A 1990 study on centenarians in Okinawa, Japan, found no vegetarians among the centenarians.
"Well, let's look at the data from a 1990 study in Japan. The authors of this study actually came to the conclusion there were no centenarians found among vegetarians. This flies in the face of the idea that this Okinawa blue zone is plant-based." (said at 0:08:51)
No published record matching the claim that a 1990 study on centenarians in Okinawa found no vegetarians was located; this does not prove the claim false. Related epidemiological research on Japanese centenarians, such as Shibata (1992), examined dietary patterns and reported that centenarians consumed a higher proportion of animal protein relative to total protein than average contemporary Japanese, but did not state or conclude that zero vegetarians were found.
- context: Nutrition for the Japanese elderly. (Nutrition and health 1992)
"Nutrient intakes in 94 Japanese centenarians investigated between 1972 and 1973 showed a higher proportion of animal protein to total proteins than in contemporary average Japanese." (abstract, results, passage verified)
pubmedfull study (doi)