In my experience, quitting cigarettes came with many positive side effects. (few negatives) Weight gain was a side effect that seamed to be negative at first, but has proven to be a positive after 18 months smoke free. Initially I gained some weight but after my body cleansed itself of many toxins, I started to lose the weight I had gained. My stamina increased and I had more motivation to exercise. And best of all, FRUIT TASTES AMAZING. Overall I am so very grateful for e-cigs. If you experience some weight gain, give it some time. The benefits greatly outweigh (get it) the detriments to your health. Does anyone else have an experience with weight gain/loss after quitting cigs?