* little smoking among population
* strong social bonds → observed to be beneficial to bodily defence against stress
* high engagement in agriculture and fishing jobs → high physical activity
* possible effects of genetics — high presence of FOXO3 gene
* 10-to-1 carbs-to-protein comsumption ratio, like in other particularly-long-lived populations – linked studies support the conclusion, though too early to judge definitively
* sweet potato, rather than rice, is high-consumption food in the Okinawan diet
* most of the diet is vegetables and fruits; meats and fish are rare
* calorie consumption is, on average, 13% lower than general population
* it is suggested that past the age of 65, protein consumption should increase
* studies suggest that plant-based protein intake have a more positive effect on the human organism than meat- and fished-based
* their diet is not the "elixir of youth", as multiple interacting factors may be in play