Debate is turning into disorder (8)
I believe the answer is:
diabetes
'disorder' is the definition.
(diabetes is a kind of disorder)
'debate is turning' is the wordplay.
'turning' indicates an anagram.
'debate'+'is'='debateis'
'debateis' anagrammed gives 'DIABETES'.
'into' acts as a link.
(Other definitions for diabetes that I've seen before include "Disease -- a side bet (anag)" , "Disorder linked to insulin" , "Insulin-linked disorder" , "Is debate about disease needing insulin?" , "Sugar-related disorder" .)