You said it yourself, Sardinian's are getting 30%+ of their calories from high quality animal foods, which are drastically higher in vitamins than the animal foods Americans are eating.

70% of Americans calories in 2010 were from plant based foods: https://www.ers.usda.gov/amber-waves/2016/december/a-look-at-calorie-sources-in-the-american-diet/

So its very clear that the types of foods we are consuming are a problem, not the specific amount of animal or plant foods.

The study on the Okinawan is not representative of their diet throughout their lives. the studie was done just a couple of years after the second world war ended. before which they had a massive population of pigs but due to the war it was decimated. so they where forced to a lower animal produce diet because of the war.

Currently the most long lived population is hong kong.

http://roguehealthandfitness.com/meat-saturated-fat-and-long-life/

Hong Kong consumes more meat per person – both calorically and in weight – than any other nation. At 695 grams per day, people in Hong Kong eat 60% more meat than the next-highest meat eaters in New Zealand.

дебаты про диету будут еще долго видимо....... даже не знаю кому верить..... ну мясо дешманское походу лучше не есть это точно