Does green tea prevent cancer?

I don’t really want to talk about health benefits of green tea on my blog. But I saw an interesting TV program and I could not ignore it.

Kakekawa-shi in Sizuoka prefecture has the lowest death rate from cancer in Japan. Also their healthcare costs of elderly citizens are 20% lower than the national average. It is an amazing figure. There is something in common between the 7 cities nominated in the top 15 on the ranking for the low cancer-death-rate. They are production regions of green tea! But Kyoto and Yame which are regions for high-quality tea are not included. The nominated cities produce regular quality tea which is consumed daily. The daily tea has a lot of catechin, which might have something to do with the health benefits.

The effect for cancer prevention of green tea is not sure yet. There are studies that show effective results but there are also some that say it's non-effective. Anyhow, it is a fact that Kakekawa-shi, where a lot of green tea is drank has the lowest cancer death rate in Japan.