McCall McPherson walks through a measurement-driven approach to supplements: test your levels of vitamin D, omega-3, and B12, supplement to correct deficiency, then retest. She separates measurable nutrients from harder-to-assess supplements that lack clear evidence of benefit.
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So one category is things that we can measure and we have at least some reasonable understanding of what is optimal or normal. So I would put things, vitamin D, omega 3B12s in that category. We can measure them. We have at least some confidence around where most people should be. So in my view that those are things that people should get measured and should supplement if they, if they're not in the optimal range or certainly if they're in the deficient range. Now, people will sometimes say, yeah, but the epidemiology doesn't definitively show that supplementing vitamin D has any benefits. There are lots of problems with those studies. We could talk about it. That's bunk. If you're deficient, get yourself out of the deficient range. Would it be better to go outside and get it from the sun? Sure, it would be, but some people can't do that. Many people, like where I live, even if I spent half the day outside, I wouldn't get enough sun to make enough vitamin D. So supplement if you're deficient. So measure, intervene, measure again. So that's pretty easy. Then. The category are things we can't measure. We don't have definitive data. Might work, might not work. We don't know what the risks are. That's almost everything else, unfortunately, right.
