Even when canned foods claim to be free of bisphenol-A (BPA), they can still contain the chemical. BPA is found in polycarbonate plastics-such as water bottles and baby bottles-and in the epoxy resins that line metal food cans, where they have been found to leach into food. Consumer Reports tested 19 common canned foods for a 2009 article and almost all of them contained BPA-even those labeled "BPA-free" and "organic." The results showed that, for instance, Vital Choice's tuna in BPA-free cans contained an average of 20 parts per billion (ppb).
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