BPA (bisphenol-A) is a packaging material used widely in enclosing food products, through plastic containers and the inner lining of metal cans. Research shows this chemical plastic to be harmful, especially to children, and it has been linked to many potential health hazards.
Avoiding foods that could be contaminated by this chemical is sensible. Avoiding tomatoes canned in tins is paramount. And don’t be fooled by cans that claim to be bisphenol free, they may still contain a form of this toxic product.