Based on research studies cited there, the typical US American stitching from a SAD diet to a whole foods plant-based diet would live about ten years longer, and additionally have a much healthier and happier twenty years or so at the end with much lower likelihood of chronic illness or dementia.
For example: https://bluezones.com/exploration/loma-linda-california/
"Today, a community of about 9,000 Adventists in the Loma Linda area are the core of America’s Blue Zone region. They live as much as a decade longer than the rest of us, and much of their longevity can be attributed to vegetarianism and regular exercise. ... Adventists tend to spend time with lots of other Adventists. They find well-being by sharing each other’s values and supporting each other’s habits."
But even as good diet is essential, it is aspects of community and infrastructure that help people keep eating healthy together. Likewise, community and infrastructure can help promote daily exercise. So, ultimately, for most people, longevity is not an individual thing. It is a community thing.
Based on research studies cited there, the typical US American stitching from a SAD diet to a whole foods plant-based diet would live about ten years longer, and additionally have a much healthier and happier twenty years or so at the end with much lower likelihood of chronic illness or dementia.
See also: https://bluezones.com/live-longer-better/
For example: https://bluezones.com/exploration/loma-linda-california/ "Today, a community of about 9,000 Adventists in the Loma Linda area are the core of America’s Blue Zone region. They live as much as a decade longer than the rest of us, and much of their longevity can be attributed to vegetarianism and regular exercise. ... Adventists tend to spend time with lots of other Adventists. They find well-being by sharing each other’s values and supporting each other’s habits."
But even as good diet is essential, it is aspects of community and infrastructure that help people keep eating healthy together. Likewise, community and infrastructure can help promote daily exercise. So, ultimately, for most people, longevity is not an individual thing. It is a community thing.
That point on community is also made in the sequel to "Fat, Sick and Nearly Dead": https://en.wikipedia.org/wiki/Fat,_Sick_and_Nearly_Dead and is even made by Dean Ornish in the trailer: http://www.fatsickandnearlydead2.com/