Green Tea Slows Growth of Lung
Cancer and Speeds Cancer Cell Death
Study description: Lung cancer was deliberately
induced in lab animals. Two days later the animals were divided into different
groups and given a green tea solution, a solution containing caffeine, or plain water to
drink for the rest of the study.
The animals in the green tea group were divided into
four subgroups and given either 0.1%, 0.2%, 0.4% or 0.6% green tea solution.
Type of study: Animal
What happened: Of all the groups studied, only the animals
that received the more
highly concentrated green tea solution (0.6%) had fewer tumors, less
angiogenesis (development of new blood vessels needed to support tumor
growth), and increased apoptosis (cancer cell "suicide").
Researchers' conclusion: "Inhibition of
angiogenesis and the induction of apoptosis by green tea may be closely related
to the inhibition of pulmonary carcinogenesis [lung cancer]."
Citation: Liao J, Yang GY, Park ES, et al.
Inhibition of lung carcinogenesis and effects on angiogenesis and apoptosis in
A/J mice by oral administration of green tea. Nutrition and Cancer
2004;48(1):44-53. (Click here to read PubMed study
abstract.)
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