Right. I'm concerned about all those things we haven't even discovered, as well. I think too many man-made supplements (isolated chemicals) can throw us out of balance.
I'm sure a lot of us really do want to stay as natural as possible.
Interesting on clay. Some years ago, I started getting shocks in stores, home, whatever. I finally discovered that if I ate a little clay, I wouldn't get them. Someone could probably explain that. Electrical? Magnetic?
I do think Dr. Jarvis' recommendation of taking the Lugol's two days per week is interesting, as the body would have a chance to handle it easier. And, taking the seaweeds would add balance to it. Jarvis used both.