Canned foods play an important role in food storage. But substances used in making tin cans are strictly controlled to make sure they don't get into the food itself.
Most foods contain very low concentrations of tin. Canned foods may contain higher levels because the tin coating used to protect the steel body of the can from corrosion can slowly transfer into the food.
The resins that are used to coat the insides of some food cans contain the chemical bisphenol-A. This coating allows canned food to be heated to kill off bacteria without the metal in the can getting into the food…