I do agree that lifestyle changes are important. My problem is that I was on antidepressants for a very long time, worked out and ate little. Went off the medication and was able to actually lose. Recently was put back on medication, within 6 months gained 30 lbs. I was still exercising and eating well. So, I have now quit the antidepressants and am able to lose. I believe they change your body chemicals or metabolism. I can only keep weight off if I eat 800 calories a day or less and work out.
Adderall can work for depression, but it's prescribed for that. I have seen a psychiatrist who will prescribe it as a last resort and I am just working with him, a therapist and still eating right and working out. Depression is serious, but when a person knows they are seriously doing right things and gaining despite that and then so many think they just aren't eating right and working out - that is even more depressing.