I’m all for the vitamin D. While I am certainly no expert in it, nor am I going to claim to be, I do notice the winters when I get sicker are the years I don’t take my vitamin D supplement. Yes, my blood work shows I am low as I don’t drink milk, and most any time I’m outside I wear pants, at least a TShirt and hat, not exposing near enough skin to the sun. Since this started I got back on my Vitamin D supplement and have been spending more time in the sun. I mean it seems to keep me healthy at other times, why not now?