[derbOac]

To add additional dimensions to this, because the risk of lead per se is so salient, there's been a shift to using other metals such as cadmium as a substitute. Can't use lead because it's got so much baggage! Use cadmium instead!

There's a different set of issues involved with different substances — many problems associated with lead are due to its historical use — but lead is not the only heavy metal causing problems with health.

Not meaning to undermine what you're saying — on the contrary, I think it's more widespread than people realize.