I Am a Demon Hunter

I'm an Occultist, I research the Occult, myths & legends and what not, but I'm curious. What does "Demon hunter" mean exactly? I'm not bashing on your beliefs or your profession? I guess you could call it. But when I was at the experience project before it shut down,I met a lot of people claiming to be demon hunters, and to me that seems to because of "supernatural" wouldn't you agree? Someone told me that they eat salt each month because of demons trying to possess him/her, not sure if that person understood eating too much salt can kill you and it's one of the reasons I dismissed that the maybe demon hunters out there, it's not the only reason I'm sure you could take a guess why. Like I said not bashing. I want to believe and I just want to know your experience, how do demons look, do you hunt any else than demons, etc.