A new study by researchers at the University of Colorado, New York University, and the University of North Carolina at Chapel Hill estimates the number of deaths that can be linked to differences in education, and finds that variation in the risk of death across education levels has widened considerably. The findings, published July 8 in the journal PLOS ONE, suggest that lacking education may be as deadly as being a current rather than former smoker.
I am not sure about the conclusions drawn in this article. I wonder if similar results could be found by improving healthcare for people on low incomes.