The supplement industry is strong indeed, but few supplements actually confer health benefits. Two of the few that in many cases do are Vitamin D and Vitamin B-12, which I cover below. Nutrients work in relation with each other in order to be utilized within the body. Often nutrients are required in the right proportion in order to provide the necessary ingredients for the well-functioning of the body. The good news is that eating a variety (wider is generally better) of whole foods virtually guarantees that we get enough of what we need. This is because our bodies can, in most cases, selectively absorb varying amounts of different nutrients from the foods we consume. And the spectrum of whole foods available (at least in moderately- and very-wealthy countries) is brimming with a full array of essential nutrients. In short, the best scenario is that we get a lot of nutrients and specifically that we get them from food, not supplements.
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