That is true, but not every factor affecting lifespan is created equal. My point is that violence and traffic deaths are just way, way to small to account for the differences we see here.

There has been a lot of research on this, particularly in the field of public health, and the major reason for the difference is in fact healthcare. Mortality amenable to healthcare, infant mortality, maternal mortality, under-5 etc.

> think we should probably be clear that life expectancy isn’t only tied to healthcare quality or expenses. Car accidents and gun-related homicides, for instance, are major contributors to U.S.’ life expectancy being so low,

Not really.

There was one study showing this to be the case, Ofstedt and Schneider I think, and they got so shredded on the maths that they had to go out and admit that they never intended to get it right!

The maths is not terribly hard, how many 18-year olds need to die to lower the life expectancy of 325 million people by one year? Is that more or less than the US lost through WW2?