> We can manufacture it in the body. "Essential nutrients" are things we cannot manufacture. Entirely anecdotal, but there are definitely people out there who

> We can manufacture it in the body. "Essential nutrients" are things we cannot manufacture. Entirely anecdotal, but there are definitely people out there who have to take supplements to achieve normal levels. My most recent blood tests showed that I had a vitamin D deficiency, so my PCP prescribed vitamin D. At the time, I was getting outside plenty and was exposed to the sun more than most people with desk jobs, but it wasn't enough. I wouldn't be surprised if being stuck inside due to the pandemic has made it worse. Did the prescription change anything? Dunno. I haven't died yet, and it costs nothing since it's prescribed by my PCP, so I'm not complaining, but otherwise I feel exactly the same. Would I go around taking random supplements without the oversight of my doctor? Nope.