Lexapro itself is not mentioned here. However, this article does talk about how SSRI's and pharmaceutical modification may be more ideal than behaviour modification in losing weight. One sentence I found interesting was this, "However, as obesity researchers have pointed out, if obesity is a chronic medical condition in the same way that hypertension is a chronic medical condition, then weight gain following drug discontinuation is no different from rising blood pressure after the discontinuation of antihypertensive medications".