Check out this posting from CBS News
Especially note what happened when the reporter ate a sandwich made from tuna in a can that had Bisphenol A (BPA). Also, note the doctors comment on the same and the danger related to.
The underlying concern here is that if you want to avoid diseases like cancer, you will have to both try to avoid toxic chemicals and improve your bodies ability to detoxify its self.
Taking steps to boost your intracellular glutathione will help.
Good health to you.