q1w2e3 saidObesity is just one reason. If we didn't have more technology to deal with the complications of obesity that would be the end of the rise in medical inflation. But science doesn't rest...
And there's tobacco (which remains the number 1 killer in the US) and cancer (no. 2).
And why would Republicans, whose mantra is "No one may be required to do anything He or She does not want to do. Ever" want to agree to fight obesity?
Obesity is one of the biggest reason and one of the main reasons that even if the US were to get a universal health system like Canada or elsewhere, the costs would not be remotely similar.
Because the US government subsidizes obesity through HFCS and the corn industry. It's not that Republicans believe that no one should be required to do what they do not want to do (where a liberal might subsidize whatever you want to do and you don't have responsibility for your own actions), Republicans or rather more appropriately libertarians believe that people should take responsibility for their actions and costs, and that governments should not be in the business of protecting people from themselves.
Perhaps the most remarkable thing about your throwaway comment is how it ignores the rapidly changing science of nutrition - which has made its way into food guidelines. Things that the US government thought was good for you isn't so much anymore, and vice versa. Perhaps you cannot be trusted to take responsibility for what you eat but why do you suppose others can't?