Artist gets disease -- it must be something eaten (6)
I believe the answer is:
ragout
'something eaten' is the definition.
'artist gets disease' is the wordplay.
'artist' becomes 'ra' (Royal Academician, member of Royal Academy of Arts).
'gets' is a charade indicator (letters next to each other).
'disease' becomes 'gout' (gout is a kind of disease**).
'ra'+'gout'='RAGOUT'
'it must be' is the link.
(Other definitions for ragout that I've seen before include "Seasoned dish of stewed meat and vegetables" , "Stewed meat/veg dish" , "food ..." , "Seasoned stew of meat and vegetables" , "something spicy?" .)