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  1. The life expectancy data quoted by Dr Gregor is not looking at the cohort of age 65 + but everyone. We know that the life expectancy of Okinawans has decreased since the introduction of Western foods. However, if you look at the oldest group who are still eating a mostly traditional diet, their average life expectancy is age 89 for women and 83 for men. If you further refine that to those who we know definitely are eating the traditional diet it is probably in line with the 7th day Adventists. The older cohort of Okinawans (aged 65-plus) is remarkable in many ways. Of particular interest is that they possess among the highest functional capacity and the longest survival in Japan, the country with world’s longest-lived population. Life expectancy at birth for the year 2000 was 86.0 years for Okinawan women and 77.6 years for Okinawan men, respectively. Life expectancy for the septuagenarian cohort (life expectancy at age 65) is the highest in Japan, and possibly the world, at 24.1 years for females and 18.5 years for males, respectively. 40 This compares to 22.5 years and 17.6 years for the same birth cohort in mainland Japan and 19.3 years and 16.2 years http://www.okicent.org/docs/anyas_cr_diet_2007_1114_434s.pdf