I've thought about this. The younger generation is much fatter at 20 than older generations were, so I'd argue that in 10-20 years, the death rates of obeasts will skyrocket. Most studies on obesity and death have been in middle aged people who, for the most part, did not have an overweight/obese childhood, and didn't "let themselves go" until after having children. Obeasts these days don't have the chances of living that long because they haven't been a healthy weight as long as the older generation.