I think this is a very good movie for the right age group. R rated language like the "f" word and lesser foul words, and voilence everywhere, monsters getting shot, a child and a female cop being horribly burned, and nightmarish violence, such as a big pyramid headed monster picking up a woman, ripping her skin off, and throwing it at a door. Also, a grim scene with a dead body over a toilet stall, tied with barbed wire, which proceeds to come to life, crawling around and moaning. Dark environment, and a sad ending, can make this a very depressing movie too. However, little to nothing in sexual content, though you don't really notice amidst all the monsters and gore. Their is one scene which is meant to be frightening, with zombie nurses that only move in light, trying to kill the heroine. However, I thought they looked more like something out of the "Thriller" music video, so it just made me laugh, despite some throat slahing and blood in that scene. Overall, this is an excellent movie,with a great and disturbing story,but only for people who are mature enough to see it.