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In page Porphyria:

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In January 1964, L. Illis's 1963 paper 'On Porphyria and the Aetiology of Werewolves' was published in Proceedings of the Royal Society of Medicine. Later, Nancy Garden argued for a connection between porphyria and the vampire belief in her 1973 book Vampires. In 1985, biochemist David Dolphin's paper for the American Association for the Advancement of Science, 'Porphyria, Vampires, and Werewolves: The Aetiology of European Metamorphosis Legends', gained widespread media coverage, popularizing the idea.[citation needed]