Husband, perhaps, bad for health! (5,4)
I believe the answer is:
other half
'husband perhaps' is the definition.
'other half' can be an answer for 'husband' (thesaurus). I am unsure of the 'perhaps' bit.
'bad for health' is the wordplay.
'bad' is an anagram indicator.
'for'+'health'='forhealth'
'forhealth' with letters rearranged gives 'OTHER HALF'.
Can you help me to learn more?
(Other definitions for other half that I've seen before include "Spouse" , "people better off than us?" , "Dutch" , "Wife or hubby" , "partner" .)