precautious teen to midwit adult?

No.13631821 ViewReplyOriginalReport
I was never a genius by any means. But when I worked hard, I mastered most of the things that I learned (say Maths, Physics). That was when I was 17.
Over the past 6 years, my intelligence has dwindled significantly. I have trouble retaining information, and learning in general. I'm not sure if this is a psychological block, or if I'm just becoming increasingly retarded. I don't drink or smoke, so my neurons must be fried from the constant flux of information i receive on this site and others. I've practically dropped from being an overachieving teenager (academically) to a mediocre college student, devoid of any passion.
I am unironically close to falling for the therapist meme. How the hell am I supposed to recover from being a full blown retard.