Sure, but if you take all the people who will die before 60 because of their weight (what's that, 1/3 of the population in the US?) you can basically add 15-20 years to their lifespans just by having them eat properly. That's the equivalent of adding 5 years to the US's average life expectancy.
No, that can't be right. Do you have sources to those statistics, as they seem way more drastic than I would have thought.
E.g., after looking around online for a bit, I found this[1] which indicates 300,000 deaths each year are attributable to obesity, which is 12.5% of deaths[2].
Furthermore, the magnitude of the the effect doesn't seem to be 15-20 years. This wikipedia section[3] indicates that being "obese" lowers life expectancy by 2-4 years. Being "severely obese" lowers it by 10 years. But according to these statistics[4], "severely obese" is ~10% of the population.
So I think 1/3 of the US population dying before age 60 because of obesity is way, way off the mark. More like 10% dying at 68 and maybe half the population dying at 75 because of obesity rather than 78.
