Good health gives comfort (6)
I believe the answer is:
cheers
This clue is a double definition.
'good health' is the first definition.
(both can be used as a drinks toast)
'gives comfort' is the second definition.
(Other definitions for cheers that I've seen before include "Ta - ta-ta" , "Skoal! Thanks! Goodbye!" , "A colloquial toast - hooray!" , "Shouts of praise" , "A hearty toast" .)