the diet of Japanese centenarians

119 is the number of candles blown out by the decan of humanity, the Japanese Kane Tanaka, Sunday 2 January: the lady was in fact born in 1903. She is certainly an exception, but many of her countrymen all from the Japanese island of Okinawa seem to defy time and years. The secret of so much longevity? It would seem to derive from a diet, the Okinawan diet, with great nutritional virtues. What are the real benefits of this regimen?