Just like most things, how you use aluminum foil can really affect your health. Ever wonder if that aluminum foil you use to wrap up leftovers or line your pans might actually be bad for you? Well, it’s a bit more nuanced than just a simple yes or no answer. The real concerns depend a lot on how you’re actually using your foil. In some cases, using it to store food or line appliances might introduce unwanted bits of metal into what you’re eating. People worry about aluminum foil because of possible links between consuming too much aluminum over time and conditions like Alzheimer’s disease, plus some other health stuff. But here’s the good news – just having aluminum foil around your kitchen isn’t going to hurt you. Most of the aluminum we consume actually comes from the food itself, like cereals and certain teas, not from storing things in foil or using it as an appliance liner. That said, wrapping certain foods in foil can let some aluminum seep into your meal. The foods you should definitely avoid storing in aluminum foil are acidic ones. Foil tends to break down faster and release more aluminum when it comes in contact with acidic stuff like citrus fruits, tomatoes, and vinegars. These are no-nos for foil storage because the acid can actually eat away at the metal. And the longer you keep these foods wrapped up in foil in your fridge, the more aluminum can end up in your food.
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How to keep aluminum out of your meals without even realizing it
Daisy Daisy/Shutterstock That said, not all scientists agree that the amount of aluminum that leaches out is actually dangerous. Another storage issue pops up when you mix aluminum with other metals that react differently, like stainless steel or silver. One study found that aluminum levels in food shot way up when foil touched food that was sitting on a stainless steel plate. Also, never wrap hot food in aluminum foil – let it cool down first to avoid spreading harmful bacteria.
Now, what about using foil to line your oven or air fryer? For air fryers, it’s totally okay to use foil – just make sure you’re not blocking the airflow that makes them work. But skip the foil when you’re cooking anything acidic for the same reason you shouldn’t store acidic foods in it. Keep in mind that researchers haven’t really studied whether aluminum from air fryers is something to worry about. And with your oven, you should avoid lining it with foil not because of aluminum getting into your food, but because it can mess with how your oven works.
Don’t stress if you’ve already stored acidic foods in foil before. A little bit of aluminum here and there won’t hurt you. According to experts, only about 4% of the aluminum we ingest actually comes from things like aluminum foil. But if you’re doing it repeatedly over time, that could add up. So think about switching to other options for storing acidic or salty foods. Beeswax wraps are a great alternative. Or you could explore other storage solutions that skip the foil entirely and give you peace of mind.
