...What’s most shocking about these statistics is not how unhealthy they show Americans to be, compared with citizens of countries that spend much less on health care and have much less sophisticated medical technology. What is most perplexing is how stunningly fast the United States has lost ground.

http://www.nytimes.com/2015/04/29/business/economy/income-inequality-is-costing-the-us-on-social-issues.html?ref=business&_r=2