I haven't read a book that I didn't have to read for my studies in about four years, and I used to read a lot too. I have problems with conversations now because I can't focus and I'm really just plain dumber than I used to be. Some of it could be meds. I will often say things that make no sense and realize it after I've said it, this never happened to me before (I think it's called mental cloudiness).

I would think it's pretty normal to have these kinds of symptoms, but you seem to have them more than me.