Have you even watched Cannibal Holocaust? She is not kidding when she says that its "too much"! That movie is the most fucked up shit ever! REAL ANIMALS WERE KILLED, actually killed, ON CAMERA TO MAKE IT!
I second that, it will fuck you up for life. I can stomach gore really well, but I could not sleep after that. But take away the gore, and its kinda lame at some points.
If you like the most powerful rock band ever created, sasquatch, karate, friendship, worshiping Satan (after rocking his ass off) or rocket sauce; Prepare yourself for the D.