Everything is indeed bad for our health.
I can't think of any living thing that won't feast on us (veg/vagans just let plants predigest things for them).
None of the mineral world is safe. Even pure air is toxic over the long term. Water can kill you, etc.
(
Tahkcalb ω∞ for sigs,
Tue 15 Sep 2009, 3:39,
archived)