Neil Irwin and Quoctrung Bui in the New York Times:
The poor in some cities — big ones like New York and Los Angeles, and also quite a few smaller ones like Birmingham, Ala. — live nearly as long as their middle-class neighbors or have seen rising life expectancy in the 21st century. But in some other parts of the country, adults with the lowest incomes die on average as young as people in much poorer nations like Rwanda, and their life spans are getting shorter.
In those differences, documented in sweeping new research, lies an optimistic message: The right mix of steps to improve habits and public health could help people live longer, regardless of how much money they make.
One conclusion from this work, published on Monday in The Journal of the American Medical Association, is that the gap in life spans between rich and poor widened from 2001 to 2014. The top 1 percent in income among American men live 15 years longer than the poorest 1 percent; for women, the gap is 10 years. These rich Americans have gained three years of longevity just in this century. They live longer almost without regard to where they live. Poor Americans had very little gain as a whole, with big differences among different places.
More here.