That is true, and i think society has changed regarding age.. People aren't really even starting to be old till they are past 60, whereas a few years ago 50 was considered old....
In my opinion you are only as old as you feel!! (that's not really good for me though cos on this diet i feel about 80---in bed by 10, can't eat solid food, weeing continuously!! lol)
You are lucky to have a sister, especially one that you are so close to x x x