On Jun 9, 7:59�pm, "Paul M. Cook"
> I once knew a rabid vegan that was so incredibly dogmatic and reactionary
> she utterly refused to take any calcium supplements because at one point in
> the calcium molecules billion year history it was part of an animal's bone
> or a sea creature's shell. �

So doesn't she realize that the atoms in her body were once part of
another animal's body? Even if she eats only plants and her mom ate
only plants while she was pregnant with her there's no way of knowing
whether or not a plant is carrying an atom or molecule from some
animal that could have died hundreds, thousands, or millions of years
ago.