the real secret to longevity is recreating the conditions are bodies function best at and upholding those conditions. because our environment is so radically different from the past, this requires a lot of discipline, pondering, and paying attention most of all.
our bodies evolved for a certain environment, and recreating that environment would do us good. (i believe that careful people lived long lives pre-industry.)
some of these conditions are regular exercise, occasional starvation, following environmental queues, supporting a healthy biome, and avoiding stress.
our approaches to health today are comical in their attempt to simplify and reduce a billion-year-old continuously-evolving system down to one or two simple concepts while ignoring all the harm we do to it at the same time.
to use a car analogy, it's sort of like throwing away your automobile's maintenance manual and saying, "i heard the key to car longevity is changing the oil often", and filling up the engine with olive oil.
