When FDA researcher Renee Dufault found residual mercury in high fructose corn syrup in 2004, the FDA ordered her to stop investigating. Mercury is used to make lye -- and lye is used to make the corn syrup that constitutes one in every ten calories that Americans eat.

Melinda Wenner reports for Mother Jones in the July/August 2009 issue.

Source: Mother Jones, 08/07/2009