If you can drop 100+ lbs by smoking half a pack a day, I guarantee you'll be a lot healthier overall. Not saying you actually _would_ lose all that weight, but

If you can drop 100+ lbs by smoking half a pack a day, I guarantee you'll be a lot healthier overall. Not saying you actually _would_ lose all that weight, but it's not like it's a binary between "smoking" and "not smoking". Frequency and amount matters, but the it's pretty much impossible to approach the subject in our society with any sort of objectivity or science.