What about Asians? Pretty much all they eat is rice, and they live forever.
There was a Ted talk about longevity that was studying populations of people with extreme ages.
The longest living people's in the world are a small group in Italy and in Japan. They both have average lifespans of 97+, they also have just phenomenally low rates of diseases. There is also a population in the U.S. that has a 90+ lifespan, the 7 day adventists in California.
The common links were.
1.) They work until they die. Everyone in these communities has a job until they croak--if you fish, you fish until you die. If you raise children, the community calls on you even at 90+ to come watch their kids.
2.) Their jobs are contained, and do not produce much stress in their life--this one was hard to quantify but because these people often didn't look to live beyond a comfortable lifestyle, they often never experienced high stress levels from work. Each community for example did NOTHING on their "day of rest" (Communities just shut down)...And when they came home from work, they had allotted times in which the outside world and worries were not discussed. (Essentially after the final meal, all anyone did was relax.)
3.) The older they got, the more important they got. Essentially in each of these communities, as someone got older, they weren't ignored--rather they were elevated to "elder" status. And given high honors. People constantly went seeking their advice or asked them to attend events (Even strangers).
4.) They all have a diet rich in simple grains (Rice, Pasta), fruits, vegetables and fish. Very rarely any other meats. And their portion sizes are actually small--even smaller than what's recommended.
Those were the main commonalities. Was very interesting to watch.