In the past few years, I have seen many, many people quit smoking and here is what I have observed. I have not seen ANYONE who smoked for say more than 5 years not gain 30-50 pounds. That thing the medical folks tell you about a 5-7 lb. weight gain is BS. It's at least 30. Then within the next 2-3 years, they begin having weight or diet-related illnesses (diabetes, colon, arthritis, whatever) that they never had when they were smoking. This doesn't appear to the be the case with young people who only smoked a short time. I'm not saying anyone should smoke; in fact, better if you don't start by far. Not saying you shouldn't quit either. Just saying that if health is the largest reason you want to quit, you may want to think twice. Just what I've observed in every case.