Earlier quoted context omitted.
Because America has some of the best healthcare outcomes in the world https://en.wikipedia.org/wiki/List_of_countries_by_quality_o...
https://en.wikipedia.org/wiki/List_of_countries_by_life_expe... 35th
As an example, due to Europe's propensity for biking and walking relative to the US, that certainly has a positive effect on life expectancy.
Another example would be the high caloric diets of many Americans. This exists for historical reasons (see: the history of fried chicken and its relationship to the South) and for economic reasons (those in poverty disproportionately consume cheap and high-calorie diets).
Neither of these are related to the quality or availability of health coverage, but instead, are infrastructure / sociological issues.