According to various sources, vampires are believed to hate or be repelled by the following:
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Garlic: The belief that garlic repels vampires may have originated from the disease porphyria, which can cause sufferers to be sensitive to light and have disfigurement of the skin, including erosion of the lips and gums. People with porphyria also have an intolerance to foods that have a high sulfur content, such as garlic.
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Mirrors: Mirrors were traditionally backed with silver, which was commonly believed to repel evil spirits. Some believed that the healing properties of silver could scare off a vampire. Another reason that suspected vampires may have avoided mirrors is because of the changes to their appearance from diseases commonly confused with vampirism.
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Sunlight: In some vampire lore, sunlight can kill vampires or weaken them. This is why vampires are often depicted as nocturnal creatures.
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Crucifixes and holy water: In Christian mythology, vampires are repelled by religious symbols such as crucifixes and holy water.
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Wooden stakes: In vampire legend, a wooden stake through the heart is one of the ways to kill a vampire.
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Running water: Some vampire lore suggests that vampires cannot cross running water.
Its important to note that these beliefs are based on folklore and mythology, and there is no scientific evidence to support them.