According to the explanation of relevant medical experts, when cooking food, aluminum does not react chemically with oil, salt and other seasonings in food, and the surface of aluminum foil paper reacts with air to generate alumina, which is harmless to human body and belongs to a stable substance, so cooking food with aluminum foil is harmless. But if you barbecue food with aluminum foil, try not to react with acidic or alkaline substances, such as vinegar. Because they can react with aluminum to form aluminum salts, which are absorbed by the human body.
When cooking with aluminum foil, it is recommended to choose a slightly thicker one, which is too thin and fragile. If you accidentally eat it with food, it will chemically react with gastric acid in the body, and then the aluminum salt will be directly absorbed by the body. So for the sake of health, pay attention to choose thicker aluminum foil paper!