Can a small village in China hold the key to living beyond 100?

In Bama County, Guangxi, China living past 100 is the norm. It is becoming so 'the norm' that tourists are beginning to visit this village to seek the answers to longer life spans.
So what does affect our longevity and why are tourists and scientists becoming so interested in this tiny village to find the answers? China is a good case study of a country that is developing a marked ageing population structure as its birth rate continues to decrease and its people are living for longer. 

Watch this interesting National Geographic Video to find out more.