However, the aluminum typically leaves your body quickly through urination and defecation. “The risk from cooking with aluminum foil is low, with only about 4% of our aluminum intake coming from ...

According to the USDA website, foil in the United States is comprised of "98.5% aluminum with the balance primarily from iron and silicon to give strength and puncture resistance".

Studies suggest that cooking with foil, can lead to greater health risks. ." While cooking your food in aluminum pots or pans isn’t a bad thing, placing it in foil and putting it in the oven is ...

Avoid cooking acidic foods in foil, as these ingredients significantly increase aluminum transfer. Keep cooking times short and temperatures moderate, staying below 400°F when possible.