If you’re a frequent baker, you probably have your favorite utensils to get the job done. Maybe you’re a big fan of your silicone muffin tins, spatula, or baking mats—after all, they’re non-stick, making cleanup a breeze. Unfortunately, though, research suggests you may need to exercise a bit of caution when it comes to your baking vessels of choice.
A new study published in the Journal of Hazardous Materials raises some red flags about silicone-based bakeware. According to the study, it could release potentially toxic compounds both into your food and the air. Learn more about the research below.
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Study suggests silicone bakeware could be toxic
According to this study, which found 25 different cyclic siloxanes—a family of chemicals used to make silicone flexible and heat-resistant—in the analyzed bakeware, these siloxanes can "migrate into food and are emitted in the air when baking." And that’s a problem, because previous studies have linked certain siloxanes (specifically D4, D5, and D6) to "significant endocrine disruption, reproductive toxicity, and liver toxicity," according to a 2024 study in the National Library of Medicine. Yikes! In short: these aren’t substances you want anywhere near your cookies.
"Use of these products is a source of human exposure to siloxanes," the study says, noting that children, in particular, are at a higher exposure level due to their body weight. That means the risk could be greater for families using silicone bakeware frequently.
The study also notes that more frequent use of the bakeware may lead to lower siloxane releases: "Repeated baking shows a steady decline in migration and emissions, suggesting depletion of siloxanes in the products over time." Still, that’s not exactly reassuring, especially for anyone using new silicone pans straight out of the box.
Until more is known, you're better off sticking to safe alternatives, like stainless steel, glass, or ceramic pans, when possible. After all, no one wants a side of chemical exposure with their brownies.
Stay safe!
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