Other men turn it into food (9)
I believe the answer is:
nutriment
'food' is the definition.
(nutriment is a kind of food)
'other men turn it' is the wordplay.
'other' is an anagram indicator.
'men'+'turn'+'it'='menturnit'
'menturnit' is an anagram of 'NUTRIMENT'.
'into' is the link.
(Other definitions for nutriment that I've seen before include "diet" , "It sustains" , "Sustenance, nourishment" , "Material providing food" , "Nourishing food" .)