Is it safe to use ceramic-coated cookware if it contains metal-based pigments that might leach into food?
No. Peer-reviewed research shows that glazed cookware can leach heavy metals like lead directly into your food, especially when cooking acidic ingredients.
What's actually in it
Many ceramic-coated pans and glazed pots use metal-based pigments and glazes to achieve their color and finish. These coatings are not always stable. When you cook with these items, the surface can break down and release heavy metals into your meals.
The risk is highest when you cook acidic foods like tomato sauce, citrus, or vinegar-based dishes. These ingredients can speed up the process of leaching, pulling metals out of the glaze and into your food.
What the research says
A 2026 study in J Public Health Manag Pract found that cooking acidic food in glazed pottery leads to the leaching of soluble lead. This peer-reviewed research confirms that the chemical bond between the glaze and the metal pigments is not permanent. Once these metals leach into your food, they enter your body during your meal.
The research at a glance
| Study | Journal | Year |
|---|---|---|
| Enhanced Leaching of Soluble Lead by Cooking Acidic Food in Glazed Pottery Sold at the Mexico-US Border. | J Public Health Manag Pract | 2026 |
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