Based on 2 threads I've seen this week, if you had the choice, would you date a smoker or a fattie?
I think I'd go with a smoker. Either one is going to have their health issues, but I can always ask a smoker to smoke outside so my stuff doesn't stink as much. A fat person is always fat, and sometimes just as smelly. They are both addicted to things that are bad for them, so the mental illness aspect exists for both.
As requested...units of measure:
Smoker: At least a pack a day smoker.
Fattie: 200lbs.+
[edit]Adjusted the weight again, 250 is way too large apparently.