If you are a Sanguinarian you won't want to miss my new novel, Nymphomania Bloodlust, that will be published this month and available on Amazon.com, including Kindle. According to By Light Unseen, "Sanguinarians describe themselves as human beings with a compulsion, or need, to consume blood for reasons other than erotic or emotional satisfaction." In other words, it's a physical thing and they also react negatively to it being spiritual.
Sanguinarians can be so addictive as to view themselves in an alter-ego, unable to keep anti-social impulses in check, and actually have to work hard to prevent believing themselves to be the "Beast." These people "...are not merely blood fetishists, because they do report this physical need to drink blood."
There are a few sites available for Sanguinarians--I was surprised by the limited amount of 7,320--but most of them I viewed appear to be sincere in their approach. These folks feel they have been given a backseat by the "explosive" growth of Psivamp (or Psychic vampires), and Otherkin (or people who identify as partially or entirely non-human). But those are another story for later.