Vampires are legendary supernatural beings. By drinking the blood of humans or other creatures, you can survive for a long time. ?
The legend of early vampires spread in the Balkans and Slavic regions of Eastern Europe. In these legends, vampires refer to dead bodies that get up from graves and suck human blood.
However, with the constant adaptation of novels, movies and popular culture in the past hundred years, the vampire's image has gradually evolved into a fantasy creature with supernatural power, and it must rely on blood sucking to maintain its vitality.
Extended data:
Scientific explanation of vampires and related historical facts;
Some studies believe that the legendary vampire may be related to rabies because quite a few symptoms are consistent with it: photophobia, aversion to pungent smell, pallor, mouth muscle twitching, biting desire, transmission route and so on. And think that the legend of vampires may be related to the large-scale outbreak in ancient times.
At present, the accepted explanation about vampires is that people who are considered vampires are actually patients with hematoporphyrin disease (hemorhodopsin). Hemoporphyria, also known as rhodopsin, is a metabolic disease caused by abnormal production and excretion of porphyrin, which has many genetic factors.
Congenital erythropoietic porphyria is the accumulation of porphyrin, one of its precursors, due to the lack of heme synthase.
Violet will accumulate in blood and urine, and urine will be red. Because of its strong absorption of light, patients' skin will be sensitive to light, teeth will fluoresce, and anemia will occur.
According to the site of porphyrin metabolism disorder, it can be divided into erythropoietic hematoporphyrin disease and hepatic hematoporphyrin disease. This disease is more common in infants and can also occur in adults. It is called delayed cutaneous hematoporphyrin disease.
Patients with this disease are afraid of light, allergic to garlic and have red eyes. Supplementing hemoglobin is beneficial to relieve the disease. A few extreme patients think that drinking blood can supplement hemoglobin, which leads to the legend of vampires.
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