Can green tea prevent or cure cancer? Yes, it does. Penn State University study revealed that drinking green tea can kill oral cancer cells.
Green tea, which is popular in China and Japan, contains polyphenol compound such as catechin which is a powerful antioxidant that can fight cancer. Green tea EGCG, with its free radical scavenging function can protect cells from DNA damage by getting rid of reactive oxygen species. Green tea catechins specifically prevent angiogenesis as well as invasion of tumor cells. Polyphenols also protect us from effects of ultraviolet radiation while modulating immune system function.
Epigallocatechin gallate or EGCG in green tea
EGCG or epigallocatechin gallate is an active biological agent of green tea benefit which transforms the metabolism of pancreatic cancer cells by affecting the expression of LDHA or lactate dehydrogenase A which is an important enzyme in cancer metabolism. The intake of green tea can also lower chances of developing cancer in digestive system of women. A form of EGCG can be applied intravenously and directly to a tumor and reduces the tumor by two thirds at first before the tumor totally disappears just within one month while having no side effects normal tissues.
Research studies on green tea and cancer benefits
Green tea extract in capsules were integrated in human transferrin-carrying vesicles by researchers at the University of Strathclyde and Glasgow. Receptors for transferrin have been found in significant amounts in some cancers. The research was very encouraging because it showed how green tea extract decreased the size of the tumors every day and in some cases totally eliminated the tumor. However, other ways of feeding the green tea extract was unsuccessful.
Another research discovered that men with prostate cancer who took green tea were found to have mild prostate tissue inflammation as compared to those who did not drink green tea. The study was conducted by Professor Susanne M. Henning at UCLA. In the experiment, the delivery of green tea polyphenols into the prostate tissue was ensured, eventually reducing inflammation of the prostate. The experiment required all 79 men with prostate cancer to drink brewed green tea or water every day for three to eight weeks based on when they are scheduled for surgery. On 67 men who drank green tea, levels of prostate specific antigen or PSA were lower. The level of the nuclear factor kappa which was an indicator of inflammation was also reduced in those who drank green tea.