So why do we need vitamin D in the first place? And can we get it from our foods?
First, let’s tackle the second question. No, you cannot get enough of it from your food unless you are eating a lot of sardines. No, not even if you are drinking “vitamin D fortified” milk. I am a big fan of obtaining your nutrients from your food when possible. In this case, it’s just not.
Second, what does vitamin D do? Tons of stuff! Although we call it a “vitamin” it is actually a hormone. And as such, it is a powerful chemical messenger to your organs and tissues.
The Vitamin D Society states that too little of this valuable hormone can result in “significantly higher rates of many forms of cancer‚ as well as heart disease‚ osteoporosis‚ multiple sclerosis and many other conditions and diseases.” In addition to all of those reasons to take vitamin D, research has shown that those people with a vitamin D deficiency have increased risks of respiratory illnesses including influenza. And new research indicates that the lower ones vitamin D levels are, the higher the risk of contracting Covid as well as getting very ill with it. (1, 2, 3)
Back when I was working in the Emergency Department, I would always refuse the flu shot. Each year I would point out the studies that indicated vitamin D, beta glucans, and probiotics appear to work just as well (if not better) than the hit-and-miss vaccine. Of course, I am NOT saying this is the best course for you. I am telling you what I did.