A study published online recently in the journal Environmental Health Perspectives documented slightly elevated levels of arsenic in samples of chicken purchased at grocery stores in 10 cities in the U.S.
So how did trace amounts of this toxin end up in supermarket poultry?
Consumer groups are stepping up pressure on animal producers and their practice of giving antibiotics to healthy animals to prevent disease. In two new reports, the groups say they're worried that the preventive use of antibiotics is contributing to the development of antibiotic-resistant bacteria, which get harder to treat in humans and animals over time.
Liyan Chen, a grad student in New York, was chatting online recently with her cousin in China.
"He said, 'I want Abbott milk powder,' " Chen told me. " 'I want you to buy it and ship it back.' "
Her cousin wanted her to buy three boxes of Abbott baby formula, sold under the brand name Similac, and ship it to him in China. She did some research and found out the shipping alone could cost $80. "They're not from a very well-off family, and that really surprised me," she said — especially because they can buy Abbott baby formula in stores in China.