Only plus side to the cancer sticks was that I was 30 - 40 llbs lighter as a regular smoker.
That happened to me, too. My doctor said it was because quitting smoking changed my metabolism. But I think it was simpler: When I smoked a pipe, it kept me occupied. Putting the pipe stem in my mouth was an alternative to putting food in my mouth; cleaning and filling the pipe was an alterative to searching refrigerator and cupboards.