In addition to the general health benefits of drinking green tea, the catechins it contains may help individuals live longer. Though the evidence is inconclusive as of yet, some epidemiological studies seem to suggest that regularly drinking large amounts of green tea may prolong human life. In Japan, for instance, a study carried out by the Saitama Cancer Center that evaluated 8,500 participants found that those that consumed more than 3 cups of green tea per day had an average lifespan of 66 years for males and 68 years for females. Those subjects that drank more than 10 cups of green tea each day, however, boasted an average lifespan of 70 years for males and 74 years for females.