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Green tea helps stall prostate cancer Men looking for another healthy reason to drink green tea may look no further. A new study suggests that an antioxidant found in green tea may prevent prostate cancer growth by halting the spread of cancer cells and starving the tumor. A previous study in mice suggested that polyphenols found in green tea can stop the development of prostate cancer and its growth, and researchers say this study helps explain the mechanism behind that potential health benefit. Researchers say the green tea polyphenols appear to fight prostate cancer by targeting the mechanisms that trigger the spread of cancer cells as well as stopping the growth of neighboring blood vessels that feed the tumor. The results of the study appear in the Dec. 1 issue of Cancer Research. The study is the latest of many that suggest that drinking green tea provides a variety of health benefits ranging from reducing heart disease risk to fighting cancer. In the study, researchers looked at the role of the antioxidants found in green tea in prostate cancer development and progression in mice. A previous study had shown that giving the mice the human equivalent of six cups of green tea per day stopped the growth of prostate cancer. Researchers examined how the green tea antioxidant affected a protein known as insulin-like growth factor-1 (IGF-1). Increased levels of IGF-1 have been found in men with prostate cancer. They found that mice that received the green tea antioxidant had lower levels of IGF-1 in their blood. "These observations bear significance in light of studies that indicate increased levels of IGF-1 are associated with increased risk of several cancers, such as prostate, breast, lung and colon," said researcher Hasan Mukhtar, PhD, of the department of dermatology at the University of Wisconsin. Researchers say the green tea antioxidant appeared to stall cell growth by decreasing production of several proteins that promote cell survival. In addition, it reduced the production of proteins that are known to be associated with the spread of cancer cells. Finally, the study also suggests that the antioxidant in green tea appeared to starve prostate cancer tumor cells by inhibiting the formation of blood vessels, thereby suppressing the flow of nutrients to the cancerous cells. Dr. Cinque's comments: There has been much good news about green tea lately, and no bad news. The polyphenol in green tea known as Epigallocatechin gallate is said to be 25 to 100 times more potent than Vitamins C or E at protecting DNA, inhibiting undesirable cell colonies, and preserving cellular membranes and arterial walls. Green tea has even been found to have a thermogenic effect to spur weight loss. Unfortunately, I have never learned to enjoy the taste of green tea, as hard as I've tried. Consequently, I have started taking two tiny capsules daily of VRP's Green Tea Extract. They have removed all of the caffeine from the tea except for 1 mg per capsule, which is negligible. If you're interested, here is the link: Green Tea Extract. However, if you enjoy drinking green tea, that is certainly a cheaper and better way to go. You should either buy decaffinated green tea, or decaffinate it yourself by steeping it twice and throwing out the first steeping, which contains most of the caffeine. E-mail to a friend Previous Article Next Article |
