Can lead leach from glazed ceramic mugs into hot acidic drinks?
caution
Short answer
Yes, some glazed ceramic drinkware can leach lead.
This does not mean every ceramic mug is a problem. It means cracked, damaged, decorative, imported, handmade, or unlabeled glazed drinkware deserves extra caution.
Why this matters
Lead should not be part of daily food or drink contact. Hot coffee, tea, and lemon drinks are repeated habits, so a risky mug can become a repeated exposure.
Heat and acidity can make the glaze question more important.
What the research says
A 2018 Journal of Medical Toxicology case report described lead exposure from a store-bought ceramic mug used for hot lemon water during pregnancy. The authors noted that heat and acidity helped break down the leaded glaze.
A 2026 Journal of Public Health Management and Practice study found acidic foods cooked in glazed pottery had 9x more soluble lead than nonacidic foods cooked in similar pottery.
What to do instead
Avoid cracked, decorative, unlabeled, or damaged ceramic mugs for daily hot drinks.
Use glass cups, stainless steel, or clearly lead-tested drinkware for coffee and tea.
The research at a glance
| Study | Journal | Year |
|---|---|---|
| Unintentional and Sequential Lead Exposure from a Ceramic Mug and Maca (Lepidium meyenii). | J Med Toxicol | 2018 |
| Enhanced Leaching of Soluble Lead by Cooking Acidic Food in Glazed Pottery Sold at the Mexico-US Border. | J Public Health Manag Pract | 2026 |
What to use instead
Glass coffee cups avoid the ceramic glaze question for daily hot drinks.
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