But in any complex system there can be various factors that lead to things being out of balance. I know someone who can't take multivitamins because there's too

But in any complex system there can be various factors that lead to things being out of balance. I know someone who can't take multivitamins because there's too much iron in them and it upsets her system. If she were getting too much iron somewhere else, though, and cut that back, then they would be fine. The point I guess is that perhaps these things aren't bad for you, but rather they're bad for you in the current context of your environment, health, and current dietary intake. On the other hand, maybe they're just a bunch of things that are awful for your specific metabolism. Given the issues you posted, I probably wouldn't want to try it out if I were you.