Interesting article, Denis — thanks for this info, which helps to explain my fatigue after a recent injury.

Question: You mention that magnesium is an agonist for vitamin D, which of course is an agonist for calcium. But I'd read that magnesium is an antagonist for calcium — i.e., it inhibits absorption. Can you help parse that out? And, if you're looking for topics for future posts, I for one would appreciate an explanation of all the ways vitamins and micronutrients work with and against each other. Thanks!

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