I've been learning about what chemical compounds make food healthy, such as the catechins in green tea. But it's only good to think about health up to a point, since a car could run into me and necrotize all the cells in my legs, and no chemical element would fix that.
It's weird to think that every single atom that makes up me came from somewhere else on the Earth and that my body has just gathered them all up for the moment. And some days from now, those atoms will all be changed out for new ones.
This event reminds me of a case in Russia, when a man brought his wife to hospital and was made to wait as the staff expected a bribe. The wife died, the man went home, took a gun, shot down each one of the staff that refused to treat his wife, and killed himself.