Chemical exposures vary with social disparities.

Chemical exposures vary with social disparities.
http://www.environmentalhealthnews.org/ehs/newscience/2012/03/2012-0313-chemical-exposures-vary-with-social-disparities/

"Socioeconomic status and dependence upon food assistance are striking predictors of the levels of bisphenol A and four perfluorinated compounds (PFCs) found in urine samples gathered during a large U.S. survey. The wealthy had higher levels of PFCs than those who were poorer. Conversely, low income and use of food assistance programs predicted higher levels of bisphenol A."