Is lead leaching from glazed ceramic cookware into food?

What's actually in it

Glazed ceramic cookware often contains lead in the glaze used to create a smooth, shiny finish. When you cook with these items, the lead doesn't just stay in the glaze. It can move directly into your food.

This process is faster and more dangerous when you cook acidic foods like tomatoes, citrus, or vinegar-based sauces. The acid acts like a solvent, pulling the lead out of the ceramic coating and into your meal. Once it is in your food, you ingest it.

What the research says

A 2026 study in J Public Health Manag Pract found that cooking acidic food in glazed pottery sold at the Mexico-US border leads to the release of soluble lead. This means the lead is easily absorbed by your body once consumed.

According to a 2026 study in J Appl Toxicol, even prolonged low-dose exposure to heavy metals like lead causes toxicity. This peer-reviewed research highlights that these metals disrupt your body at a molecular level, impacting your health through food chain contamination. Because lead builds up in the body over time, there is no safe level of exposure.