|original poster image from Wikipedia|
Fascination is a 1979 French horror movie about women who begin drinking ox blood as a doctor-recommended therapy for anemia and who graduate to human blood and orgies from there. A type of vampire film, this one is slow getting started but more interesting the further into it you get. There's much nudity, just so you know.
You can watch a trailer with English subtitles at Youtube.
Jean Rollin’s films are a strange mixture of artiness and horror. His earlier films in particular are works of artily surreal effect, although his later work becomes much more traditional in matters such as plot. Rollin has also delved into the erotic/pornographic genre ... almost as much as he has horror. Frequently, horror and erotica blend into one in Rollin’s work. Fascination is one such caseHorrorNews.net opens its review with, "This film is a beautiful piece of genius sexploitation as only director Jean Rollin can deliver," "There is a something very Edgar Allen Poe about “Fascination.” By Poe I mean “The System of Doctor Tarr and Professor Fether," discusses the issues of power between the sexes in the film, and concludes, "The film intrigues you with its strangeness and keeps you interested by presenting you the possibility of one story line and then it takes its clothes off and teases you in a totally different direction."