Toxic Mercury Found in Most US Corn Syrup

Almost half of tested samples of commercial high-fructose corn syrup (HFCS) contained mercury, which was also found in nearly a third of 55 popular brand-name food and beverage products where HFCS is the first- or second-highest labeled ingredient, according to two new U.S. studies.

HFCS has replaced sugar as the sweetener in many beverages and foods such as breads, cereals, breakfast bars, lunch meats, yogurts, soups and condiments. On average, Americans consume about 12 teaspoons per day of HFCS, but teens and other high consumers can take in 80 percent more HFCS than average.

The products include beverages and foods manufactured by Quaker, Hershey's, Kraft, and Smucker's. The highest levels of mercury were detected in dairy beverages like chocolate milk, dressings, and condiments (BBQ sauce), followed by snacks and desserts, including cereal bars.

Mercury is a toxic heavy metal that can lead to organ and heart damage, as well as impair the immune and nervous systems. While high mercury levels have been associated with eating too much of certain kinds of fish, like in Jeremy Piven's case, finding mercury in HFCS is a bit startling for the average consumer. The mercury found in HFCS is a byproduct of the caustic soda used, among other applications, to separate the starch from the corn kernel. While many processing plants that manufacture this industrial soda have altered their methods to eliminate the use of mercury, four plants in the US still employ the old mercury-based technology.

Food processors and the corn syrup industry group attacked the findings as flawed and outdated, but the researchers said it was important for people to know about any potential sources of the toxic metal in their food.