You don't want to breathe a bunch of iron/rust dust, but that doesn't happen with iron cookware since it's never a dry-abrading situation. I once rented an old

You don't want to breathe a bunch of iron/rust dust, but that doesn't happen with iron cookware since it's never a dry-abrading situation. I once rented an old house with some old iron pipes... While it was a problem for doing laundry without turning clothes orange, when I investigated the health risks it wasn't a problem unless you consumed huge enough amounts to get iron poisoning. Iron is an essential nutrient after all...