Other ongoing NCI studies are testing green tea as a preventive agent against skin cancer. For example, one is investigating the protective effects of a pill form of green tea against sun-induced skin damage while another explores the topical application of green tea in shrinking precancerous skin changes. For more information about NCI-sponsored studies on green tea, go to http://www.cancer.gov/clinical_trials/.

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(2) Hakim IA, Harris RB. Joint effects of citrus peel use and black tea intake on risk of squamous cell carcinoma of the skin. BMC Derm 2001; 1 (3).
(3) Sun CL, Yuan JM, Lee MJ, Yang CS, Gao YT, Ross RK, Yu MC. Urinary tea polyphenols in relation to gastric and esophageal cancers: a prospective study of men in shanghai, china. Carcin 2002; 23 (9): 1497-1503.
(4) Goldbohm RA, Hertog MG, Brants HA, van Poppel G, van den Brandt PA. Consumption of black tea and cancer risk: a prospective cohort study. JNCI 1996; 88 2): 93-100.
(5) Phase II Study of Green Tea Extract in Patients with Androgen-Independent Metastic Prostate Cancer. Protocol Ids: NCCTG-N9951. NCI Clinical Trials