Do antidepressants cause weight gain?

Antidepressants have been associated with weight gain however a new study refutes that idea.

Yet according to a study published a few days ago in the online issue of JAMA Psychiatry, this should not have happened. Using electronic medical records to gather information on weight change among more than 19,000 patients on antidepressants, Dr. Roy Perlis and colleagues of the this hospital in Boston found only minimal changes in weight. Using electronic medical records to gather information on weight change among more than 19,000 patients on antidepressants, Dr. Roy Perlis and colleagues of the this hospital in Boston found only minimal changes in weight. ..... Conclusion: The researchers said that patients should not be scared of taking antidepressants because they think they will gain weight. [1]
Weight was gained among those who had depression, but according to the author, only among those who had what she described as atypical depression, a depression characterized by increased appetite.

The majority of my 50 pound weight gain started 4 years ago after I stopped taking Wellbutrin. Ten of the 50 pound weight gain could be due to taking Risperdone in the last year. I doubt the author's speculation about an increase in appetite. My calorie intake was about the same over that four year period since I am rather rigid/consistent when it comes to eating. The fact that the weight gain could be related to atypical depression could be supported in my case however I didn't gain much weight while on Wellbutrin. Atypical depressives can also gain weight independent of calorie intake.