The acting life isnt always glamorous.
Sometimes, you have to sacrifice for the part.
Hoults character inRenfieldis an insect-eater.

Nicolas Cage in ‘Renfield’Universal Pictures
Thats something familiar to Cage, who ate a cockroach in his 1988 film,Vampires Kiss.
Ill never do that again, Cage related toYahoo Entertainment.
Im sorry I did it at all.

So he gets a jump on the experience by walking around New York with fake fangs and eating roaches.
The insect-eating part was a bit of improvisation, transformed from a planned swallow of a raw egg.
Unfortunately, the scene required another take.
I ate [roaches] twice because the director did it as a prank, Cage recalls.
InRenfield,Hoult gets off easier.
The bugs his character is required to eat were made from food that humans normally eat.
The cockroaches I got to eat in this were caramel, Hoult said.
Cage may never again eat an insect, but he believes its alright for you.
Insects for thee, but not for me is his motto.
High protein, no fat, excellent nutrients, abundance.
But nope not gonna happen.