Penis length cannot be determined by how big his hands or feet are -- those and other supposed indicators have been widely discredited for years. But a team of South Korean researchers produced what may be a more reliable guide: the ratio of the length of his index finger to that of his ring finger. The lower that ratio, the longer the penis may be, the researchers wrote in the Asian Journal of Andrology. Other research suggested that men with a lower ratio have a more symmetrical face and are more attractive to women, a phenomenon known as the "sexy ratio." And just last year, researchers in Britain reported that a man's risk of developing prostate cancer is related to the ratio of the two digits. Men whose index finger in longer than their ring finger were found to be one-third less likely to develop prostate cancer.
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