The consensus in this thread about supplements, i.e., that they're not necessary except in special circumstances as long as one's diet is good, matches with my take as well. I'd consider Dr. fraylock's post above to be "case closed" on the question.
So, not to hijack the thread, but how about a follow-on question?
What's a good way to get one's SO to believe the above, and cut down/cut out their supplement intake?
My SO has a literal cabinet full (the small cabinet above the sink, but still a cabinet) of various types of supplements, and takes a handful (again literally) at breakfast, lunch, and dinner.
My approach to date has been to leave it alone, but from a MMM perspective, it would be better to eliminate this unnecessary expense, right? Our diet, thanks to SO's cooking, is great, with lots of attention to macro- and micro-nutrient content.
And it also seems like a waste of time and energy keeping all these different things in stock, buying them from different stores, parceling out each day's doses, etc.
My SO is naturally reasonably frugal and has expressed some receptiveness to MMM ideas (a recent example is looking at the cable bill and suggesting some alternatives, including cord-cutting and moving to an internet-only plan). But I think the supplements thing is at least partly due to teachings from her mom when she grew up, which makes me worried that if I venture into this territory I could find myself in too deep, you know?
Anyway, any ideas?