*but some of it is more subtle over a longer period of time. That's at least how I understand it, anyway*
Exactly so Jerica...
Contrary to some peeps beliefs whom regularly stick in there bit on this forum, the body is not a fixed entity...
The best description of an u'man I ever, ever heard was from Sir Jonathan Wolfe Miller, he trained as a physician in the late 1950s by coincidence when I was born...

It went something like this...
"If you stand several hundred yards away from an ornamental fountain dong its thing it can look rigid i.e. a fixed entity shape"
Though if you walk right up to it close - its actually a lot of water droplets dancing in harmonic energy...
Its exactly the same with your body...its a mass of dancing molecules & cells... which is why until you die it will continually change and modify....
If you introduce any drug HRT or otherwise it has the potential to alter the sequence...
How much though is a variable too...
(simples)