Title: Causes and consequences of the wide—and growing—gap between rich and poor
Source: Harvard Magazine
Date: July/August 2008 edition

From the article:

Disparities in health tend to fall along income lines everywhere: the poor generally get sicker and die sooner than the rich. But in the United States, the gap between the rich and the poor is far wider than in most other developed democracies, and it is getting wider. That is true both before and after taxes: the United States also does less than most other rich democracies to redistribute income from the rich to the poor.