is forgetting things part of maturing?
Don't glam it up by calling it maturing. Aging is the slow decomposition of the body as it edges ever closer to the day it finally fails. "laughter lines", the skin gets wrinkly as the skin starts to weaken and thin. Just like your bone density decreases causing breaks when you have a fall whereas when you were young, you would have just got up and carried on. Eye sight fails as the eye balls decrease in size, joins turn to powder, teeth fall out, bits drop off
In case you were wondering, I am not enjoying the aging process.

all of the above

but nothing has dropped off yet