Hunger (intrinsic property)

From Wikihack

The property hunger increases the rate at which you burn nutrition by 50%. If you acquired it by wearing a ring of hunger, it is an extrinsic; if you acquire it by eating a ring of hunger, it is an intrinsic. Extrinsic hunger is occasionally useful when you want to eat a corpse before it spoils, for one benefit or another, but are satiated and thus might choke.