Kyoto: Japan's favorite beverage might be offering more than just a relaxing tea break. According to new research, green tea could prevent a deadly condition in the body's main artery. A Kyoto University team has found that abdominal aortic aneurysm -- a condition in which the main artery becomes overstretched and bloated -- developed less frequently in rats that drank green tea polyphenol, a major component of green tea.