I have stopped my weight gain by drastically changing my eating habits and lifting
light weights while doing aerobic type exercises, but I still haven't lost the weight
I had already put on.
Now that I have been exercising regularly for a couple of months and trying to eat light snacks 7 or 8 times a day, I am not craving sweets or carbs the way I was before. For me, it seems more important to build some muscle in the arms, shoulders, abdomen and legs, than to spend hours a day walking.