Green tea health benefits
As I mentioned earlier, the reported benefits of green tea are multitudinous…and well studied. For example, green tea inhibits tumor growth in a variety of cancers, including: breast, lung, and prostate cancers. Specifically, the EGCG in green tea works to suppress angiogenesis, the growth of blood vessels that tumors need to survive. And if that's not enough -- stopping the growth of cancer at the front end -- green tea polyphenols have been shown to inhibit metastasis, the spread of cancer at the back end. And finally, EGCG is the first known natural telomerase inhibitor. That is to say, it eliminates the "immortality" of cancer cells which is their trademark and which makes them so deadly. The bottom line is that green tea is particularly effective in destroying the causes of leukemia, prostate cancer, breast cancer, and seems to provide the best protection known in terms of preventing lung cancer. And green tea seems to be able to almost totally prevent cancer causing DNA damage in smokers -- a possible explanation as to why the Japanese, who are among the world's heaviest smokers, have such a low incidence of lung cancer.
And the benefits of green tea don't stop there. It has also been shown to be effective in regulating blood sugar, reducing cholesterol and triglycerides, and in reversing the ravages of heart disease. (Incidentally, the Japanese, who drink large amounts of green tea, have some of the lowest rates of cardiovascular disease in the world.)
And finally, green tea has great benefits for the brain as well. It serves as an effective MAO inhibitor. It also protects against brain-cell death from glucose oxidase, over-production of nitric oxide, and it lowers the amount of free iron reaching the brain (a bad thing). The net result is that there are strong indications that green tea extract may play a major role in protecting against both Parkinson's and Alzheimer's disease.