I don't really concern myself with living longer as much as living without major illness and the ability to take care of myself, the ability to dress and feed myself and staying self reliant is very important to me.
I listen to my veterinarian doctor and have reversed all the ailments that they claim you get with age like arthritis, hair loss, white hair, weight, high blood pressure, liver spots [old age spots]. He has even written a book titled immortality. They [veterinarians] have double the life span on dogs but people are getting sick at an early age.