affinity for attracting heavier stuff (i.e. heavy metals) which, in turn, lightens our load
yes, it would be not logical to have a world full of sources of iron naturally and other heavy metals, but no natural way to get rid and eliminate them without modern blood donations procedures.
This metals are not intended to stay there forever, especially iron, with modern medicine only focusing on getting more iron, more this, more that, they forgot more is not always better, and sometimes less is better, and there is no interest in mainstream science to study what's the nature's way of getting rid of too much iron and other metals.
It's only been less than a week of a daily coffee enema practice though, so time will tell.
yes, one week is short term.