Hello I believe I can help you with your question
It is true that the SSRI antidepressants are linked to possible weight gain in about 25 percent of users. Lexapro typically has a lesser incidence rate of weight gain, but it is still possible.
Some antidepressants actually do cause some individuals to increase their appetite so that is what increases your weight, but when you describe a loss of appetite but still weight gain can occur than this is typically because the antidepressant has had an impact on the body's metabolism. Most researchers have speculation on the cause of the weight gain, but we are not entirely sure.
If you are concerned about the possible weight gain with Lexapro, but still want the benefits of an antidepressant, then you can try Venlafaxine (Effexor) which is known to not cause weight gain and is an effective antidepressant. Or you can try Bupropion (Wellbutrin) which can be an effective antidepressant and actually promotes weight loss.
Do you have any questions or concerns?
Oh! So I won't necessarily gain weight?