Evidence for Green Tea as a cancer prevention method continues to grow, though scientists are not yet ready to officially endorse it for that purpose. The results of a study published in Cancer Prevention Research suggests a reduction in oral cancer.
Green tea extract, taken orally among 41 patients, found 58.8% of patients at the highest doses showed a clinical response. Only 18.2% of patients taking a placebo showed a similar reponse.The study also found an improvement in several biomarkers, which might be important in charting potential cancer development.
The study lasted 27.5 months, during which time 15 patients developed oral cancer. There was no difference between the test and control groups in terms of oral cancer development. However, patients dosed with green tea extract and displayed mild to moderate dysplasia developed cancer after a longer time period than those who were not dosed with green tea.
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Evidence for Green Tea as a cancer prevention method continues to grow, though scientists are not yet ready to officially endorse it for that purpose. The results of a study published in Cancer Prevention Research suggests a reduction in oral cancer. 
