The following sources were consulted in the preparation of the article “15 foods once marketed as medicine.”
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Beef tea historical overview (Royal College of Physicians blog):
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Staub, P. O., Casu, L., & Leonti, M. (2016). Back to the roots: A quantitative survey of herbal drugs in Dioscorides’ De Materia Medica. Journal of Ethnopharmacology, 178, 18–32.
