Why are women dying?

This article on Mother Jones, juxtaposed with the article in Rabble (CA) I had just read, piqued my interest. Is the female life expectancy going down in correlation with other factors? Initially I thought it might be related to institutional neglect of reservations, though my side-by-side comparison has proved that to be at least on its face inaccurate, with the possible exception of in South Dakota. (What does make for an interesting point, however, is then the either normalization or increase of female life expectancy on the reservations.) Then I compared to a map of the poorest counties in the US. There were a few more alignments here, but it didn’t seem the overall geographic trend could be attributed to either of these factors (inferior healthcare either in poverty-ridden areas or on the reservation or both).

Female Life Expectancy
Reservation Map
Low Income Map