What kind of memory problems, could you expand? I wonder if I fall on this bucket. I had graying hairs as soon as I finished high school (~19). One of my major problems with studying was an inability to retain stuff in university, which is weird because through middle school a single read was sufficient for me to retain stuff.

Mostly noun recall. I can mentally picture and describe thing or person X, but when I'm having the problem it could possibly take me 30 minutes to figure out the name of X without looking it up.