Oh God, yes! I have been taking antidepressants in some form or another for the past 8 years, and I definitely feel like I have gotten stupid. I often have blackouts, where I forget words, or what I wanted to say. I can't think fast anymore. I feel dull and slow-witted. It wasn't always that way. I used to feel like I was clever and fast on my feet, but now I feel like I have gotten a frontal lobotomy or something like that. Sometimes I think I really am losing my mind, like my mental capacities are shrinking day by day. I also noticed that although I didn't feel like offing myself anymore, I didn't feel much of anything else. I couldn't laugh or cry. Right now I am taking a tri-cyclic to help me be able to sleep at night. I don't have the emotional numbness anymore, but I still feel senile and stupid.