I actually have had alot of experience with older people. I happen to work in a field where I experience them every day. I do understand what you are saying about older people stating this when they are sick. My point is that my grandmother did NOT say this to me when she was sick. She said it to me a long time before she became sick.
I'm just trying to make a point that she lived to an age that alot of people do not reach even though she did not eat the way you say she should have eaten. I have a hard time believing that most people could live to be 140 without any health problems if they eat the way you say to. I have a really hard time believing that they would be out there running with the 30 year olds just because of their diet. Old age is just that....Old age. No matter what they eat, time will certainly wear you down. No matter what you eat.