Sometimes it takes my memory several hours to produce something I used to be able to recall instantly.
I have heard that this is because the brain is readjusting to being sober all the time.
My mother watched Hannity everyday and had perfect recall until she died at 94. Ergo, Hannity might be the secret to a perfect memory.;-)
My memory is getting better since I stopped drinking, after initially getting out of sync.
As an aside, I was told that I wasn't an alcoholic because I never had cravings (I don't know if I agree with that). That said, I don't think there is an accurate definition of "alcoholic" (it is itself a somewhat fuzzy term).
As much as I hate the NY times, I do the NY Times crossword puzzle everyday and that keeps my memory sharp.
On the other hand, as we get old, our memory files get larger and larger...takes more time to dig a single detail out of that vast array of old manila folders.;-)
Even now, I am amazed at how powerful the human mind is.