i would think so- I know it is an odd thing to bring up-- I don't think you are a freak by the way, it is just out of the norm if you know what I mean. But it could be missing iron or something in your diet. a craving like that for the body that the body needs, could be "seen as addiction" in some sort.

That is unless you think you are a vampire- then idk what to go on with that-- those theories seem to be debatable as a whole.