What does ones post reproductive years mean?

Basically (sorry if this is too "icky/gross/inappropriate"):
1. when a woman gets old she loses all her egg cells, meaning she can't have kids anymore and her period goes away. Her reproductive system is useless now. This also means she has less estrogen, being a bit less "womanly."
2. A man can get old enough to eventually lose his sex drive, meaning he doesn't feel the urge to have sexual intercourse. I am unsure, but this may be the main reason for erectile dysfunction.

source: My school