Consumer Reports. Tests of canned foods, including soups, juice, tuna, and green beans, have found that almost all of the 19 name-brand foods tested contain measurable levels of Bisphenol A (BPA).
BPA is bad. It's in the soup can liners. And it's been linked to "a wide array of health effects including reproductive abnormalities, heightened risk of breast and prostate cancers, diabetes, and heart disease."
Federal guidelines currently put the daily upper limit of safe exposure at 50 micrograms of BPA per kilogram of body weight. But that's based on old studies... More here.
My take? There should be ZERO TOLERANCE for BPA in foodstuffs big food sells us. Don't we have enough exposure to toxins in our environment? Why would we allow anything more than ZERO BPA in soup can liners? Think of your kid slurping up BPA.
Of course you should buy fresh. And stuff in glass containers. But still...