A recent study revealed that "cereals bars, energy shots and even infant formula s made with organic brown rice syrup contain particularly high levels of arsenic, compared with products without this syrup. Some cereal bars have concentrations of arsenic that are 12 times the U.S. Environmental Protection Agency's (EPA) safe drinking water limit of 10 parts per billion (ppb), the researchers said. The majority of arsenic the researchers found was inorganic, which is generally thought to be more harmful than organic arsenic. Chronic exposure to low levels of inorganic arsenic has been linked to increased risks of bladder, lung and skin cancer, as well as Type 2 diabetes and cardiovascular disease, according to the EPA. It's not yet clear whether the arsenic in rice, rice-based products or other foods is harmful to people. But the levels found in infant formulas are concerning, because of infants' small body size, said study researcher Brian Jackson, of the department of Earth sciences at Dartmouth College in Hanover, NH.