health (n.) Look up health at Dictionary.com
Old English hælþ "wholeness, a being whole, sound or well," from Proto-Germanic *hailitho, from PIE *kailo- "whole, uninjured, of good omen" (cf. Old English hal "hale, whole;" Old Norse heill "healthy;" Old English halig, Old Norse helge "holy, sacred;" Old English hælan "to heal"). Of physical health in Middle English, but also "prosperity, happiness, welfare; preservation, safety."