In January 2020, I was sick-as-a-dog for three weeks with the “flu”. Did not know at the time I had the Kung Flu Death Star Flu. . . anyway, I asked my doctor to run and extensive blood test for my annual checkup. Oh, I figured I would get a “hit” for how I was mistreating my poor liver or such. Only thing she had to say was my vitamin D3 was low. So in February 2020 I added supplements of D3/K2. Sort of good timing and divine intervention if you ask me.
I used to blow off people who relied on supplements until I wised up years back and started just with the basics, hadn’t even a sniffle since although my allergies flair up from time to time.