[redprince]

"The bottom line is that arsenic is a heavy metal, like lead, and all heavy metals are dangerous and carcinogenic."

Gold, iron, tin are are all "heavy metals" and are certainly not carcinogenic or dangerous.

[gus_massa]

I remember from a video of Cody's Lab that metallic gold is safe, but oxidized gold is toxic. https://en.wikipedia.org/wiki/Gold#Toxicity But it's very difficult to oxidize gold, and even gold the salts try to go back to the metallic form, so most of the times it's not a problem.

[hobs]

Those are not considered heavy metals in toxicology.

[cozzyd]

I guess Iron Maiden should rebrand as Cadmium Maiden

[1970-01-01]

That's their point. Heavy as in "has some gravity to it" is an unambiguous term in all other sciences except toxicology.