor's advice. There is no doubt it has helped me get over COVID (tested positive once) - most likely had it 3 times with no real issues.

It also ended daughter’s manic depression.

D3 really helps your mood and outlook, no doubt.

[arthurus]

Twenty years ago doctors only recommended vitamin D for osteoporosis and other bone issues. And it was D2 which is wholly synthetic and only replicates a small portion of the D made by the body from sunshine. D3 is pant derived and much more nearly complete though natural sunshine is superior with the caveat that sunshine is less effective progressively north of the tropics due to sun angle and cold weather induced covering up of skin.