The Village of Long Life

[Nerthus]

Some medical researchers believe that Yuzuri Hara, known as "The Village of Long Life," and its residents may hold the key to anti-aging secrets: the local diet that is unique to the village. Unlike other regions of Japan that grow rice, Yuzuri Hara's hilly terrain is better suited to harvesting different carbohydrates that may prove healthier: things like satsumaimo, a type of sweet potato; satoimo, a sticky white potato; konyaku, a gelatinous root vegetable concoction; and imoji, a potato root.

http://www.appliedhealth.com/ABC_News_HA.html