Green tea has been sipped for centuries in Asia, where it is used to treat anything from headaches and depression to arthritis and cancer. Within the last 20 years, scientific studies have found evidence for some of these claims. Reseachers believe green tea may prevent cancer, although the U.S. government is wary. The U.S. government food and drug regulators believe insufficient evidence exist to prove that green tea prevents cancer.
The Food and Drug Administration says some studies supporting the claim are weak. It concludes that, based on the limited research available, green tea is hightly unlikely to reduce the risk of prostate, breast, or any other type of cancer. According to the American Institute for Cancer Reseach, Japanese Green Tea drinking just a few cups of green tea daily can help prevent tumors.
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