Drag Me to Hell is a 2013 supernatural horror film directed by Sam Raimi, the director of the Spider-Man trilogy of
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Drag Me to Hell

superhero films from the early 2000s and the Evil Dead trilogy of films back in the '80s and '90s.

Drag Me to Hell Is NOT Supernatural--It Is An Anthology Of An Eating Disorder

The central character in Sam Raimi's Drag Me to Hell, Christine, is shown in a photograph as an overweight child
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next to a sign reading Pork Queen Fair. She also mentiones her mother's addiction, indicating that she is determined not to follow the same path, or suffer the same fate, as her mother did. Her encounters with demons are hallucinations brought on by lack of nutrition and her declining mental health. This may seem a bit of a stretch, but the demon only attacks her in the kitchen of her own home. At night she dreams that she's being
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Unless this is normal behavior with her grandmother...

vomited onto, when it's really Christine herself who's throwing up in her own bathroom. The sequence where she dreams that a fly enters her mouth and flies into her stomach is actually just her stomach growling while she is asleep. Her body needs food but she is unwilling to give in. The old woman represents her condition--she has no teeth, is hideous, and eats/steals the candy from her desk. During the funeral everyone is eating, drinking and gambling. The woman vomits on her and then shoves her arm down her throat as if taunting her to "eat, eat!"  The one moment she's "forced" to eat something in the film, she finds an eye staring back at her inside the cake, causing her to choke up her food.