I'm not heartbroken or even unhappy about needing to supplement with vitamin A now - but I do want to emphasize that (1) I didn't take it before, because I didn't need it, and I used that as an example of why people need to do their labs, and that there's no need to hyper-supplement without a basis for doing so (e.g., by taking ADEKs when all I need is D and K, and even those I didn't need for the first 5 years); and (2) that I am adding it now BEFORE it goes too low, because I'm TRENDING towards low - which I could identify early because I track trends, not just raw numbers. Same with copper - I didn't need it before, and now I do - I'm content to take it now that I do.