Tannin as a Carcinogen in Bush-Tea: Tea, Mate’, and Khat

  • Julia F. Morton


Field investigations of high-risk areas for esophageal cancer have re­vealed significant correlations between the disease and excessive intake of condensed tannin in bush-tea (plant decoctions taken as cold reme­dies) and have led to increasing awareness of the carcinogenicity of high-tannin foods, beverages, and masticatories taken in quantity frequently and over a long period of time. These include ordinary tea (Camellia sinensis), mate’ (Ilex paraguariensis), and khat (Cacha edulis), the use of which is expanding with cultural migrations and air transport supply.


Esophageal Cancer Chlorogenic Acid Tannin Content Camellia Sinensis Yerba Mate 
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Copyright information

© Plenum Press, New York 1989

Authors and Affiliations

  • Julia F. Morton
    • 1
  1. 1.Morton CollectaneaUniversity of MiamiCoral GablesUSA

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