You might be interested to read this analysis from the FT www.ft.com/content/6d8b...

How disadvantage became deadly in America

The poorest in the US suffer early deaths in a way that their other developed world counterparts do not

Even the most disadvantaged in Japan & Switzerland typically make it to 60. In France, Germany & Britain, they die at about 55. In the US, it’s just 41. For men at the bottom of the US economic ladder, the avg age of death is just 36 yrs old, compared with 55 in the Netherlands and 57 in Sweden