Thanks, Georgios, for sharing. Your mother is indeed outstanding. "eating less than average" points to caloric restriction, which has been shown to extend lifespan and health span, at least in lab animals and non-human primates. The effects are largest in short-lived animals, but still significant in primates.

The "invest early on" observation is something I fully subscribe to. Though I realize that some not-so-prudent habits in young adulthood can be compensated for later. In my eyes, 40 is the watershed age to turn everything around.