Starry Eyes
Starry Eyes came out in 2014. It's very similar to movies like The Fly and Martyrs in the sense that it is a body horror freak-fest that is both nauseating and interesting at the same time. This movie is about a person who is completely obsessed with becoming famous, and she would do absolutely anything to receive the title of "celebrity."
The Taking of Deborah Logan
There are hundreds of movies about demonic possession that you would never flinch at if you're a horror fanatic. This one, on the other hand, is borderline deathly terrifying. The Taking of Deborah Logan is a mockumentary about a woman who is struggling with Alzheimer's, but it turns out she's just possessed instead.