Add the double whammy effect of tannins in tea, coffee, wine: "Tannic acid (TA) is an organic compound belonging to the tannin group. [...] It can also form co

Add the double whammy effect of tannins in tea, coffee, wine: "Tannic acid (TA) is an organic compound belonging to the tannin group. [...] It can also form complexes with mineral components, reducing their absorption. In some cases, this can be beneficial, such as in the case of toxic metals, but sometimes it may have a detrimental effect on the body when it involves essential mineral components like Ca, P, Mg, Na, K, or Fe." https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10609055/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10609055/ The effect of phytochemicals in our diets, the only form of defense plants have against being eaten, is severely under-researched, and completely ignored by most drive-by dietary advice. As I said elsewhere, cooking helps, but the dose makes the poison. You won't fare well with a diet of beans, spinach and a ton of coffee or tea, that's for sure.