Oh, from her comments section a couple about the recent decline in their longevity. As she points out its interesting that they do not account or even look at increased gluten/wheat and carbs or the replacement of lard with vegetable oils as fat.
Declining longevity advantage and l... [Asia Pac J Public Health. 2008] - PubMed - NCBI
Longevity and diet in Okinawa, Japa... [Asia Pac J Public Health. 2003] - PubMed - NCBI
I would definitely not define or look to Okinawan current diet for future longevity.