Ring hunger
All rings and amulets (except chargeable rings that are at +0 charge, and the meat ring) cause one additional nutrition point to be deducted once every twenty turns. This is additive -- a player wearing two rings and an amulet will lose three additional hunger points every twenty turns. This sense of "ring hunger" is separate from the hunger-causing effects of the ring of regeneration, ring of conflict, and the ring of hunger, all of which cause a nutrition point to be lost every other turn. The ring of slow digestion prevents ordinary nutrition consumption, but still causes ring hunger (if it didn't, it would be a ring of no digestion.)
For a full list of hunger causes and amounts, see also nutrition and foodless.
Dylan O'Donnell and Kevin Hugo have a 3.4.3 spoiler that more or less remains current for NetHack 3.6.1: food spoiler.
This page may need to be updated for the current version of NetHack.
It may contain text specific to NetHack 3.6.1. Information on this page may be out of date.
Editors: After reviewing this page and making necessary edits, please change the {{nethack-361}} tag to the current version's tag or {{noversion}} as appropriate.