Maybe so, but I don't necessarily accept your premise. If you're healthy til you die why does it have to happen? Fate/Longevity is not set in stone, it is self-created.
Perhaps death can be achieved beyond the reasons of physical degeneration? Those that lived hundreds of years in Biblical times probably chose death at some point (if you believe in that history).
"Menopause" is a man-made condition and term in my opinion. It is accepted as the norm, therefore you think it is "natural". However is in fact not "natural," but rather an unfortunate deviation from nature (aka premature aging).