There is ample evidence that you are likely to have a longer than average life span if you have grandparents & parents who had long life spans.
I have an 87 year old male friend who looks 45-50 & is very healthy. His younger sister died a few years ago, making me wonder if longevity genetics are sex linked.
I have an 87 year old male friend who looks 45-50 & is very healthy. His younger sister died a few years ago, making me wonder if longevity genetics are sex linked.