I was on Lexapro for about 15 months.. I eat healthy and exercise but I've gained about 10-15 lbs over the last year.. Maybe it's an age thing but I think it was due to Lexapro.. So I called Dr. to see if I can get off of it-- she said yes very slowly so I'm taking half of pill.. Meanwhile she wants me to come in for a blood test so they can see what's going on.. The question is-- Can they tell if Lexapro is causing the weight gain or if it's simply the age factor??? Thanks--- And they will also check thyroid but my thyroid is always fine.