What societal issues do you face in America that we dont face in Canada which reduces your overall life expectancy, that is not related to health care?
That's a little bit of a loaded question. Obviously Every health problem is related to health care. But the preponderance of our mortality and morbidity is in the usual areas you might expect...
Obesity, smoking, hypertension, drug use, homicide.
Averages hide the above.
While white males have much more access to helath care, black females outlive them.
Of course 100% coverage for basic healthcare would address the 10% of Americans dying of these items uninsured. It's not clear that being insured or not changes all of this of course. But it would surely increase life for that group.
For the remainder that could go to the doctor regular...they don't. And they live lifestyles in which Healthcare is counseling and attempting to save them in spite of their bad lifestyles.
Large public education campaigns and public policies that address the causes of obesity , instead of addressing the healthcare problems that come from it, would be more effective.