That depends upon the canning technologySometimes chemicals can leak into food from a damaged/opened canOtherwise there should be no problemIt's more dangerous to eat from one because the the seamThere are other considerationsOne man ate a canned chicken that he purchased when he married 50 years earlier with no ill effectsThat's not advised.
If the can is not coated white on the inside, some people believe aluminum will leech into the contents, presenting an increased risk of Alzheimer's.
dependsis it open or not? there are food and juices in can that needs to be served coldif this is the case, i guess it's okay to have them chilledbut it's advisable to transfer them in other container such as glass or food grade plastic containersbut if you do not have any containers available the moment you open the cani guess, it's just alright to have them refrigerated in their original containers for a day.
If the can is open, you should pour the remaining contents into a tupperware or some containerI heard the same thing about aluminum containers.
