And whether there are vampires actually? We have partially answered this question in article of 8 burials of the real vampires. But, let us assume, I am a skeptic and I don't trust in tales about vampires. Whether there is a scientific justification - who such vampires and whether there are they among people. I can tell with confidence you that vampires exist, but it is a little from other point of view... The real gematofag, that is those who eat blood of vertebrate animals occur also among people. But this state is always connected with mental disorders. The most known — Renfild's syndrome, so-called clinical vampirism. Men suffer from him most often. They have uncontrollable desire to suck blood of mammals, including the person. People vampires often appear in medieval legends of Central Europe. It is considered that all these legends are connected with fear of the patients having a rare genetic disease — a porfiriya. Problems with hemoglobin synthesis (red blood cells) at such people break pigmentary exchange in blood and fabrics.