Young and middle-aged Okinawans are among the most enthusiastic consumers of junk and processed food in Japan. American fast food and a sugar-rich diet have burdened islanders — who once lived staggeringly long lives — with the highest body-mass index rates in the country. Middle-aged men, in particular, now suffer from inordinately high rates of heart-related diseases and obesity. The longevity of Okinawa's elders stands in stark contrast to the health issues of younger islanders. However, there is resistance to this trend, and it's coming from Okinawan chef Kiyoko Yamashiro in a little town called Kin.