Doomed to have poor health? (3-5)
I believe the answer is:
ill-fated
'doomed' is the definition.
(I've seen this before)
'poor health?' is the wordplay.
'poor' becomes 'ill' (I've seen this in another clue).
'health?' becomes 'fated' (I can't justify this - if you can you should believe this answer much more).
'ill'+'fated'='ILL-FATED'
'to have' is the link.
Can you help me to learn more?
(Other definitions for ill-fated that I've seen before include "Destined to fail" , "'Doomed, unlucky (3-5)'" , "Doomed(3.5)" , "Destined for bad luck" , "Yelp like pig" .)